Asarcogryllacris (Asarcogryllacris) brevis, 2018

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 : 122-123

Asarcogryllacris (Asarcogryllacris) brevis sp. nov.

Figs. 40 G–I, 41I–K, 102F

Material examined. Holotype (female): Indonesia: Java, West Java, Cibodas [Tjibodas], elev. 1400–1500 m (6°43'S, 107°0'E), 31.iii.–1.iv.1995, leg. S. Ingrisch—(Bonn ZFMK).

Diagnosis. The new species differs from all other species of the genus, for which this characters is known, by the pair of very short posterior projections of the female seventh abdominal sternite ( Fig. 41K ).

Description. Small to medium sized species. Head: Face not particularly large; in frontal view roughly oval; forehead nearly smooth; fastigium verticis distinctly wider than scapus; median and lateral ocelli small, little distinct ( Fig. 40H ). Abdominal tergites two and three each with two rows of stridulatory pegs (4, 12; 15, 18; n = 1 female; Fig. 40I ).

Wings little surpassing apex of abdomen ( Fig. 40G ). Tegmen widest in basal quarter: Radius with two branches, both forked near tip; media anterior free from base, undivided; cubitus anterior forks into two veins near end of basal third; cubitus posterior undivided, free throughout; with 3 anal veins and an incomplete fourth vein.

Legs: Fore coxa with small spine at fore margin; fore and mid femora unarmed; fore and mid tibiae with 4 pairs of rather short ventral spines and 1 pair of smaller ventral spurs [the first pair very short; left mid leg missing]; hind femur with 7 external and 8–9 internal spines on ventral margins, little increasing in size towards posterior end; hind tibia with spaced, comparatively short spines on both dorsal margins, ventral margins with one pre-apical spine each; with 3 apical spurs on both sides.

Coloration. General color uniformly medium brown, underside lighter; flagellum of antennae dark brown ( Fig. 102F ). Face yellowish brown, compound eyes dark brown, mandibles reddish brown, palpi yellowish. Tegmen semitransparent yellowish, veins yellowish; hind wing transparent with yellowish veins.

Male unknown.

Female. Seventh abdominal sternite rather unmodified, apical margin with a pair of very short convex projections. Subgenital plate roughly semi-circular, membranous at base ( Figs. 41 J–K). Base of ovipositor with two small sclerites on both sides of very base. Ovipositor elongate, strongly curved behind base, afterwards slightly curved dorsad; longer than hind femur; tip obtuse ( Fig. 41I ).

Measurements (1 female).—body w/wings: 26; body w/o wings: 23; pronotum: 3; tegmen: 19; tegmen width: 5; hind femur: 10; ovipositor: 12 mm.

Etymology. The new species is named for the short posterior projections of the female seventh abdominal sternite; from Latin brevis (short).

Figures

FIGURE 40. Genus Asarcogryllacris: A–B, A. m. ardjunae Karny, 1937 male; C, A. parapat sp. nov. female holotype; D–F, A. robusta sp. nov. female holotype; G–I, A. brevis sp. nov. female holotype.—Habitus dorsal view (A, C, D, G), face (B, H, F), apical area of left hind tibia (E), stridulatory pegs on 2nd and third abdominal tergites (front is left, I). Scale 10 mm (A, C, D, G with equal magnification).

FIGURE 41. Genus Asarcogryllacris: A–D, A. m. ardjunae Karny, 1937; E–H, A. parapat sp. nov.; I–K, A. brevis sp. nov.; L– N, A. robusta sp. nov.—Habitus female in lateral view (A, E), female end of abdomen in ventral view (B, F, J–K, M) and in lateral view (G–H, N ventral side is left!), ovipositor (I, L), male abdominal apex in apical (C) and lateral view (D). Scales 10 mm.

FIGURE 102. A, Asarcogryllacris (Asarcogryllacris) macilenta ardjunae Karny, 1937 male; B, do. female; C, Asarcogryllacris (Asarcogryllacris) parapat sp. nov. female; D, Gryllacris signifera signifera (Stoll, 1813) male; E, do. female; F, Asarcogryllacris (Asarcogryllacris) brevis sp. nov. female holotype; G, Otidiogryllacris auriculata auriculata (Krauss, 1902) male; H, do. female; I, Caustogryllacris podocausta podocausta (Haan, 1842) male; J, Eremus tigris sp. nov. male.