Research Article |
Corresponding author: Ming Kai Tan ( orthoptera.mingkai@gmail.com ) Academic editor: Klaus-Gerhard Heller
© 2022 Ming Kai Tan, Tony Robillard.
This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Citation:
Tan MK, Robillard T (2022) Rugabinthus, a new genus of Lebinthina (Orthoptera, Gryllidae, Eneopterinae) from New Guinea. Journal of Orthoptera Research 31(1): 9-40. https://doi.org/10.3897/jor.31.73800
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Brachypterous crickets from the monophyletic group of Lebinthina were traditionally grouped under the genus Lebinthus. However, the morphology and calling song are highly diversified, prompting the erection of numerous genera to reclassify the species. Based on the strong characteristic fold carrying the diagonal vein of the male forewing, a new genus of cricket from the subtribe Lebinthina is described: Rugabinthus gen. nov. This brachypterous genus is endemic to the island of New Guinea and nearby islands. We redescribe the type species Rugabinthus leopoldi (Chopard, 1931) comb. nov. and describe 12 new species, R. manokwari sp. nov., R. kencana sp. nov., R. maoke sp. nov., R. nabire sp. nov., R. albatros sp. nov., R. karimui sp. nov., R. yayukae sp. nov., R. biakis sp. nov., R. mamberamo sp. nov., R. tariku sp. nov., R. faowi sp. nov., and R. baduri sp. nov. We also transferred R. newguineae (Bhowmik, 1981) comb. nov. and provide a key to all known species of Rugabinthus gen. nov.
Grylloidea, Lebinthini, new species, Papua, Southeast Asia, taxonomy
The tribe Lebinthini Robillard, 2004 is comprised of a highly speciose clade of crickets with diverse morphologies, ranging from the tiny brachypterous Pixibinthus Robillard & Anso, 2016 to the large and fully winged species of the genus Cardiodactylus Saussure, 1878. Male lebinthines produce high-frequency calls (10–28 kHz), and their call structure can also be highly diverse, ranging from a few chirps to a combination of a series of chirps followed by a trill (e.g.,
Among the Lebinthini, the subtribe Lebinthina is distributed in the hyper-diverse yet poorly studied Southeast Asia and the western Pacific. This clade includes many taxa that are still being discovered. In particular, two genera of Lebinthina were described from Southeast Asia, Fadinthus Robillard & Tan, 2021, and Falcerminthus Robillard & Tan, 2021 (see
Continued efforts to sample the region where Lebinthina is distributed and discover new species with diverse morphologies have led to recent insights about how species are related and should be classified. Traditionally, Lebinthus included most brachypterous species of Lebinthini. However, as new information about these species became available, their classification has been more accurately revised (
Pursuing the taxonomic revision of the species described from New Guinea, we found that Lebinthus leopoldi Chopard, 1931 (Fig.
Materials.—Specimens in MNHN were studied in addition to materials loaned from BPBM, MZB, NHMUK, RBINS, RMNH, and ZIN (see abbreviations below).
Morphology.—Male tegminal veins and cells follow the terminology of
Close-up images of habitus and morphological features were obtained using a Canon EOS 6D digital SLR camera with a macro photo lens MP-E 65 mm f/2.8 USM (1–5×). Imaging stacking was done using Helicon Remote version 9.3.1. W and Helicon Focus 6.8.0. Photographs of male and female genitalia were done with a binocular microscope Leica MZ16 with an AMScope Microscope Eyepiece Camera (MU1000, 10 MP Aptina Colour, CMO50) attached via an AmScope FMA050 fixed microscope adaptor and the software ToupView. Image editing was accomplished using CombineZP version 1.0 and Adobe Photoshop CC2014. To highlight the structural components of genitalia, a water solution containing a drop of JBL Punktol was used. To fix orientations and stabilization of geni talia for photography, a clear and viscous hand sanitizer was used following
Abbreviations.—
Depositories:
BPBM Bernice Pauahi Bishop Museum, Hawaii, U.S.A.;
MNHN Muséum national d'Histoire naturelle, Paris, France;
MZB Museum Zoologicum Bogoriense, Bogor, Java, Indonesia;
NHMUK Natural History Museum, London, U.K.;
RBINS Royal Belgian Institute of Natural Sciences, Brussels, Belgium;
RMNH Nationaal Natuurhistorisch Museum (formerly Rijksmuseum van Natuurlijke Historie), Leiden, The Netherlands;
ZIN Zoological Institute, Russian Academy of Sciences, St. Petersburg, Russia.
General morphology:
I, II, III front, median, hind, respectively (femora, legs, tibiae);
F femora;
FW forewing;
TaIII-1 basal segment of hind leg tarsomere;
T tibiae.
Tegminal venation:
1A–4A first to fourth anal veins;
CuA anterior cubital vein;
CuA1, CuA2, … first, second, … bifurcations of CuA;
CuP posterior cubital vein;
M median vein;
Sc subcostal vein;
R radial vein;
c1–3 first to third cells of C alignment;
d1 cell (mirror) first cell(s) of D alignment;
d2 second cell of D alignment;
e1 first cell of E alignment;
ha harp area.
Measurements:
FIIIL length of hind femora;
FIIIW width of hind femora;
FWL forewing length;
FWW forewing width (at the level of maximal width);
OL ovipositor length;
PronL pronotum length;
PronW pronotum width;
TIIIL length of hind tibiae.
Family Gryllidae Laicharting, 1781
Subfamily Eneopterinae Saussure, 1874
Tribe Lebinthini Robillard, 2004
Subtribe Lebinthina Robillard & Tan, 2021
Lebinthus leopoldi Chopard, 1931
Genus named after the Latin word “Ruga” for wrinkle or fold, referring to the characteristic fold on the male FW carrying the diagonal vein.
Island of New Guinea: Indonesia (West Papua) and Papua New Guinea (Fig.
