Research Article |
Corresponding author: George Wai-Chun Ho ( georgehwc@hotmail.com ) Academic editor: Matan Shelomi
© 2017 George Wai-Chun Ho.
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:
Ho GWC (2017) Contribution to the knowledge of Oriental Phasmatodea I: A taxonomic study of the genus Parasinophasma (Phasmatodea: Necrosciinae). Journal of Orthoptera Research 26(2): 181-194. https://doi.org/10.3897/jor.26.15289
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This paper provides a taxonomic study for the phasmid genus Parasinophasma Chen & He, 2008; reports for the first time Parasinophasma from Hong Kong, China and Vietnam; describes six new species and two new subspecies: P. bresseeli sp. n., P. constanti sp. n., P. laifanae sp. n., P. liui sp. n., P. luchunense luchunense sp. n. and subsp. n., P. luchunense xingyuei subsp. n. and P. sparsigranulatum sp. n.; proposes one new combination: Parasinophasma bouvieri (Redtenbacher, 1908) comb. n. transferred from Orthonecroscia Kirby, 1904; and gives a checklist of known species and a revised key to species.
China, new nomenclature, new taxa, stick insects, Vietnam
The Phasmatodea genus Parasinophasma Chen & He, 2008, is a Chinese endemic genus principally distributed in eastern to southwestern regions, including Fujian, Guangdong, Guangxi, Guizhou, Hainan, Henan, Jiangxi, Sichuan, Yunnan and Zhejiang, China (
The specimens of Parasinophasma laifanae sp. n. and P. luchunense luchunense sp. n. and subsp. n. were collected directly by hand by the present author at night due to their nocturnal behavior. A hand torch was used to spot them on plants. The specimens were dried and pinned after collecting. No food plant fed upon by the collected species was observed. Other taxa are from collections deposited in China Agricultural University, Beijing, China (CAU) and the Royal Belgian Institute of Natural Sciences, Brussels, Belgium (RBINS). The type specimens of new taxa were deposited in CAU, RBINS, and the Hong Kong Entomological Society collection, Hong Kong, China (HKES). Morphological terms follow
= Euphasma Chen & He, 2001 [Preoccupied by Euphasma Redtenbacher, 1906]
Micadina henanensis Bi & Wang, 1998: 12 (= Parasinophasma henanense), by original designation.
Body greenish or grayish brown; cylindrical, slender and elongate, unarmed. Female distinctly more robust and slender than male. Head oval or oblong, smooth. Vertex with three ocelli or lacking ocelli. Occiput distinctly or weakly convex. Antennae filiform and long. Thorax with granules of irregular sizes. Mesonotum slender and elongate. Abdomen cylindrical, usually smooth. Anal segment distinctly or weakly emarginated posteriorly. Supra-anal segment indistinct. Male ninth tergum elongate, longer than eighth tergum. Female gonapophyses rarely exposed. Cerci tapering posteriorly, straight or weakly curved in female; cerci tapering posteriorly, straight or distinctly curved in male, also with or lacking spine-like appendage. Male vomer small and almost symmetric, distinctly or weakly emarginated apically. Legs unarmed, slender and long. Tegmina oval. Alae maculated, shorter than or longer than mesonotum.
China and Vietnam.
Currently 14 species and two subspecies are recognized. This genus is reported for the first time from Hong Kong.
1. Parasinophasma bouvieri (Redtenbacher, 1908: 553), comb. n. [Vietnam (Tonkin/North Vietnam)].
2. Parasinophasma bresseeli sp. n. [Vietnam (Vinh Phuc)].
3. Parasinophasma constanti sp. n. [Vietnam (Cao Bang and Lao Cai)].
4. Parasinophasma fanjingshanense Chen & He, in
5. Parasinophasma guangdongense Chen & He, 2008: 154, fig. 122. [China (Guangdong)].
6. Parasinophasma hainanense Chen & He, 2008: 155, fig. 123. [China (Hainan)].
7. Parasinophasma henanense (Bi & Wang, 1998: 12, figs 7–8). [China (Guangxi, Guizhou, Henan, Hunan, Jiangxi, Sichuan and Zhejiang)].
