Parasinophasma constanti, Ho, George Wai-Chun, 2017

Ho, George Wai-Chun, 2017, Contribution to the knowledge of Oriental Phasmatodea I: A taxonomic study of the genus Parasinophasma (Phasmatodea: Necrosciinae), Journal of Orthoptera Research 26 (2), pp. 181-194 : 182-184

Parasinophasma constanti sp. n. Figs 5-7, 36-43

Type material.-

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).

Diagnosis.-

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.

Description.-

Male (Figs 5-6, 36-38, 42): Small size, smaller and more slender than female. Head oblong, longer than wide, lacking granulation. Vertex flat, lacking ocelli. Occiput convex, with distinct median and lateral longitudinal furrows. Compound eyes big and rounded, length about two times that of genae. Antennae filiform, reaching fourth abdominal tergum, densely covered with short bristles; scapus flattened basally, slightly longer than pedicellus; third segment as long as combined length of scapus and pedicellus. Pronotum lacking granulation, rectangular, longer than wide, shorter than head; anterior margin curved inwards, posterior margin rounded, transverse and longitudinal sulci crossing before middle point. Mesonotum densely granulated, with a short transverse carina near anterior area, both ends not reaching lateral margins; roughly as long as combined length of pronotum, metanotum and median segment, parallel-sided, median longitudinal line distinct. Mesopleurae, mesosternum, metapleurae and metasternum lacking granulation. Abdomen smooth, lacking granulation. Second to seventh tergites parallel-sided. Eighth tergum expanded posteriorly, slightly shorter than ninth tergum. Anal segment longer than ninth tergum, elongated and tapering posteriorly, apex obtuse. Poculum cup-shaped, tapering posteriorly, apex pointed and reaching anterior area of anal segment. Cerci cylindrical, straight, apices reaching middle area of anal segment. Legs sparsely covered with short bristles. Unarmed. Profemora indistinctly curved basally, shorter than combined length of head, pronotum and mesonotum. All tibiae roughly as long as corresponding femora. Tegmina small and oval, shorter than head, posterior margin truncate. Alae short, posterior apices reaching posterior margin of fifth abdominal tergum.

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 7, 39-41, 43): Medium-sized. Distinctly larger than and more robust than male. Head oblong, longer than wide, lacking granulation. Vertex flat. Occiput conically convex, with distinct median and lateral longitudinal furrows. Compound eyes big and rounded, length about two-and-one-half times that of genae. Antennae filiform, reaching fourth abdominal tergum, sparsely covered with short bristles; scapus flattened basally, as long as third segment, longer than pedicellus. Pronotum lacking granulation, rectangular, longer than wide, shorter than head; anterior margin curved inwards, posterior margin rounded, transverse and longitudinal sulci crossing before middle point. Mesonotum with a few small black granules; longer than combined length of pronotum, metanotum and median segment, parallel-sided, median longitudinal line distinct. Mesopleurae, metapleurae and metasternum lacking granulation. Mesosternum inconspicuously covered with a few minute granules. Abdomen cylindrical, tapering posteriorly, lacking granulation. Seventh tergum as long as combined length of eighth and ninth tergites. Seventh sternum lacking noticeable praeopercular organ. Eighth tergum slightly longer than ninth tergum. Anal segment as long as ninth tergum, with a deep V-shaped emargination on posterior margin. Supra-anal plate small. Subgenital plate scoop-shaped, apex reaching anterior area of anal segment. Gonapophyses exposed, apex reaching anterior area of anal segment. Cerci short, flattened, apices rounded and not surpassing posterior margin of anal segment. Legs sparsely covered with short bristles. Unarmed. Profemora distinctly curved basally, slightly longer than protibiae. Mesofemora slightly longer than mesotibiae, shorter than mesonotum. Tegmina oval, tapering anteriorly, posterior margin truncate, as long as pronotum. Alae short, posterior apices just reaching posterior margin of second abdominal tergum.

Coloration: General color of body brown. Legs brown with pale brown and black maculations. Tegmina brown. Alae brown with pale brown maculations.

Measurements.-

(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.

Distribution.-

Vietnam.

Notes.-

The hind legs of the adult paratypic female are lost and their measurements are insufficiently provided.

Etymology.-

It is named in honor of Jérôme Constant (Brussels, Belgium) for his discovery of this new species.