Among the Lebinthina genera, Rugabinthus species are average to large sized and stocky with a dark brown coloration. General shape close to that of Macrobinthus, also from New Guinea, from which it differs by male FWs with a narrow triangular harp (shield shaped in Macrobinthus) occupying half of FW width, with a characteristic and strong diagonal fold carrying the diagonal vein and cell c1, and separating FWs in two distinct areas; file vein area also characterized by a strong bean-shaped sclerotization; harp with a strong transverse oblique vein, bi- or poly-furcated anteriorly; venation posterior to diagonal fold usually faint and reticulated, longitudinal veins only strong at apex. Eyes prominent and large as in Macrobinthus compared to Agnotecous and Centuriarus; face as high as wide (higher than wide in Macrobinthus), close to that of Lebinthus. Microptery in both sexes, FWs not reaching mid-length of abdomen. Mirror not differentiated (slightly differentiated in Macrobinthus). CuA almost straight (clearly curved inwards in Macrobinthus). Male genitalia with pseudepiphallus usually elongate, its posterior apex highly variable in size and shape, rami short; pseudepiphallic parameres made of two main lobes variable in shape and orientation; endophallic sclerite very long, trifid posteriorly. Female: FWs shorter than in males, very slightly overlapping, generally rounded posteriorly. Ovipositor rather long, its apex slightly denticulate on dorsal edge. Female copulatory papilla usually rounded, with a C-shaped basal sclerite; apex rounded, generally folded ventrally.
Size variable, medium to large for the subtribe. Dorsum of head rounded, prolonged by trapezoidal fastigium almost as long as wide (Fig.
Male. Metanotal glands absent. Dorsal field of FWs not distinctly longer than lateral field. FWs longer than wide, longer than pronotum dorsal disk. FW venation (Figs
Male genitalia: (Figs
Female. FWs very short, shorter than in male, reaching or slightly surpassing posterior margin of first tergite, close together and usually slightly overlapping at their bases. Dorsal field usually oblique posteriorly (more so in some species than others); dorsal field and lateral field with more or less distinct longitudinal veins (Fig.
Female genitalia: Ovipositor most often slightly longer than FIII, slightly denticulate on dorsal edge, its apex acute. Female copulatory papilla rounded, almost entirely membranous, sometimes with a basal sclerotized ring; apex rounded, generally folded ventrally (Fig.
Unknown.
The rare information obtained from photographs from iNaturalist suggest that these crickets are found in the leaf litter and in the foliage of low-lying vegetation in forest (Fig.
(14 in total; ordered by similarity)
R. leopoldi (Chopard, 1931) comb. nov.
R. mamberamo sp. nov.
R. yayukae sp. nov.
R. faowi sp. nov.
R. kencana sp. nov.
R. manokwari sp. nov.
R. maoke sp. nov.
R. biakis sp. nov.
R. nabire sp. nov.
R. tariku sp. nov.
R. albatros sp. nov.
R. baduri sp. nov.
R. karimui sp. nov.
R. newguineae (Bhowmik, 1981) comb. nov.
A. Map of New Guinea island showing the distribution of Rugabinthus species; B. Female Rugabinthus species in their natural habitats in Acemo, South Manokwari (https://www.inaturalist.org/observations/73044465) and C. Malagufuk (https://www.inaturalist.org/observations/72638321). Photo credit: Benoît Segerer.
Lebinthus leopoldi
Chopard, 1931: 7; 1968: 354;
Holotype: INDONESIA • ♂; West Papua, Manoi [Sorong Manoi]; 2 March 1929; Prince Leopold leg.; RBINS. Allotype: INDONESIA • ♀; same information as holotype; RBINS. Paratypes: INDONESIA • 3♂, 4♀; same information as holotype; RBINS • 1♂; West Papua, Manoi [Sorong Manoi]; 2 March 1929; Prince Leopold leg.; MNHN-EO-ENSIF1441 • 1♀; same information as holotype; molecular sample L173; MNHN-EO-ENSIF1443 • 1♀; same information as holotype; MNHN-EO-ENSIF1442.
INDONESIA: West Papua: Manoi
This species differs from all congeners by male genitalia with pseudepiphallus more rectangular, very elongate, its posterior part curved posteriorly, its apex truncated with small paired apical lophi; lophi triangular with obtuse apex.
Average size among congeners (Fig.
Male. FW reaching apex of third tergite; apex rounded. FW coloration (Fig.
Male genitalia: (Figs
Female. FW reaching base of third tergite, with basal area with a cream-colored oblong spot without clearly defined margin, forming two indistinct spots near base and apex; lateral field dark brown (Fig.
Female genitalia: Ovipositor about as long as FIII. Copulatory papilla very small, rounded, apex folded ventrally, short, pointed; dorsal face with a sclerotized area; ventro-anterior end base forming an oval ring (Fig.
See Table
Holotype: INDONESIA • ♂; West Papua, Fawi [Faowi] village in upper part of Tariku River (tributary of Mamberamo River), partly low-lying forest and partly forest on hills; 29 January–17 February 2012; A. Gorochov leg.; molecular sample L94; ZIN. Paratype: INDONESIA • 1♀; same information as holotype; MNHN-EO-ENSIF1758.
INDONESIA: West Papua: Faowi
This species is named after Mamberamo River; noun in apposition. The name is derived from the main river rather than the tributary Tariku River because it has more elongated and larger male genitalia compared to the sympatric species R. tariku sp. nov.
This new species differs from all congeners by male genitalia, with pseudepiphallus very slender and very elongate, close to that of R. leopoldi from which it differs by posterior apex forming a long flat spoon slightly curved dorsally near apex, looking like a simpler version of R. leopoldi, with thinner pre-apical expansions, apex somewhat truncated, without lophi; pseudepiphallic parameres stout, weakly curved, apex strongly sclerotized and rounded. From the sympatric species R. tariku sp. nov., the new species differs by larger size and by male and female genitalia.