8. Parasinophasma laifanae sp. n. [China (Hong Kong)].
9. Parasinophasma liui sp. n. [Vietnam (Thua Thien Hue)].
10.1. Parasinophasma luchunense luchunense sp. n. and subsp. n. [China (Yunnan)].
10.2. Parasinophasma luchunense xingyuei subsp. n. [Vietnam (Lao Cai)].
11. Parasinophasma maculatum Ho, 2015: 331, figs 1a, 2a–b. [China (Yunnan)].
12. Parasinophasma sparsigranulatum sp. n. [Vietnam (Lam Dong)].
13. Parasinophasma tianmushanense Ho, 2015: 332, figs 1b–g, 2c–d, g. [China (Zhejiang)].
14. Parasinophasma unicolor Ho, 2015: 333, figs 2e–f, 2h–i. [China (Fujian)].
Key to males of Parasinophasma
1 | Anal abdominal segment longer than ninth abdominal tergum | P. constanti sp. n. |
– | Anal abdominal segment shorter than ninth abdominal tergum | 2. |
2 | Occiput of head weakly convex, nearly flattened | 3. |
– | Occiput of head distinctly convex | 4. |
3 | With ocelli between compound eyes | P. liui sp. n. |
– | Lacking ocelli between compound eyes | P. unicolor sp. n. |
4 | Alae short, posterior apices not surpassing fourth abdominal tergum | 5 |
– | Alae long, posterior apices surpassing fourth abdominal tergum | 6 |
5 | Anal abdominal with a U-shaped emargination on posterior margin | P. luchunense luchunense sp. n. and subsp. n. |
– | Anal abdominal with a V-shaped emargination on posterior margin | P. luchunense xingyuei subsp. n. |
6 | With ocelli between compound eyes | 7 |
– | Lacking ocelli between compound eyes | 8 |
7 | Cerci flattened | P. fanjingshanense |
– | Cerci cylindrical | P. hainanense |
8 | Cerci with spine-like appendage | 9 |
– | Cerci lacking spine-like appendage | 10 |
9 | Base of cerci with spine-like appendage | P. guangdongense |
– | Middle area of cerci with spine-like appendage | P. laifanae sp. n. |
10 | Cerci straight | P. bouvieri comb. n. |
– | Cerci curved upwards in second half | 11 |
11 | Ninth abdominal tergum lacking elongate posterolateral angles | P. bresseeli sp. n. |
– | Ninth abdominal tergum with elongate posterolateral angles | 12 |
12 | Posterior apices of alae not reaching sixth abdominal tergum | P. tianmushanense |
– | Posterior apices of alae reaching seventh abdominal tergum | P. henanense |
1 | Alae short, posterior apices not surpassing third abdominal tergum | 2 |
– | Alae long, posterior apices surpassing third abdominal tergum | 3 |
2 | Occiput of head distinctly convex | P. constanti sp. n. |
– | Occiput of head weakly convex, nearly flattened | P. luchunense luchunense sp. n. and subsp. n. |
3 | Occiput of head weakly convex, nearly flattened | 4 |
– | Occiput of head distinctly convex and elevated | 6 |
4 | Body robust and stout | P. unicolor |
– | Body slender and elongate | 5 |
5 | With ocelli between compound eyes | P. liui sp. n. |
– | Lacking ocelli between compound eyes | P. sparsigranulatum sp. n. |
6 | Occiput of head with four black longitudinal stripes | P. fanjingshanense |
– | Occiput of head lacking black longitudinal stripes | 7 |
7 | Posterior apex of subgenital plate not reaching posterior margin of ninth abdominal tergum | P. tianmushanense |
– | Posterior apex of subgenital plate surpassing posterior margin of ninth abdominal tergum | 8 |
8 | Profemora lacking maculations | 9 |
– | Profemora with maculations | 10 |
9 | Seventh abdominal sternum lacking noticeable praeopercular organ | P. henanense |
– | Seventh abdominal sternum with tubercle-like praeopercular organ posteromedially | P. laifanae sp. n. |
10 | Mesonotum densely granulated | P. maculatum |
– | Mesonotum sparsely granulated | P. bresseeli sp. n. |
Holotype ♂, Cho Moi, Tonkin (North Vietnam), III.1896, M. Roget (MNHN) [assessed by photos downloaded from Phasmida Species File Online (
Vietnam (Tonkin/North Vietnam).
This species is transferred from Orthonecroscia.
