Ancistrogera extraordinaria Karny, 1937

Ingrisch, Sigfrid, 2018, New taxa and records of Gryllacrididae (Orthoptera, Stenopelmatoidea) from South East Asia and New Guinea with a key to the genera, Zootaxa 4510 (1), pp. 1-278 : 109

Ancistrogera extraordinaria Karny, 1937

Figs. 36 A–C

Material examined. Indonesia: Maluku, Morotai, Pilowo, Goegoeti (Guguti), (2°6'3.63''N, 128°15'36.83''E), 1.i.– 31.xii.1926, leg. Erie— 1 male (topotype) compared by H. Karny with the holotype (Wien NHMW) .

Description. Small but not slender species.

Tegmen ( Fig. 36A ): Radius with two branches, both forked near tip; media anterior free from base but in basal area fused with cubitus anterior and releases CuA in basal quarter, thereafter it forks behind basal third into MA and MP, the latter then divides into MP1 and MP2; cubitus anterior fused in basal area with MA; cubitus posterior free at base, later fuses three times temporarily with Analis 1 and divides again; with 3–4 anal veins.

Legs: hind tibia on internal margin with a very long and curved subbasal spine, on external margin with two moderately prolonged spines ( Fig. 36A arrow); ventral margins with a not darkened subapical spine; with three apical spurs at each side.

Coloration. General color uniformly yellowish brown; head with black markings. Tegmen semi-transparent yellowish; hind wing semi-transparent.

Male. Eighth abdominal tergite of normal length. Ninth abdominal tergite roughly globular; posterior margin with wide depression in middle; ventro-apical margin with a pair of short obtuse black teeth. Subgenital plate rather short, wider than long; apical margin oblique on both sides, concave in middle; styli short and stout.

Female unknown.

Measurements from Karny (1937) (1 male).—body w/o wings: 20; pronotum: 4.7; tegmen: 17; hind femur: 14 mm.

Discussion. The species can be recognized by the long curved spine on the dorsal internal margin of the hind tibia, while in the only other known species of the genus, A. particularis , there is a long curved spine on both dorsal margins of the hind tibia.

Figures

FIGURE 36. Genus Ancistrogera: A–C, A. extraordinaria Karny, 1937 male; D–F, A. particularis Brunner, 1898 female holotype.—Habitus dorsal view (A), face (B), male abdominal apex in ventral view (C), habitus lateral view (D), ovipositor (E), ventral hind part of female abdomen with seventh sternite and subgenital plate (F). The arrows mark the long spines of the hind tibia.