Average sized among congeners (Fig.
Male. FWs reaching middle of third abdominal tergite. FW coloration (Fig.
Male genitalia: (Figs
Female. FWs slightly surpassing second tergite. Dorsal field with a cream-colored oval spot at base without clearly defined margin (Fig.
Female genitalia: Ovipositor distinctly shorter than FIII. Copulatory papilla globular, its basal part with an irregular sclerotization forming a basal rim, with a large, rounded apex, mostly membranous and curved ventrally (Fig.
See Table
Holotype: INDONESIA • ♂; Mountain slope above Bernhard Camp, 750 m; 19 March 1939; L. J. Toxopeus leg.; MZB-ORTH10791. Paratypes: INDONESIA • 1♂; Mountain slope above Bernhard Camp, 100 m; 8? April 1939; L. J. Toxopeus leg.; molecular sample L178; MZB-ORHT9414 • 1♂; Araucaria Camp 800 m; 3 March 1939; L. J. Toxopeus leg. (MZB-ORHT 9417); molecular sample L212; MNHN-EO-ENSIF1728 • 1♂; N. Guinea, Bor?, ca. 400 m?; 8 April 1911; Dr P. N. Kampen Ned N.W Guinea Exp. leg.; RMNH.
INDONESIA: West Papua, Bernhard Camp.
The species is dedicated to Prof. Yayuk R. Suhardjono from the Zoological Museum, Cibinong Science Centre in Jakarta-Bogor (Indonesia).
This new species differs from all congeners by male genitalia, with characteristic shape of pseudepiphallus, its apical part tapering into a subacute apex and pseudepiphallic parameres including a median inner process and a triangular apex. The new species is close to R. faowi sp. nov. by general shape of male genitalia and shape of endophallic sclerite but differs by apex of pseudepiphallus and pseudepiphallic parameres.
Average to large sized among congeners (Fig.
Male. FWs reaching middle of fourth abdominal tergite. FW coloration (Fig.
Male genitalia: (Figs
Female. Unknown.
See Table
Holotype: INDONESIA • ♂; West Papua, Fawi [Faowi] village in upper part of Tariku River (tributary of Mamberamo River), partly low-lying forest and partly forest on hills; 29 January–17 February 2012; A. Gorochov leg.; molecular sample L92; ZIN. Paratypes: INDONESIA • 1♀; same information as holotype; ZIN • 4♂, 6♀; same information as holotype; ZIN • 1♂, 1♀; same information as holotype; MZB • 1♂, 1♀; same information as holotype; MNHN-EO-ENSIF11144–ENSIF11145.
INDONESIA: West Papua: Faowi.
This species is named after the type locality Faowi; noun in apposition. Even though three species of Rugabinthus are found in Faowi, this species was the most abundantly collected.
This new species is close to R. manokwari sp. nov., R. kencana sp. nov., and R. maoke sp. nov. in terms of male FW venation with 1A not indented, and by male genitalia with pseudepiphallus triangular. This new species differs from R. manokwari sp. nov. by larger size, darker coloration, apex of pseudepiphallus not indented, and slight difference in shape of pseudepiphallic parameres. This new species differs from R. kencana sp. nov. and R. maoke sp. nov. by lateral margins of pseudepiphallus more indented in the middle and shape of pseudepiphallic parameres.
Large sized among congeners (Fig.
Male. FWs reaching middle of fourth abdominal tergite. FW coloration (Fig.
Male genitalia: (Figs
Female. FW slightly surpassing second tergite, with a small cream-colored rounded spot at base and one fainter at apex (Fig.
Female genitalia: Ovipositor distinctly longer than FIII. Copulatory papilla globular, its base with a semi-complete ring-like sclerotization; apex folded ventrally, short and rounded, slightly sclerotized on apical face (Fig.
See Table
Holotype: INDONESIA • ♂; West Papua, Timika (Irian Jaya Freeport Concession Timika); lowland forest, Kuala Kencana nr. sewage plant; 4°26.21'S, 136°51.84'W, 100 m; 17–24 March 1997; S. Miller, Peggie, Yaku, Ubaidillah leg.; molecular sample L46; MZB-ORHT97020. Paratypes: INDONESIA • 1♀; West Papua, Timika (Irian Jaya Freeport Concession Timika); lowland rainforest, Kuala Kencana Light Ind. Park 4°26.21'S 136°52.59'W, 100 m, Malaise trap 1 (site 5); (MZB 97024); MNHN-EO-ENSIF3552 • 1♂; West Papua, Freeport MT2 plot #5; 12–25 March 1997; molecular sample L11LFRE1; (MZBORTH97025-5); MNHN-EO-ENSIF1760.
INDONESIA: West Papua: Kuala Kencana.
The species is named after the type locality: Kuala Kencana; noun in apposition.
This new species differs from all congeners by its large size, the large triangular shape of male pseudepiphalllus, and stout pseudepiphallic parameres, gently curved but not bent in middle, apex swollen and bilobate. The new species is very similar to R. maoke sp. nov. but differs by overall smaller size, male FW venation with two cell alignments in apical field (instead of one in R. maoke sp. nov.), shape of oblique vein, and male genitalia with distinctly smaller pseudepiphallus and endophallic sclerite shorter anteriorly (forming a Y-shape in R. maoke sp. nov.), with lateral arms pointing more posteriorly. The male genitalia are also similar to R. manokwari sp. nov. but differ by the absence of indentation at base of the apical third of lateral margin and shape of pseudepiphallic parameres.
Large sized among congeners (Fig.
Male. FWs reaching apex of fourth abdominal tergite. FW coloration (Fig.
Male genitalia: (Figs
Female. FW faintly surpassing apex of third tergite, homogeneously brown, without a basal spot (Fig.