Holotype ♂, 21°31'N, 105°33'E, Tam Dao National Park, Vietnam, 25–30.VII.2011, Joachim Bresseel and Jerome Constant (RBINS); Paratypes 2♂ and 3♀, 21°31'N, 105°33'E, Tam Dao National Park, Vietnam, 25-30.VII.2011, Joachim Constant and Jerome Bresseel (RBINS).
Parasinophasma bresseeli sp. n. is closely related to P. henanense (Bi & Wang, 1998), but can be separated by its large and bulky body in both sexes, lack of elongate posterolateral angles on the ninth abdominal tergum in males and sparsely granulated mesonotum in females.
Male (Figs
Coloration: Head brown with blackish brown longitudinal stripes. Antennae dark brown. Thorax black, with brown longitudinal stripes. Abdomen black with brownish yellow maculations. Legs orange brown. Tegmina blackish brown, with yellowish brown veins. Costal region of alae blackish brown, with yellowish brown veins, anal segment uniformly gray.
Female (Figs
Coloration: General color of body brown. Head brown with black maculations. Antennae dark brown. Legs generally brown to greenish brown, profemora with darker maculations, mesofemora and metafemora uniformly colored. Tegmina and costal region of alae brown with grayish brown maculations. Anal region of alae gray with pale white spots.
(mm) Holotype ♂, Body length: 69, head: 3.5, antennae: lost, pronotum: 3, mesonotum: 9, metanotum including median segment: 8.5, profemora: 14, mesofemora: 10, metafemora: 15, protibiae: 13, mesotibiae: 9.5, metatibiae: 15, tegmina: 4, alae: 35. Paratypes ♂, Body length: 61–62, head: 3.5, antennae: 42–47, pronotum: 3, mesonotum: 9, metanotum including median segment: 8.5, profemora: 15, mesofemora: 11–12, metafemora: 17, protibiae: 15, mesotibiae: 11, metatibiae: 17–18, tegmina: 3.5–4, alae: 34–36. Paratypes ♀, Body length: 78–87, head: 5–5.5, antennae: 42–43, pronotum: 4, mesonotum: 11–12, metanotum including median segment: 11–13, profemora: 15–16, mesofemora: 11, metafemora: 15–16, protibiae: 14–16, mesotibiae: 9–10, metatibiae: 14–16, tegmina: 5–6, alae: 43–44.
Vietnam.
The antennae of the holotypic male are lost and its measurements are insufficiently provided.
Holotype ♂, 22°36'N, 105°53'E, Pia Oac Mt. Nature Reserve, Vietnam, 4–6.VIII.2010, Jerome Constant and P. Limbourg (RBINS); Paratypes 1♂ and 1 subadult ♀, 22°36'N, 105°53'E, Pia Oac Mt. Nature Reserve, Vietnam, 4–6.VIII.2010, Jerome Constant and P. Limbourg (RBINS); 1♀, 22°21’00"N, 103°46'29"E, Hoang Lien National Park, Vietnam, 1–5.VII.2013, Joachim Bresseel and Jerome Constant (RBINS).
Parasinophasma constanti sp. n. is related to P. luchunense luchunense sp. n. and subsp. n., but can be separated by its posteriorly elongate anal abdominal segment in males and lack of noticeable praeopercular organs on the seventh abdominal sternum and short alae in females.
Male (Figs
Coloration: General color of body yellowish brown. Antennae dark brown. Pronotum and mesonotum with a blackish mediolongitudinal stripe. Abdomen yellowish brown with blackish maculations. Legs generally black. Tegmina dark brown, with yellowish brown stripe on outer margin. Anal region of alae uniformly gray.
Female (Figs
Coloration: General color of body brown. Legs brown with pale brown and black maculations. Tegmina brown. Alae brown with pale brown maculations.
(mm) Holotype ♂, Body length: 44, head: 3, antennae: 32, pronotum: 2.5, mesonotum: 9, metanotum including median segment: 6, profemora: 12, mesofemora: 9, metafemora: 13, protibiae: 11, mesotibiae: 8, metatibiae: 13, tegmina: 2, alae: 17. Paratype ♂, Body length: 44, head: 3, antennae: 22, pronotum: 2.5, mesonotum: 9, metanotum including median segment: 6, profemora: 13, mesofemora: 9, metafemora: 13, protibiae: 11, mesotibiae: 8, metatibiae: 12, tegmina: 2, alae: 17. Paratype ♀, Body length: 66, head: 4, antennae: 38, pronotum: 3, mesonotum: 13, metanotum including median segment: 7, profemora: 15, mesofemora: 10, metafemora: lost, protibiae: 14, mesotibiae: 9, metatibiae: lost, tegmina: 3, alae: 11.
