Pteranabropsis cuspis, 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 : 111

Pteranabropsis cuspis sp. nov. Figs 1B , 2B , 2H , 3E-I , 6F-G , 7I-J

Holotype (male). -

Vietnam: Hoa Binh Prov., Ngo Luong Nat. Res., 20°26'16"N, 105°20'15"E, 25-30.vii.2016, leg. J. Constant & J. Bresseel (I.G.: 33.282 GTI project) - (Brussels, ISNB).

Other specimens examined. -

Same data as holotype, 2 males (paratypes) (Brussels, ISNB) .

Diagnosis. -

The new species is similar to P. angusta sp. nov. but of more robust habitus. Tegmina and hind wings are of similarly shortened shape but slightly more reduced in P. cuspis sp. nov. Diagnostic for the new species is the shape of the paraproctal outgrowths, which resemble those of P. carli (Griffini, 1911) but have the upcurved apical area longer and narrower than in P. carli or in P. angusta and carry at nearly acute tip a very small, stiffened pad not a stiffened dorsal rim as in P. carli and not pointing apicad as in P. angusta .

Description. -

Medium to large sized species; habitus as genus. Prosternal lobes near base compressed, afterwards long spiniform, thin; mesosternal lobes in basal area moderately wide, afterwards elongate conical to nearly cylindrical with obtuse tip; metasternal lobes compressed, with concave internal and convex external margins; gradually passing over into conical, nearly sub-cylindrical, apical area with obtuse tip (Fig. 2H ).

Wings not reaching hind knees (Fig. 1B ). Fore wings 2.9 × longer than wide. Venation: radius releases radius sector between middle and apical third of tegmen; media and cubitus anterior both with two branches each that fork from their undivided bases behind basal third of tegmen; cubitus posterior undivided; with four complete anal veins. Hind wings cycloid, distinctly wider than long (1.75 ×).

Legs. Fore coxa with a strong spine at swollen anterior surface; mid coxa with a smaller spine at anterior margin. Fore femur with 1-3 small spines and mid femur with 0-1 spine at anterior-ventral margins. Hind femora with 3-6 external and 3-6 internal small spines on ventral margins; hind tibiae 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 2 external and 0-1 internal spinules.

Male. Subgenital plate with lateral margins slightly concave and narrowing posteriorly; apical margin subtruncate, both sides with a long substraight stylus (Fig. 2B ). Paraproctal outgrowths with a rather long oblique-triangular projection from dorso-apical margin that carry at nearly acute tip a very small, stiffened pad; apical margin of outgrowth concave, ventro-apical angle rounded (Fig. 3E-I ). Phallus membranous, shaped as in Fig. 7I-J .

Female unknown.

Coloration. -

Different shades of brown, faintly spotted; head dark brown mixed with light and with black spots; pronotum and hind femora reddish-brown; hind knees dorsally very light brown; hind tibiae yellowish-brown. Face in different shades of brown, mixed with pale and black spots; pronotum and hind femora reddish-brown; hind knees dorsally ivory yellowish; hind tibiae yellowish-brown. Tegmen semi-transparent with black spots. Hind wings greyish, semi-transparent.

Measurements. -

(3 males). In mm. Body w/wings: 45-47; body w/o wings: 35; pronotum: 9.7; tegmen: 33-38; tegmen width: 13; hind femur: 34; antenna: 80-90.

Etymology. -

The new species is named for its narrow acute tip of the paraproctal outgrowths; from Latin Pteranabropsis cuspis spine, thorn; noun in apposition.

Figures

Fig. 1. Habitus dorsal view of Pteranabropsis species. A. P. carli (Griffini, 1911) female; B. P. cuspis sp. nov. male; C-E. P. copia sp. nov. male (C), female from Copia (D), and female from Hoang Lien (E); F. P. angusta sp. nov. male; G. P. bavi sp. nov. female; H. P. guadun sp. nov. female; I. P. pusilla sp. nov. male; J. P. carnarius Gorochov, 1998 male. Scales 10 mm.

Fig. 2. A-G. Male subgenital plate; H. Thoracic sternites; I-P. Metasternum of Pteranabropsis species: P. carli (Griffini, 1911) (A, J); P. cuspis sp. nov. (B, H); P. copia from type locality (C, M); P. angusta sp. nov. (D, L); P. carnarius Gorochov, 1998 (E, N); P. pusilla sp. nov. (F, O); P. guadun sp. nov. (G, P); P. copia from Hoang Lien (I); P. bavi sp. nov. (K). Abbreviations: c 1 - fore coxa, c 2 - mid coxa, c 3 - hind coxa, s 1 - prosternum, s 2 - mesosternum, s 3 - metasternum, th - throat with lateral hemispherical sclerites and pair of papillae, pr - underside of pronotum. Scales 1 mm.

Fig. 3. Male paraproctal outgrowths in full or only apical area in lateral (A-D, F-G, J-K), apical (E, I, L, M), ventro-apical (H), and dorsal view (N). A-D. P. carli (Griffini, 1911) four males from Tam Dao (A-B), Cuc Phuong (C), and Ngo Luong (D); E-I. P. cuspis sp. nov. two males from Ngo Luong; J-N. P. angusta sp. nov. two males from Cuc Phuong. Scales 1 mm.

Fig. 6. A-E. P. carli (Griffini, 1911) male from Ngo Luong (A-D) and Tam Dao (E); F-G. P. cuspis sp. nov. male; H-I. P. angusta sp. nov. male; J-M. P. carnarius Gorochov, 1998 male (J) and female from Tam Tao (K-L) and from BaVi (M); N-O. P. pusilla sp. nov. female; P-R. P. guadun sp. nov. female; S-V. P. copia sp. nov. female (S-T) and male (U-V) from Copia. - Fore tibia external side (A, F, H, K, N, P, S) and internal side (B, E, G, I-J, L, O, Q, T); thorax in lateral view (C), prothoracic spiracle (D, M, R, V). Abbreviations: c 1 - anterior coxa, ms - mesothoracic pleurites, mt - metathoracic pleurites, s 1 - s 3 - first, second and third thoracic spiracles. Scales for legs and body, 5 mm; for tympana and spiracles, 1 mm.

Fig. 7. Male phallic complex of A-F. P. carli (Griffini, 1911) from Tam Dao (A-B), Cuc Phuong (C-D) and Ngo Luong (E-F); G-H. P. copia sp. nov.; I-J. P. cuspis sp. nov.; K-N. P. angusta sp. nov.; O-P. P. carnarius from Tam Tao; Q-R. P. pusilla sp. nov.; S-T. P. guadun sp. nov. in dorsal (A, C, F, G, I, L, M, O, Q, S) and in ventral (D, E, H, J, K, N, O, R, T) view, or in dorsal view with only dorsal lobes flipped proximad, ventral lobe distad (B). Scales 1 mm (all images).