Female genitalia: Ovipositor slightly longer than FIII. Copulatory papilla very small, somewhat rectangular, its basal part with sclerotization forming a basal rim, apex almost as wide as base, ended by a narrow stout and truncated lobule (Fig.
See Table
Holotype: INDONESIA • ♂; West Papua, Manokwari, Vogelkop, 75 m; 24 July 1957; D. Elmo Hardy leg.; BPBM. Paratype: INDONESIA • 1♀; West Papua, Manokwari town, primary forest on hills near sea; 4–6 November 2004; A. Gorochov leg.; molecular sample L88; ZIN.
INDONESIA: West Papua: Manokwari
The species is named after the type locality Manokwari; noun in apposition.
This new species differs from all congeners by lighter coloration, including pronotal disk yellow brown with sparse red brown patterns, and shape of male genitalia. Among species group, R. manokwari sp. nov. differs by male genitalia with pseudepiphallus indented dorsally at base of apical region and tapering to a narrower apex. This species has similar pale coloration as R. biakis sp. nov. but differs by absence of longitudinal median stripe in the pronotal disk and by shape of male genitalia.
Size average for the genus (Fig.
Male. FW reaching base of fourth abdominal tergite. FW coloration (Fig.
Male genitalia: (Figs
Female. FW reaching middle of second tergite, with an apical indistinct cream-colored spot (Fig.
Female genitalia: Ovipositor shorter than FIII. Copulatory papilla conical, smaller and stout; apex folded ventrally, short, pointed; dorsal face with a sclerotized area; ventro-anterior end forming an oval to pyriform rim (Fig.
See Table
Holotype: INDONESIA • ♂; West Papua, Star Range; 25 m; 10 September 1959; Neth. New Guinea Exped 1959 leg.; RMNH. Paratype: INDONESIA • 1♂; West Papua, Star Range; 25 m; 10 September 1959; Neth. New Guinea Exped 1959 leg.; molecular sample L179; MNHN-EO-ENSIF1757.
INDONESIA: West Papua: Star Range
This species is named after the Maoke Mountain Range where Star Range was situated within; noun in apposition.
This new species is very similar to R. kencana but differs by overall larger size, distinctly larger pseudepiphallus, and endophallic sclerite with lateral arms more elongated and pointing more externally.
Large sized among congeners (Fig.
Male. FWs reaching base of fourth abdominal tergite. FW coloration (Fig.
Male genitalia: (Figs
Female. Unknown.
See Table
Holotype: INDONESIA • ♂; West Papua, Biak Island (not far from N. coast of W New Guinea), secondary forest on hill near vill. Corem; 14–15 November 2004; A. Gorochov leg.; ZIN. Paratypes: INDONESIA • 1♂; same information as holotype; molecular sample L86; MZB • 1♂; Biak Island (not far from N. coast of W New Guinea), secondary forest on hill near vill. Corem; 14–15 November 2004; A. Gorochov leg.; MNHN-EO-ENSIF1745.
INDONESIA • 1 juvenile; West Papua, Biak Island, Biak Town, forest on not high hill near airport; 17–20 January 2012; leg. A. Gorochov; molecular sample L85; ZIN.
INDONESIA: West Papua: Biak.
The species is named after the type locality: Biak Island.
This new species differs from all congeners by its small size; dorsum of head yellow brown with five well-separated and well-defined dark brown longitudinal bands; pronotal disk yellow brown with a median dark brown longitudinal band and sparse but well defined dark brown spots of different sizes; lateral lobe contrasting dark in coloration. It also differs from all congeners by male genitalia with pseudepiphallus rectangular, stouter than congeners, apex truncated forming a short posterior plate with a small median nodule.
Small sized among congeners (Fig.
Male. FWs reaching middle of fourth abdominal tergite. FW coloration (Fig.
Male genitalia: (Figs
Female. Unknown.
See Table
Holotype: INDONESIA • ♂; West Papua, Nabire, S. Geelvink Bay, 5–50 m; 25 August–2 September 1962; J. Sedlacek leg.; BPBM. Paratypes: INDONESIA • 1♀; West Papua, Nabire, S. Geelvink Bay, 0–30 m; 2–9 September 1962; J. L. Gressitt leg.; BPBM • 1♂; West Papua, Nabire, S. Geelvink Bay, 10–40 m; 13 October 1962; N. Wilson leg.; molecular sample L162; BPBM • 1♂; West Papua, Nabire, S. Geelvink Bay; 16 September 1962; Malaise trap, in jungle; H. Holtmann leg.; MNHN-EO-ENSIF11332 • 1♂; West Papua, Nabire, S. Geelvink Bay, 10–40 m; sweeping; 12 October 1962; N. Wilson leg.; BPBM.
INDONESIA: West Papua: Nabire.
The species is named after the type locality, Nabire; noun in apposition.
This new species differs from all congeners by male subgenital plate rounded apically (pointed in all congeners) and male genitalia with stout pseudepiphallus, slightly convex dorsally, its posterior part very short, slightly concave dorsally, with apex narrowed forming two small lophi with subacute apices; basal margin of pseudepiphallus strongly indented in the middle; pseudepiphallic parameres stout, posterior half forming an internal lobe, apex truncated. Except for the respective original characters of each species, in particular in the shape of the apical part of the pseudepiphallus, the male genitalia of the new species resemble that of R. karimui sp. nov. and R. albatros sp. nov.
Average sized among congeners (Fig.
Male. FWs slightly surpassing apex of fourth abdominal tergite. FW coloration (Fig.
Male genitalia: (Figs
Female. FW reaching apex of second tergite, brown with two clearly defined triangular, cream-colored spots laterally, at base and apex (Fig.
Female genitalia: Ovipositor shorter than FIII. Copulatory papilla with a large rounded apical part strongly plicate; ventro-anterior end forming a rounded rim (Fig.