Vietnam.
The hind legs of the adult paratypic female are lost and their measurements are insufficiently provided.
Holotype ♂, Fung Wong Shan, Lantau Island, Hong Kong, 20.VIII.2016, George Ho Wai-Chun (HKES); Paratypes 1♂ and 1♀, Fung Wong Shan, Lantau Island, Hong Kong, 20.VIII.2016, George Ho Wai-Chun (HKES); 5♂, 2♀ and 17 eggs (naturally laid by 1 paratype ♀), Fung Wong Shan, Lantau Island, Hong Kong, 16.IX.2016, George Ho Wai-Chun (HKES); 1♂, Fung Wong Shan, Lantau Island, Hong Kong, 4.VIII.2017, George Ho Wai-Chun (HKES); 2♂, 1♀ and 3 eggs (naturally laid by paratype ♀), Fung Wong Shan, Lantau Island, Hong Kong, 7.IX.2017, George Ho Wai-Chun (HKES); 1♂, Fung Wong Shan, Lantau Island, Hong Kong, 9.X.2017, George Ho Wai-Chun (HKES); 1♂, Fung Wong Shan, Lantau Island, Hong Kong, 4.XI.2017, George Ho Wai-Chun (HKES).
Parasinophasma laifanae sp. n. is similar to P. guangdongense Chen & He, 2008, but can be distinguished by non-elongate ninth abdominal tergum and notched posterior margin on poculum in male. The female of P. laifanae sp. n. is similar to P. henanense (Bi & Wang, 1998), but can be easily separated by tubercle-like praeopercular organ on seventh abdominal sternum and basal elevations on anterodorsal, posterodorsal, anteroventral and posteroventral carinae of mesofemora and metafemora.
Male (Figs
Coloration: General color of body brown. Scapus and pedicellus light brown, other antennal segments dark brown. Mesonotum marked with a black line on each side of lateral margins. Abdomen brown with blackish maculations. Profemora and protibiae dark brown with black maculations. Protarsi brown. Mesofemora, mesotibiae, mesotarsi, metafemora, metatibiae and metatarsi green with blackish apices. Tegmina light brown, with black and green maculations. Alae grayish brown with black maculations.
Female (Figs
Coloration: General color of body grayish brown. Legs grayish brown with black maculations. Tegmina and alae grayish brown with pale brown and black maculations. Anal region of alae gray, with brown spots.
(mm) Holotype ♂, Body length: 68, head: 4, antennae: 50, pronotum: 3, mesonotum: 10.5, metanotum including median segment: 10, profemora: 18.5, mesofemora: 12, metafemora: 18, protibiae: 17, mesotibiae: 10.5, metatibiae: 17, tegmina: 4, alae: 34. Paratypes ♂, Body length: 64–72, head: 4, antennae: 48–52, pronotum: 3, mesonotum: 10–11, metanotum including median segment: 9–10, profemora: 18–20, mesofemora: 11.5–12, metafemora: 16.5–19.5, protibiae: 17–19, mesotibiae: 10–11, metatibiae: 17–18, tegmina: 4, alae: 33–35. Paratypes ♀, Body length: 87–92, head: 6, antennae: 45–47, pronotum: 4, mesonotum: 12–14, metanotum including median segment: 12–13, profemora: 18, mesofemora: 10–11, metafemora: 15–16, protibiae: 16–17, mesotibiae: 8.5–9, metatibiae: 14–15, tegmina: 6, alae: 42–44.
Eggs (Figs
(mm) Length: 3, width: 1.4, height: 1.6.
Hong Kong.
This species inhabits the middle level of evergreen broadleaf forests.
This new species is named in honor of Lee Lai-Fan (the co-discoverer of this new species from Hong Kong) for her constant support during the author’s phasmid research.
Holotype ♂, Bach Ma, Phu Loc, Thua Thien Hue Province, Vietnam, 27.IX.2011, Liu Xing-Yue (CAU); Paratypes 1♀, Bach Ma, Phu Loc, Thua Thien Hue Province, Vietnam, 27.IX.2011, Liu Xing-Yue (CAU); 1♂, Quang Nam Province, Vietnam, 6.V.2012, unknown collector (HKES).
