Asarcogryllacris (Asarcogryllacris) macilenta ardjunae 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 : 119-122

Asarcogryllacris (Asarcogryllacris) macilenta ardjunae Karny, 1937

Figs. 40 A–B, 41A–D, 102A–B

Material examined. Indonesia: Java, West Java, Cibodas [Tjibodas], elev. 1400–1500 m (6°43'S, 107°0'E), 31.iii.– 1.iv.1995, leg. S. Ingrisch— 1 female, 1 male (Bonn ZFMK) ; West Java, same locality, 25–26.iii.1993, leg. S. Ingrisch— 1 male (Bonn ZFMK) .

Discussion. This species was so far only known from the holotype, a female. The specimens at hand have slightly shorter tegmina, hind femora and ovipositor than the values given for the holotype, but otherwise agree with the scanty diagnosis given by Karny (1937). The holotype was collected at Gunung Papandajan [7°19'S, 107°44'E], thus roughly 110 km beeline SEE of Cibodas.

Description. Rather small species. Head: Face narrow ovoid; fastigium verticis little wider than scapus; ocelli visible but little distinct; fastigium frontis separated from fastigium verticis by a very fine suture; subocular furrows weak; transient zone between frons and genae with a faint transverse furrow in middle ( Fig. 40B ). Abdominal tergites two and three each with two rows of stridulatory pegs (5–6, 11–13; 17, 19; n = 1 male, 1 female).

Wings little surpassing hind knees ( Fig. 40A ). Tegmen: Radius with two branches, both forked near tip; media anterior fused in basal area with radius; media posterior also fused in basal area with radius or arises in middle between radius and cubitus anterior from a fusion of short oblique branches from both veins; thus cubitus anterior either single branched and free from base or with a common base with media posterior; cubitus posterior undivided, free throughout; with 3 anal veins.

Legs: Fore coxa with a spine at fore margin; fore and mid femora unarmed; fore and mid tibiae with four pairs of large ventral spines and one pair of smaller ventral spurs; hind femur with 5–8 external and 6–12 internal spines on ventral margins; hind tibia with spaced spines on both dorsal margins, ventral margins with one pre-apical spine; with 3 apical spurs on both sides.

Coloration. General color brownish; head reddish brown with 4 indistinct dark brown bands on vertex; pronotum light brown with dark brown rim and two lateral dark brown bands on disc; legs light medium brown with some indistinct darker spots in genicular area. Face brownish with some indistinct lighter and darker patterns. Tegmen semi-transparent white, towards base darkened, in area behind subcosta densely covered with very short brown hairs, giving the area a dark appearance; veins dark brown, only costa and subcosta light yellow; hind wing semi-transparent white, a small spot at anterior apical end of wing covered with short brown hairs; veins and veinlets brown.

Male. Eighth abdominal tergite elongate. Ninth abdominal tergite globular, at end with a pair of pincers-shaped projection ( Fig. 41C ). Tenth abdominal tergite reduced to a narrow transverse band sub-interrupted in middle and separated from ninth tergite and from paraproctes by narrow membranous zones. Paraproctes forming large vaulted plates with upper area bent dorsad, below bent area provided with a rather large black horn with subacute tip, the plates from both sides separated by a narrow membranous zone. Subgenital plate wider than long, with triangular membranous area from base; lateral margins convex; apical margin faintly bilobate; styli shorter than subgenital plate, arising from apico-lateral angles ( Fig. 41D ).

Female. In the membranous zone between seventh abdominal sternite and subgenital plate with a vaulted glossy plate narrower than sternite, this plate is followed by a constricted membranous area, this area also elevated but less so than preceding plate and provided with a shallow groove on both sides. Subgenital plate simple, bent ventrad in preparation, apical margin convex ( Fig. 41B ). Base of ovipositor normal. Ovipositor short, compressed, in subbasal area curved; tip obtuse ( Fig. 41A ).

Measurements (2 males, 1 female).—body w/wings: male 23, female 22; body w/o wings: male 20.5–23.0, female 22; pronotum: male 4, female 3.8; tegmen: male 15.5, female 15; tegmen width: male 4.2; hind femur: male 11, female 11.5; antenna: male 130, female 120; ovipositor: female 7.5 mm.

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.