See Table
Holotype: INDONESIA • ♂; West Papua, Fawi [Faowi] village in upper part of Tariku River (tributary of Mamberamo River), partly low-lying forest and partly forest on hills; 29 January–17 February 2012; A. Gorochov leg.; molecular sample L93; ZIN. Paratypes: INDONESIA • 1♂, 1♀; same information as holotype; ZIN • 1♂, 1♀; same information as holotype; MNHN-EO-ENSIF11142–ENSIF11143 • 1♂, same information as holotype; MZB.
INDONESIA: West Papua: Faowi.
This species is named after the Tariku River; noun in apposition. This species is named after the tributary river rather than the main Mamberamo River, because it has smaller and stouter male genitalia compared to the sympatric species R. mamberamo.
This new species differs from all congeners by male FW venation with extremely indented 1A vein, with its transverse part restricted to inner half of FW, and by male genitalia with pseudepiphallus rectangular, its basal margin strongly indented in the middle, slightly widened laterally near base of rami. Posterior part of pseudepiphallus short and trilobate, with two short stout lophi linked by a thin sclerotized plate forming a median lobe; pseudepiphallic parameres very stout, strongly bent 90° in the middle. General shape of male genitalia similar to that of R. biakis, from which the new species differs by apex of pseudepiphallus, base of rami, and parameres; the two species also differ in body coloration. From the sympatric species R. mamberamo, the new species differs by smaller size and by male and female genitalia.
Small to average sized among congeners (Fig.
Male. FWs reaching middle of third abdominal tergite. FW coloration (Fig.
Male genitalia: (Figs
Female. FW slightly surpassing second tergite, with a distinct cream-colored rounded spot at base (Fig.
Female genitalia: Ovipositor distinctly shorter than FIII. Copulatory papilla globular, its basal part with an irregular sclerotization forming a basal rim with a short basal plate curved dorsally; apex rounded, folded ventrally and slightly sclerotized (Fig.
See Table
Holotype: INDONESIA • ♂; West Papua, Albatros Bivak V. Mamberamo [Mamberamo River, Albatros Bivouac]; 1926; v. Leeuwen leg.; molecular sample L177; MZB-ORTH1974. Paratypes: INDONESIA • 1♂; same information as holotype; MZB-ORTH8968 • 1♂; same information as holotype; (MZB-ORTH8957); molecular sample L211; MNHN-EO-ENSIF11141 • 1♀; West Papua, Kasonaweja Village on Mamberamo River near Van Rees range, forest on not-high hills; 25–27 January 2012; A. Gorochov leg.; molecular sample L95; ZIN.
INDONESIA • 1 juvenile; same information as holotype; ZIN.
INDONESIA: West Papua: Mamberamo River, Albatros Bivouac.
The species is named after the type locality: Albatros; noun in apposition.
This new species differs from all congeners by male genitalia with pseudepiphallus forming at the posterior end two long straight lophi with subacute apices and by female copulatory papilla with a very thin elongate apex.
Average to large sized among congeners (Fig.
Male. FWs reaching middle of fourth abdominal tergite. FW coloration (Fig.
Male genitalia: (Figs
Female. FWs slightly surpassing second tergite. Dorsal field with a distinct cream-colored rounded spot at base and a tiny apical spot (Fig.
Female genitalia: Ovipositor distinctly longer than FIII. Copulatory papilla cupular basally, circled by a narrow sclerite expanded in apical region as parallel sclerotization; apex elongate and folded ventrally, terminated by a rounded area (Figs
See Table
Holotype: INDONESIA • ♀; West Papua: Yapen Island, Aiam Range, Mount Baduri, Japen Seroei Camp 1, 1000 ft. a.s.l.; September 1938; B.M. 1938-593; molecular sample L172; L. E. Cheesman leg; NHMUK.
INDONESIA: West Papua: Yapen Island, Mount Baduri.
This species is named after the type locality, Mount Baduri; noun in apposition.
This new species differs from all congeners by its stocky shape, frons mostly cream-colored with some dark patterns, scapes whitish, and by last abdominal tergite forming a median sinuate expansion above suranal plate.
Average sized among congeners, but stocky (Fig.
Male. Unknown.
Female. Last abdominal tergite forming a median sinuate expansion partly covering suranal plate (Fig.
Female genitalia. Ovipositor about as long as FIIIs. Copulatory papilla globular, its base with two hemi-circular ring-like sclerites; apex short, rounded with tip slightly pointed, folded ventrally, and slightly sclerotized dorsally (Fig.
See Table
This new species is known only by the female type specimen, which makes it difficult to place it in a particular genus among the Lebinthina. Its stocky shape first suggested it could belong to Gnominthus, but a molecular phylogenetic study in preparation revealed that this species belongs to the clade corresponding to Rugabinthus without ambiguity.
Holotype: PAPUA NEW GUINEA • ♂; Karimui, 1000 m; 2–3 June 1961; J. L. Gressitt leg.; BPBM. Paratypes: PAPUA NEW GUINEA • 1♀; Karimui, South of Goroka, 1000 m; 3 June 1961; G. L. and M. Gressitt leg.; molecular sample L210; BPBM • 1♂; Karimui; 4 June 1961; J. L. Gressitt leg.; malaise trap; molecular sample L49; (BPBM); MNHN-EO-ENSIF11333.
PAPUA NEW GUINEA: Karimui.
The species is named after the type locality: Karimui; noun in apposition.
This new species differs from all congeners by smaller size, short male FWs without apical field, and shape of male and female genitalia. Male subgenital plate more elongate than in congeners, with a short apical expansion. Male genitalia very different from all congeners, characterized by elongate apical part of pseudepiphallus forming a long spoon-like finger.
Small sized among congeners (Fig.
Male. FW very short, reaching apex of third abdominal tergite. FW coloration (Fig.
Male genitalia: (Figs
Female. FW reaching middle of second tergite; brown, without basal spot (Fig.