The general appearance of Parasinophasma liui is slightly different from other members in the genus, but the characters of grayish brown coloration, elongate body and weakly elevated occiput of the head in both sexes, indistinctly elongate ninth abdominal tergum in male and non-exposed gonapophyses in female match with Parasinophasma. P. liui sp. n. is similar to P. fanjingshanense Chen & He, 2006, but can be distinguished by more slender and elongate body and oblong head in both sexes, non-granulated mesonotum in male and weakly convex occiput of head and elongate mesonotum in female.
Male (Figs
Coloration: Dull coloration, body generally light brown. Head light brown with six faint blackish or grayish-brown longitudinal bands segregated by five light brown longitudinal stripes. Genae with a black postocular stripe. Antennae light brown. Pronotum light brown. Mesonotum, mesosternum, mesopleurae, metapleurae and metasternum light brown, with pale white and blackish brown maculations. Abdomen and legs light brown. Tegmina and alae brown with blackish brown maculations.
Female (Figs
Coloration: Dull coloration, body generally brown. Genae with blackish maculations. Antennae and pronotum brown. Mesonotum, mesosternum, mesopleurae, metapleurae, metasternum, abdomen and legs brown, with blackish brown maculations. Tegmina and alae brown with blackish brown maculations.
(mm) Holotype ♂, Body length: 62, head: 2.5, antennae: 51, pronotum: 2, mesonotum: 11, metanotum including median segment: 6, profemora: 16, mesofemora: 10, metafemora: 16, protibiae: 16, mesotibiae: 10, metatibiae: 18, tegmina: 1.5, alae: 28. Paratype ♂, Body length: 69, head: 2.5, antennae: 59, pronotum: 2, mesonotum: 12, metanotum including median segment: 8, profemora: 18, mesofemora: 12, metafemora: 18.5, protibiae: 17.5, mesotibiae: 11, metatibiae: 20, tegmina: 2, alae: 32. Paratype ♀, Body length: 100, head: 5, antennae: 56, pronotum: 3, mesonotum: 17, metanotum including median segment: 12, profemora: 18, mesofemora: 13, metafemora: 19, protibiae: 17, mesotibiae: 12, metatibiae: 20, tegmina: 4.5, alae: 48.
Vietnam.
Holotype ♂, 1300–1400m, Huanglianshan, Luchun, Yunnan Province, China, 6.IX.2016, George Ho Wai-Chun (HKES); Paratypes 2♂ and 2♀ (including 1 subadult), 1300–1400m, Huanglianshan, Luchun, Yunnan Province, China, 6.IX.2016, George Ho Wai-Chun (HKES).
Parasinophasma luchunense sp. n. and subsp. n. is distinctive from all other species in having a deep posterior emargination on anal abdominal segment in both sexes, spine-like appendage near the base of cerci in male and dorsoventrally flattened praeopercular organ on seventh abdominal sternum and short alae in female.
Male (Figs
Coloration: Dull coloration, body generally greenish brown. Head greenish brown. Genae with two faint black postocular stripes. Antennae dark brown. Pronotum brown, with three short blackish brown stripes behind transverse sulcus. Mesonotum greenish brown, with a narrow black longitudinal stripe along lateral margins. Mesosternum, mesopleurae, metapleurae and metasternum brown. Abdomen brown with black maculations. Forelegs brown, midlegs and hindlegs green. Tegmina and alae brown with blackish maculations. Anal region of alae gray.
Female (Figs
Coloration: General color of body greenish brown. Forelegs brown with black maculations, midlegs and hindlegs green. Tegmina and alae brown with blackish maculations. Anal region of alae light brown with gray spots.
(mm) Holotype ♂, Body length: 57, head: 3, antennae: 51, pronotum: 2, mesonotum: 13, metanotum including median segment: 5.5, profemora: 18, mesofemora: 11, metafemora: 17, protibiae: 18, mesotibiae: 11, metatibiae: 17, tegmina: 2, alae: 13. Paratypes ♂, Body length: 57–58, head: 3, antennae: 50–53, pronotum: 2, mesonotum: 12.5–13, metanotum including median segment: 5.5, profemora: 17–17.5, mesofemora: 10.5–11, metafemora: 15.5, protibiae: 17–17.5, mesotibiae: 10.5, metatibiae: 16, tegmina: 2, alae: 12–13. Paratype ♀, Body length: 67, head: 4, antennae: 41, pronotum: 3, mesonotum: 14, metanotum including median segment: 7.5, profemora: 14, mesofemora: 9, metafemora: 14, protibiae: 13, mesotibiae: 8, metatibiae: 13, tegmina: 2.5, alae: 14.
