Timomenus bicolor, Sun, Meiling, Li, Kai & Liu, Xianwei, 2016

Sun, Meiling, Li, Kai & Liu, Xianwei, 2016, Three new species of the subfamily Opisthocosmiinae from China (Dermaptera, Forficulidae), with new synonymies and combinations, Zootaxa 4109 (3), pp. 359-371 : 360-361

publication ID

https://doi.org/ 10.11646/zootaxa.4109.3.6

publication LSID

lsid:zoobank.org:pub:2C54621D-7DEC-4492-A41C-96036D85F566

DOI

https://doi.org/10.5281/zenodo.6076176

persistent identifier

https://treatment.plazi.org/id/03EFAC31-FF95-3C0B-E1B0-D9C9FEBDFC98

treatment provided by

Plazi

scientific name

Timomenus bicolor
status

sp. nov.

Timomenus bicolor View in CoL sp. nov.

( Figs. 1‒6 View FIGURES 1 ‒ 12 )

Description. Male size medium, body depressed. Head smooth, slightly swollen. Eyes prominent, length slightly shorter than genae, lateral margins rounded, sutures indistinct. Antennae long and slender, 13 joints, first joint decidedly longer than the distance between the antennal bases; third and fourth joints almost equal in length, cylindrical, but shorter than fifth. Pronotum smooth, almost as broad as long, anterior margin truncate, posterior very feebly rounded, lateral margins weakly convex, hind margin rounded; prozona slightly swollen, median sulcus distinct, with paired depressions on both sides, metazona flat. Elytra and wings fully developed. Elytra smooth, about twice as long as pronotum, external margins without ridge, anterior margins truncate. Scales of wings slightly shorter than pronotum, smooth. Legs rather short, anterior femora thick, hind tarsus with first joint almost equal to third joint, second joint strongly enlarged. Abdomen very depressed, stink-glands feeble but distinct. Last dorsal segment narrowed to the apex, above with two oblique ridges and united short, stumpy tubercles ( Fig. 1 View FIGURES 1 ‒ 12 ). Subgenital plate with some punctations, posterior margin broadly rounded ( Fig. 2 View FIGURES 1 ‒ 12 ). Pygidium not prominent, apex with short, stumpy tubercles. Forceps widely separated at base, narrowed to the apex and incurved, with strong dorsal tooth and smaller median tooth ( Fig. 3 View FIGURES 1 ‒ 12 ), sometimes the median tooth absent. Genitalia ( Figs. 4 View FIGURES 1 ‒ 12 ) with aciculiform parameres, basal vesitcle with a small pilous sclerotized plate, virga short and curved.

Female similar to male, but subgenital plate shorter ( Fig. 5 View FIGURES 1 ‒ 12 ); forceps slender, simple, nearly touching at base, internal margins crenulate ( Fig. 6 View FIGURES 1 ‒ 12 ).

Coloration. Generally yellowish. Head, first antennal joint and glandular callosities black. Scales of wing yellowish, along inner and apical margin with dark band.

Measurements. Total body: ♂ 12.5‒14.0, ♀ 14.0; forceps: ♂ 4.0‒4.5, ♀ 5.0.

Material. Holotype ♂, paratypes 1♂, 2♀♀, Chayu, Xizang, China, elev. 1600m, 2010. VIII.24‒28, collected by Bi Wen-Xuan.

Distribution. China Xizang (Tibet).

Discussion. This new species is very similar to T. oannes ( Burr, 1900) , but differs in that the forceps are distinctly flat at base, and the distance between the inner and dorsal teeth is equal to the distance between the dorsal teeth and the base.

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Dermaptera

Family

Forficulidae

Genus

Timomenus

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