Female genitalia: Ovipositor slightly longer than FIII. Copulatory papilla conical, smaller and stout; apex folded ventrally, short, pointed; dorsal face with a sclerotized area; ventro-anterior end forming an oval to pyriform rim (Figs
See Table
Larandopsis newguineae
Bhowmik, 1981[1979]: 39 -
Macrobinthus newguineae
-
Holotype: INDONESIA • ♀; Dutch New Guinea: Cyclops Mts, Sabron Camp 2; 2000 ft; July 1936; identified Larandopsis newguineae Bhowmik by H. K. Bhowmik, 1973; L. E. Cheesman leg; BMNH-1936-271.
INDONESIA • 1♀; N. New Guinea, “Boven-Jemomaissin” ca. 400 m; 4 April 1911; molecular sample L199; Dr P. N. v. Kampen, Ned. Nw. Guinea Exp leg; RMNH • 1♀; N. New Guinea; 1911; Dr P. N. v. Kampen, Ned. Nw. Guinea Exp leg; RMNH • 1♀; N. New Guinea; April–May 1911; Dr P. N. v. Kampen, Ned. Nw. Guinea Exp leg; RMNH.
INDONESIA: Cyclops Mts.
Among congeners, R. newguineae comb. nov. is characterized by its large size, FWs not reaching abdomen mid-length but well developed, coloration homogeneously dark brown, and very long ovipositor.
See
This species is known only by female specimens until now, which makes it difficult to place it in a genus among the Lebinthina because several genera share the same general shape, such as Rugabinthus and Macrobinthus, while being mostly characterized by male characters (FW venation and genitalia). A molecular phylogenetic study in preparation revealed that this species belongs to the clade corresponding to Rugabinthus, justifying the new combination proposed here.
Head and pronotum in dorsal views: A. R. leopoldi (Chopard, 1931) comb. nov.; B. R. mamberamo sp. nov.; C. R. yayukae sp. nov.; D. R. faowi sp. nov.; E. R. kencana sp. nov.; F. R. manokwari sp. nov.; G. R. maoke sp. nov.; H. R. biakis sp. nov.; I. R. nabire sp. nov.; J. R. tariku sp. nov.; K. R. albatros sp. nov.; L. R. baduri sp. nov.; M. R. karimui sp. nov.; N. R. newguineae (Bhowmik, 1981) comb. nov. Scale bar: 5 mm.
Face: A. R. leopoldi (Chopard, 1931) comb. nov.; B. R. mamberamo sp. nov.; C. R. yayukae sp. nov.; D. R. faowi sp. nov.; E. R. kencana sp. nov.; F. R. manokwari sp. nov.; G. R. maoke sp. nov.; H. R. biakis sp. nov.; I. R. nabire sp. nov.; J. R. tariku sp. nov.; K. R. albatros sp. nov.; L. R. baduri sp. nov.; M. R. karimui sp. nov.; N. R. newguineae (Bhowmik, 1981) comb. nov. Scale bar: 2 mm.
Head and pronotum in lateral views: A. R. leopoldi (Chopard, 1931) comb. nov.; B. R. mamberamo sp. nov.; C. R. yayukae sp. nov.; D. R. faowi sp. nov.; E. R. kencana sp. nov.; F. R. manokwari sp. nov.; G. R. maoke sp. nov.; H. R. biakis sp. nov.; I. R. nabire sp. nov.; J. R. tariku sp. nov.; K. R. albatros sp. nov.; L. R. baduri sp. nov.; M. R. karimui sp. nov.; N. R. newguineae (Bhowmik, 1981) comb. nov. Scale bar: 5 mm.
Male FW in dorsal views: A. R. leopoldi (Chopard, 1931) comb. nov.; B. R. mamberamo sp. nov.; C. R. yayukae sp. nov.; D. R. faowi sp. nov.; E. R. kencana sp. nov.; F. R. manokwari sp. nov.; G. R. maoke sp. nov.; H. R. biakis sp. nov.; I. R. nabire sp. nov.; J. R. tariku sp. nov.; K. R. albatros sp. nov.; L. R. karimui sp. nov. Scale bar: 2 mm.
Male genitalia in dorsal view; posterior apex of pseudepiphallus: A. R. leopoldi (Chopard, 1931) comb. nov.; B. R. mamberamo sp. nov.; C. R. yayukae sp. nov.; D. R. faowi sp. nov.; E. R. kencana sp. nov.; F. R. manokwari sp. nov.; G. R. maoke sp. nov.; H. R. biakis sp. nov.; I. R. nabire sp. nov.; J. R. tariku sp. nov.; K. R. albatros sp. nov.; L. R. karimui sp. nov. Scale bar: 0.5 mm.
Female FW in dorsal views: A. R. leopoldi (Chopard, 1931) comb. nov.; B. R. mamberamo sp. nov.; C. R. faowi sp. nov.; D. R. kencana sp. nov.; E. R. manokwari sp. nov.; F. R. nabire sp. nov.; G. R. tariku sp. nov.; H. R. albatros sp. nov.; I. R. baduri sp. nov.; J. R. karimui sp. nov.; K. R. newguineae (Bhowmik, 1981) comb. nov. Scale bar: 2 mm.
Female copulatory papilla in ventral (all except I, K) and lateral (I, K) views. A. R. leopoldi (Chopard, 1931) comb. nov.; B. R. mamberamo sp. nov.; C. R. faowi sp. nov.; D. R. kencana sp. nov.; E. R. manokwari sp. nov.; F. R. nabire sp. nov.; G. R. tariku sp. nov.; H, I. R. albatros sp. nov.; J. R. baduri sp. nov.; K, L. R. karimui sp. nov.; M. R. newguineae (Bhowmik, 1981) comb. nov. Scale bar: 0.5 mm.