This species is found in evergreen broadleaf forests between 1300 and 1400 meters above sea level.
China.
The specimen of the subadult female is not in good condition. Therefore, the descriptions, illustrations and measurements of females are only given for the adults.
This new species is named after the type locality, Luchun (Yunnan, China).
Holotype: ♂, Xeo My Ty, Sa Pa, Lao Cai Province, Vietnam, 17.IX.2011, Liu Xing-Yue (CAU).
Parasinophasma luchunense xingyuei subsp. n. is closely related to P. luchunense luchunense sp. n. and subsp. n., but can be separated by its slightly larger size, deep V-shaped emargination on the posterior margin of anal abdominal segment and longer alae.
Male (Figs
Coloration: Dull coloration, body generally brown. Head brown, with four faint longitudinal bands segregated by five light brown longitudinal stripes. Genae with two black postocular stripes. Antennae dark brown. Pronotum brown, with two short blackish brown longitudinal stripes behind transverse sulcus. Mesonotum brown, darker than pronotum, with a narrow black longitudinal stripe along lateral margins. Mesosternum dark brown. Mesopleurae, metapleurae and metasternum brown. Abdomen brown with black maculations. Legs greenish brown. Tegmina and alae dark brown.
(mm) Holotype ♂, Body length: 60, head: 3, antennae: 57, pronotum: 2.5, mesonotum: 13.5, metanotum including median segment: 6, profemora: 20, mesofemora: 13, metafemora: 18, protibiae: 19, mesotibiae: 12, metatibiae: 19, tegmina: 2.5, alae: 17.
Vietnam.
This species is named in honor of Liu Xing-Yue (Beijing, China) for his discovery of this new subspecies.
Holotype: ♀, Giang Ly, Lac Duong, Lam Dong Province, Vietnam, 12.V.2012, Liu Xing-Yue (CAU).
Parasinophasma sparsigranulatum sp. n. is readily separated from all other species by its small size, slender body, very sparse granulations on mesonotum and lack of a noticeable praeopercular organ on the seventh abdominal sternum.
Female (Figs
Coloration: General color of body yellowish brown. Legs yellowish brown. Tegmina and alae yellowish brown with green posterior area. Alae yellowish brown with green posterior area, anal region pale white with brown veins.
(mm) Holotype ♀, Body length: 49, head: 3, antennae: 32 (incomplete), pronotum: 2.5, mesonotum: 10, metanotum including median segment: 6.5, profemora: 15.5, mesofemora: 10.5, metafemora: 14, protibiae: 15.5, mesotibiae: 9.5, metatibiae: 14, tegmina: 4.5, alae: 21.
Vietnam.
The male is unknown. The description of the coloration is based on the dried specimen which is probably a green species in nature based on the green posterior area of the tegmina and alae.
The specific epithet of this new species is derived from the sparse granulations on the mesonotum.
Parasinophasma spp. 28. P. bresseeli sp. n.: ♂, habitus. 29. P. bresseeli sp. n.: ♂, apex of abdomen, lateral view; 30. P. bresseeli sp. n.: ♂, apex of abdomen, dorsal view; 31. P. bresseeli sp. n.: ♀, habitus; 32. P. bresseeli sp. n.: ♀, apex of abdomen, lateral view; 33. P. bresseeli sp. n.: ♀, apex of abdomen, dorsal view; 34. P. bresseeli sp. n.: ♂, head and thorax, dorsolateral view; 35. P. bresseeli sp. n.: ♀, head and thorax, dorsolateral view; 36. P. constanti sp. n.: ♂, habitus; 37. P. constanti sp. n.: ♂, apex of abdomen, lateral view; 38. P. constanti sp. n.: ♂, apex of abdomen, dorsal view; 39. P. constanti sp. n.: ♀, habitus; 40. P. constanti sp. n.: ♀, apex of abdomen, lateral view; 41. P. constanti sp. n.: ♀, apex of abdomen, dorsal view; 42. P. constanti sp. n.: ♂, head and thorax, dorsolateral view; 43. P. constanti sp. n.: ♀, head and thorax, dorsolateral view.
