Pteranabropsis pusilla, Ingrisch, 2019

Ingrisch, Sigfrid, 2019, Review of the genus Pteranabropsis (Anostostomatidae: Anabropsinae) with description of six new species, Journal of Orthoptera Research 28 (2), pp. 107-124 : 114-115

publication ID	https://dx.doi.org/10.3897/jor.28.32182
publication LSID	lsid:zoobank.org:pub:C15EAEFB-4227-4445-B7C7-93D76E03F646
persistent identifier	https://treatment.plazi.org/id/5C6B62DA-413C-49EB-B19C-95190CED3C38
taxon LSID	lsid:zoobank.org:act:5C6B62DA-413C-49EB-B19C-95190CED3C38
treatment provided by	Journal of Orthoptera Research by Pensoft
scientific name	Pteranabropsis pusilla
status	sp. nov.

Treatment

Pteranabropsis pusilla View in CoL sp. nov. Figs 1I View Fig. 1 , 2F View Fig. 2 , 2O View Fig. 2 , 4H-I View Fig. 4 , 5H View Fig. 5 , 6N-O View Fig. 6 , 7Q-R View Fig. 7

Holotype (male). -

Vietnam: Hoang Lien NP, 22°21'N, 103°46'20"E, 1-5.vii.2013, leg. J. Constant & J. Bresseel (I.G. 32.454) - (Brussels, ISNB).

Other specimens examined. -

Same data as holotype, 1 female (paratype) (Brussels, ISNB) .

Diagnosis. -

In contrast to the other brachypterous species described in this paper, P. pusilla sp. nov. is related to P. carnarius Gorochov, 1998 with regard to the male paraproctal outgrowths, the shape of the phallus, and the shape of the female subgenital plate. It differs by smaller size, the grey semitransparent instead of dark brown hind wings, the tibial spines that are less curved and distinctly shorter, the longest tibial spines is only more than twice as long as the width of the diameter of the fore tibia instead of more than three times that width, and the metasternal lobes being narrower at tip. The paraproctal outgrowths of P. pusilla are much less widened in subapical area than in P. carnarius , have the tip obtuse instead of subacute, and carry only a minute stiffened pad at tip. The female subgenital plate of the new species is similar to that of P. carnarius but the narrow apical area is even shorter than in the latter species: less than half the length of the anterior area instead of about half or slightly more than half of that length.

Description. -

Medium to large sized species; habitus as genus. Prosternal lobes near base compressed, afterwards long spiniform, thin; mesosternal lobes in basal area wide, afterwards thin tubular with obtuse tip; metasternal lobes rather short, compressed triangular with faintly concave internal and moderately convex external margin, towards tip short-conical with obtuse tip (Fig. 2O View Fig. 2 ).

Wings in male distinct, in female slightly surpassing hind knees. Fore wings 2.4-2.6 × longer than wide (Fig. 1I View Fig. 1 ). Venation: radius with radius sector arising at beginning of apical third of tegmen; media free, two-branched, branching before mid-length; cubitus anterior three-branched, branching before mid-length and before apical third; cubitus posterior undivided; with 5 anal veins, the last one incomplete. Hind wings nearly semicircular, only slightly wider than long (about 1.35 ×).

Legs. Fore coxa with a strong spine at swollen anterior surface and a blunt tooth at ventro-posterior margin; mid coxa with a smaller spine at anterior margin. Fore femur with 1-4 and mid femur with 2-3 spines at anterior-ventral margins; in one female also with 1-2 spinules on posterior-ventral margin. Hind femur with 5-6 external and 3 internal small spines on ventral margins; hind tibia with dorsal spines on inner margin larger than on outer margin, ventral margins with few minute spinules; on both sides with 4 apical spurs, the dorsal two pairs very large, the following pair medium, the ventral-most pair small; internal spurs larger than corresponding external counterparts; ventral margin with 1 external and 3 internal spinules.

Male. Paraproctal outgrowths long, roughly cylindrical with setose and warty internal surface, in about mid-length faintly constricted, in subapical area only faintly widening and slightly curved dorsad, apex obtuse but with a tiny compressed pad at tip (Fig. 4H-I View Fig. 4 ). Subgenital plate in basal two thirds with convex surface and approaching lateral margins; disc in apical half with rounded lateral carinae, first approaching, afterwards diverging, at tip with insertion of stylus; apical margin transverse substraight, interrupted by a deep incision with rounded bottom (Fig. 2F View Fig. 2 ). Phallus membranous (Fig. 7Q-R View Fig. 7 ).

Female. Subgenital plate wide at base, triangularly narrowing posteriorly and terminating into a short spiniform apical area; basal area nearly twice as long as apical area, slightly sloping in transition zone between both areas (Fig. 5H View Fig. 5 ).

Coloration. -

General color light yellowish-brown with dark mottling. Head: face yellowish-brown to light ochre, with or without black flecks; along clypeo-frontal suture with 4 black spots; clypeus brown; below antennal scrobae and on genae with dark spots; vertex mostly black; ocelli white; antennal flagellum in more basal area black with white annulation, farther behind paler. Pronotum brown; anterior margin black, toward sides with white annulation (male) or with alternating black and yellow spots (female). Tegmen light semi-transparent with dark brown spots; hind wings semi-transparent grey, in anterior area light with brown spots.

Measurements. -

(1 male, 1 female). In mm. Body w/wings: male 47, female 43; body w/o wings: male 25, female 27; pronotum: male 8.1, female 7.8; tegmen: male 40, female 34; tegmen width: male 16.5, female 13; hind femur: male 24.5, female 25.0; ovipositor: female 23.5.

Etymology. -

The name of the new species refers to its smaller size compared to the related species P. carnarius ; from Latin pusillus, Pteranabropsis pusilla of small size.