PronL | PronW | FWL | FWW | FIIIL | FIIIW | TIIIL | OL | |
---|---|---|---|---|---|---|---|---|
R. leopoldi (Chopard, 1931) | ||||||||
Male paratype MNHN1441 | 3.0 | 4.9 | 4.5 | 3.0 | 13.7 | 3.9 | 10.4 | - |
Female paratype MNHN1443 | 3.3 | 4.9 | 3.8 | 2.8 | 14.3 | 4.5 | 12.2 | 14.1 |
Female paratype MNHN1442 | 3.2 | 5.0 | 4.0 | 2.6 | 14.2 | 4.5 | 10.9 | 14.8 |
R. mamberamo sp. nov. | ||||||||
Male holotype | 3.0 | 4.4 | 4.3 | 2.8 | 12.4 | 3.6 | 11.0 | - |
Female paratype | 3.0 | 4.4 | 3.7 | 2.6 | 12.3 | 3.9 | 10.7 | 9.1 |
R. yayukae sp. nov. | ||||||||
Male holotype | 2.8 | 4.8 | 5.7 | 3.8 | 13.9 | 4.1 | 10.1 | - |
Males (n = 4) | 2.6–3.3 (2.9) | 4.7–5.0 (4.8) | 4.9–6.0 (5.5) | 3.8–4.5 (4.0) | 13.4–15.6 (14.2) | 4.1–4.7 (4.3) | 10.1–12.6 (11.7) | - |
R. faowi sp. nov. | ||||||||
Male holotype | 2.9 | 3.6 | 4.6 | 2.6 | 11.9 | 3.7 | 10.7 | - |
Males (n = 4) | 2.9–3.3 (3.0) | 3.6–5.2 (4.6) | 4.6–6.7 (5.8) | 2.6–3.5 (3.2) | 11.9–15.8 (13.9) | 3.7–4.5 (4.1) | 10.7–13.1 (11.9) | - |
Females (n = 4) | 3.4–3.6 (3.5) | 5.0–5.3 (5.1) | 4.4–4.6 (4.5) | 2.8–2.8 (2.6) | 16.4–17.0 (16.7) | 4.9–5.2 (5.0) | 15.0–15.6 (15.4) | 19.2–21.0 (20.2) |
R. kencana sp. nov. | ||||||||
Male holotype | 3.0 | 5.0 | 6.9 | 5.0 | - | - | - | - |
Males (n = 2) | 3.0–3.4 (3.2) | 5.0–5.1 (5.13 | 6.4–6.9 (6.7) | 4.3–5.0 (4.7) | 14.9 (14.9) | 4.6 (4.6) | 13.9 (13.9) | - |
Female paratype | 3.2 | 5.1 | 4.5 | 2.8 | 16.2 | 4.7 | 14.1 | 17.9 |
R. manokwari sp. nov. | ||||||||
Male holotype | 2.9 | 4.4 | 4.1 | 3.2 | 11.7 | 3.8 | 10.4 | - |
Female paratype | 2.9 | 4.4 | 3.5 | 2.5 | 13.4 | 3.7 | 12.1 | 10.9 |
R. maoke sp. nov. | ||||||||
Male holotype | 3.4 | 5.8 | 6.5 | 4.7 | 18.0 | 5.2 | 11.0 | - |
Male paratype | 3.6 | 5.5 | 6.5 | 5.0 | 17.3 | 4.9 | 15.8 | - |
R. biakis sp. nov. | ||||||||
Male holotype | 2.5 | 3.9 | 3.9 | 2.7 | 10.7 | 2.7 | 8.6 | - |
Males (n = 4) | 2.4–2.5 (2.5) | 3.9–4.0 (4.0) | 3.7–2.4 (3.9) | 2.7 (2.7) | 10.4–11.3 (10.8) | 2.7–3.5 (3.1) | 7.9–9.1 (8.5) | - |
R. nabire sp. nov. | ||||||||
Male holotype | 3.1 | 4.5 | 4.4 | 3.1 | 12.8 | 4.0 | 11.1 | - |
Males (n = 3) | 2.8–3.1 (3.0) | 4.3–4.7 (4.6) | 4.1–4.4 (4.3) | 3.1–3.4 (3.3) | 12.8 (12.8) | 3.8–4.0 (3.9) | 11.0–11.1 (11.1) | - |
Female paratype | 3.0 | 4.6 | 4.4 | 2.8 | 15.2 | 3.1 | 11.5 | 13.6 |
R. tariku sp. nov. | ||||||||
Male holotype | 2.7 | 4.0 | 4.3 | 2.8 | 12.1 | 3.1 | 9.8 | - |
Males (n = 4) | 2.6–3.0 (2.7) | 4.0–4.4 (4.2) | 4.2–4.7 (4.4) | 2.3–2.8 (2.6) | 11.8–12.6 (12.2) | 3.1–3.8 (3.6) | 9.8–10.7 (10.2) | - |
Female (n = 2) | 2.8–3.2 (3.0) | 4.0–4.7 (4.4) | 3.5 (3.5) | 2.7(2.7) | 12.2–13.2 (12.7) | 3.8 (3.8) | 10.8–11.9 (11.4) | 9.5–10.8 (10.2) |
R. albatros sp. nov. | ||||||||
Male holotype | 2.9 | 4.7 | 5.8 | 3.5 | 15.7 | 4.6 | 13.0 | - |
Males (n = 3) | 2.9–3.1 (3.0) | 4.5–4.8 (4.7) | 5.2–5.8 (5.5) | 3.0–3.5 (3.3) | 14.8–15.7 (15.4) | 4.6–4.7 (4.6) | 12.5–13.7 (13.0) | - |
Female paratype | 3.1 | 4.8 | 4.7 | 2.8 | 14.2 | 4.6 | 12.9 | 19.0 |
R. baduri sp. nov. | ||||||||
Female holotype | 3.2 | 5.2 | 3.5 | 2.5 | 13.0 | 4.5 | 10.4 | 13.4 |
R. karimui sp. nov. | ||||||||
Male holotype | 2.0 | 3.6 | 3.7 | 3.0 | 9.5 | 3.3 | 8.0 | - |
Male paratype | 2.7 | 3.9 | 4.2 | 2.9 | 8.8 | 2.9 | 8.1 | - |
Female paratype | 2.3 | 3.2 | 2.4 | 2.0 | 7.7 | 3.0 | 7.8 | 8.0 |
1 | Frons mostly whitish/cream-colored with some dark patterns; scapes whitish | R. baduri |
– | Frons mostly dark colored; scapes dark colored | 2 |
2 | Distinctly larger, PronL > 4.5 mm | R. newguineae |
– | Smaller, PronL < 4.0 mm | 3 |
3 | Dorsum of head with broad red brown bands narrowly separated. Pronotum dorsal disk generally red brown, sometimes with few lighter patterns | 4 |
– | Dorsum of head yellow brown with five well-separated red brown longitudinal bands. Pronotum dorsal disk yellow brown with dark patterns | 12 |
4 | From Faowi | 5 |
– | From other parts of New Guinea and not in Faowi | 7 |
5 | Pronotum dorsal disk with lateral parts entirely yellow brown or cream-colored, appearing like a lateral bands (even with brown spots within this band) | 6 |
– | Pronotum dorsal disk unicolorous brown or only with sparse yellow brown patterns | R. tariku |
6 | Face black. Labrum yellow brown. Male FWs longer, FWL > 5.5 mm, reaching middle of third abdominal tergite | R. mamberamo |
– | Face brown. Labrum cream-colored. Male FWs shorter, FWL < 4.5 mm reaching middle of fourth abdominal tergite | R. faowi |
7 | Pseudepiphallus with apex forming two long straight lophi with subacute apices | R. albatros |