Parasinophasma spp. 44. P. laifanae sp. n.: ♂, habitus; 45. P. laifanae sp. n.: ♂, apex of abdomen, lateral view; 46. P. laifanae sp. n.: ♂, apex of abdomen, dorsal view; 47. P. laifanae sp. n.: ♀, habitus; 48. P. laifanae sp. n.: ♀, apex of abdomen, lateral view; 49. P. laifanae sp. n.: ♀, apex of abdomen, dorsal view; 50. P. laifanae sp. n.: ♂, head and thorax, dorsolateral view; 51. P. laifanae sp. n.: ♀, head and thorax, dorsolateral view; 52. P. liui sp. n.: ♂, habitus; 53. P. liui sp. n.: ♂, apex of abdomen, lateral view; 54. P. liui sp. n.: ♂, apex of abdomen, dorsal view; 55. P. liui sp. n.: ♀, habitus; 56. P. liui sp. n.: ♀, apex of abdomen, lateral view; 57. P. liui sp. n.: ♀, apex of abdomen, dorsal view; 58. P. liui sp. n.: ♂, head and thorax, dorsolateral view; 59. P. liui sp. n.: ♀, head and thorax, dorsolateral view.
Parasinophasma spp. 60. P. luchunense luchunense sp. n. and subsp. n.: ♂, habitus; 61. P. luchunense luchunense sp. n. and subsp. n.: ♂, apex of abdomen, lateral view; 62. P. luchunense luchunense sp. n. and subsp. n.: ♂, apex of abdomen, dorsal view; 63. P. luchunense luchunense sp. n. and subsp. n.: ♀, habitus; 64. P. luchunense luchunense sp. n. and subsp. n.: ♀, apex of abdomen, lateral view; 65. P. luchunense luchunense sp. n. and subsp. n.: ♀, apex of abdomen, dorsal view; 66. P. luchunense luchunense sp. n. and subsp. n.: ♂, head and thorax, dorsolateral view; 67. P. luchunense luchunense sp. n. and subsp. n.: ♀, head and thorax, dorsolateral view; 68. P. luchunense xingyueni subsp. n.: ♂, habitus; 69. P. sparsigranulatum sp. n.: ♀, habitus; 70. P. sparsigranulatum sp. n.: ♀, apex of abdomen, lateral view; 71. P. sparsigranulatum sp. n.: ♀, apex of abdomen, dorsal view.
Species | China | Vietnam | ||||||||||||||||||
Fujian | Guangdong | Guangxi | Guizhou | Hainan | Henan | Hubei | Hunan | Jiangxi | Sichuan | Yunnan | Zhejiang | Chongqing | Hong Kong | Cao Bang | Lao Cai | Lam Dong | Thua Thien Hue | Tonkin (North Vietnam) | Vinh Phuc | |
P. bouvieri | ✓ | |||||||||||||||||||
P. bresseeli sp. n. | ✓ | |||||||||||||||||||
P. constanti sp. n. | ✓ | ✓ | ||||||||||||||||||
P. fanjingshanense | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ||||||||||||||
P. guangdongense | ✓ | |||||||||||||||||||
P. hainanense | ✓ | |||||||||||||||||||
P. henanense | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | |||||||||||||
P. laifanae sp. n. | ✓ | |||||||||||||||||||
P. liui sp. n. | ✓ | |||||||||||||||||||
P. luchunense luchunense sp. n. and subsp. n. | ✓ | |||||||||||||||||||
P. luchunense xingyuei subsp. n. | ✓ | |||||||||||||||||||
P. maculatum | ✓ | |||||||||||||||||||
P. sparsigranulatum sp. n. | ✓ | |||||||||||||||||||
P. tianmushanense | ✓ | |||||||||||||||||||
P. unicolor | ✓ |
Parasinophasma Chen & He, 2008 is mainly distributed over China and Vietnam (Table 1). Parasinophasma is closely related to Sinophasma Günther, 1940, but can be separated by grayish or greenish-brown coloration, more slender and elongate body, elevated occiput of the head, and posteriorly emarginated anal abdominal segment. Recently, a new Necrosciinae genus, Ovacephala Seow-Choen, 2016, has been established based on two species, O. extraordinaria (Redtenbacher, 1908) and P. parisae Seow-Choen, 2016. Both of them occur in Borneo and P. parisae can also be found in Peninsular Malaysia. However, O. parisae, which strongly resembles the females of P. bresseeli sp. n., P. constanti sp. n., P. henanense (Bi & Wang, 1998) and P. laifanae sp. n., should be a member of Parasinophasma. Therefore, further material of O. parisae, especially corresponding male and eggs produced by female, are needed to clarify its taxonomic status.
Currently, a total of 14 species and two subspecies are recognized from Parasinophasma. Nine species and one subspecies, P. fanjingshanense Chen & He, 2006, P. guangdongense Chen & He, 2008, P. hainanense Chen & He, 2008, P. henanense Bi & Wang, 1998, P. laifanae sp. n., P. luchunense luchunense sp. n. and subsp. n., P. maculatum Ho, 2015, P. tianmushanense Ho, 2015 and P. unicolor Ho, 2015, occur in China while other taxa, P. bouvieri (Redtenbacher, 1908) comb. n., P. bresseeli sp. n., P. constanti sp. n., P. liui sp. n., P. luchunense xingyuei subsp. n., and P. sparsigranulatum sp. n., occur in Vietnam. The diversification of the species of Parasinophasma in China and Vietnam seems to relate to the extremely complex topography, where the discontinuous mountainous areas or isolated islands can stimulate speciation. Most taxa have been recorded from isolated localities, such as P. hainanense in Hainan Island, South China; P. guangdongense in Nanling mountainous area, Guangdong, South China; P. liui sp. n. in Thua Thien Hue, Central Vietnam; P. unicolor in Liangyeshan, Fujian, East China and P. sparsigranulatum sp. n. in Lam Dong, South Vietnam. Also, P. luchunense xingyuei subsp. n. in Lao Cai, North Vietnam is closely related to the nominate P. luchunense luchunense sp. n. and subsp. n. in Yunnan, Southwest China. Speciation of both taxa may be induced by the disconnection of different hills on the same mountainous range between southwestern China and northern Vietnam. By contrast, two taxa, P. fanjingshanense and P. henanense, are quite widely distributed over the central to southern mountainous range of continental China. Further collecting trips to various localities in China and Vietnam may discover more taxa for this genus. In addition, the discovery of P. laifanae sp. n. represents the first record of Parasinophasma from Hong Kong and the twentieth Phasmatodea species for the region (
A total of eight new taxa including six new species and two new subspecies are proposed in this study. The taxonomic status of some new taxa may need further verification. For example, the female of P. luchunense xingyuei subsp. n. and the male and egg of P. sparsigranulatum sp. n. are unknown. Also, the appearance of P. liui sp. n. looks slightly different from other taxa in the genus, but the grayish-brown coloration, elongate body and weakly elevated occiput of head in both sexes, indistinctly elongate ninth abdominal tergum in male and non-exposed gonapophyses in female match with Parasinophasma. Further specimens collected from the type-locality are needed to verify the taxonomic placement of these taxa.
The findings of this study also have significance regarding other proposed species and clades in the Phasmatodea.
Although there is no record of Parasinophasma outside of China and Vietnam, potential populations of the genus can possibly be found in other countries in the Indochinese area, such as Laos, Cambodia, Myanmar and Thailand. Further research should be conducted to contribute to our knowledge on the distribution pattern of these lesser known phasmids in the Oriental region.
Thanks are given to Lee Lai-Fan (Hong Kong) for her constant support during the author’s phasmid research; Liu Xing-Yue (China Agricultural University, Beijing, China), Joachim Bresseel (Royal Belgian Institute of Natural Sciences, Brussels, Belgium) and Jérôme Constant (Royal Belgian Institute of Natural Sciences, Brussels, Belgium) for providing collecting information on corresponding specimens; Dr. Matan Shelomi (National Taiwan University, Taiwan) for proofreading the manuscript; staff of Huanglianshan Nature Reserve, Yunnan, China for their kind assistance; China Agricultural University, Beijing, China and Royal Belgian Institute of Natural Sciences, Brussels, Belgium for loan of specimens; and the anonymous reviewers for providing valuable comments and suggestions to improve the manuscript.