– | Pseudepiphallus with apex truncated or tapering, not producing into two long lophi | 8 |
8 | Pseudepiphallus with apex truncated | 9 |
– | Pseudepiphallus with apex tapered | 10 |
9 | Male FWs shorter, < 5.0 mm. Fastigium verticis brown with two vertical yellow brown stripes diverging ventrad. Pseudepiphallic parameres strongly bent in basal half (~90°), with posterior apex enlarged, bean-shaped | R. leopoldi (Chopard, 1931) |
– | Male FWs longer, > 5.0 mm. Fastigium verticis red brown with a faint yellow brown T-shaped pattern. Pseudepiphallic parameres with inner process in middle with apical half triangular | R. yayukae |
10 | Male FWs longer, > 6.0 mm. Pseudepiphallus elongated, slenderer | 11 |
– | Male FWs shorter, < 5.0 mm. Pseudepiphallus triangular, stouter | R. nabire |
11 | Smaller in size, male FIIIL < 17.0 mm. Male genitalia distinctly smaller, endophallic apodeme with lateral lamellas pointing posteriorly. Distribution: Kuala Kencana | R. kencana |
– | Larger in size, male FIIIL > 17.0 mm. Male genitalia distinctly larger, endophallic apodeme with lateral lamellae pointing diagonally more externally. Distribution: Star Range | R. maoke |
12 | Fastigium verticis and frons black. Labrum cream-colored | R. biakis |
– | Fastigium verticis black but with some yellow patterns. Labrum darker colored… | 13 |
13 | Smaller in size, FIIIL < 10 mm. Fastigium verticis with a pale yellow-brown n-shaped pattern… | R. karimui |
– | Larger in size, FIIIL > 11 mm. Fastigium verticis with a (+) cross-shaped yellow brown pattern… | R. manokwari |
The new genus Rugabinthus presented in this study includes 14 species in total, from different parts of the New Guinea Island (mostly in the western part) and from closely related islands (Japen I., Biak I.). Except for two new combinations, most species belonging to the genus are new and are currently known only from a single locality. Given the low numbers of specimens for most of these species, and given that Lebinthini are usually abundant when specifically collected, it would appear that the material studied here originated primarily from anecdotal side collections. Thus, this suggests that a large diversity of crickets from New Guinea remains undocumented; we postulate that the restricted distributions may be due to largely incomplete sampling on the island and that the true distribution of each species is still unknown.
Because close-by localities host very different species, with one locality (Faowi) hosting up to three sympatric species, we hypothesize that the diversity of the genus is underestimated. Evidence also suggests that Rugabinthus may show a high level of endemism across New Guinea, similar to or higher than the endemism documented in New Caledonia for Agnoteccous, another genus of Lebinthina (
Furthermore, there is little biological data existing for species of Rugabinthus. The calls and natural history for this genus are completely unknown, since most of the materials examined here were based on old museum collections. This highlights the importance of continued survey of the vast areas of New Guinea, some parts of which remain unexplored. Emphasis should also be placed on collecting natural history data, including the recording of calls and behaviors, given the importance of Lebinthina species in the study of communication systems.
We thank Andrej Gorochov (ZIN) for providing samples from the collections of Saint Petersburg; Rob de Vries, Jérôme Constant, and Carole Paleco (RBINS) for their help during the study of the collections of the Royal Belgian Institute of Natural Sciences, Brussels, funded by the SYNTHESYS European program (BE-TAF-6640); Caroline Pepermans and Luc Willemse (RMNH) for their help with the Leiden collections; Judith Marshall and George Beccaloni (NHMUK) for their help during the study of the Natural History Museum of London collections (funded by the SYNTHESYS European program GB-TAF-531); Oscar Effendi and Erni Ernawati (MZB, Indonesia) for their help during the study of Eneopterine crickets in Cibinong, Indonesia (MZB); and others for helping us in the collection of crickets and in other aspects. We also thank Simon Poulain for making stacked images of some of the species and Benoît Segerer for allowing the use of his in-situ photographs. This study was supported by the Biodiversity Exploration and Discovery National Geographic Grant [NGS-73188R-20]. The work of MKT was supported by the Fyssen Foundation Postdoctoral Fellowship.