Eugryllacris gandaki, 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 : 27-33

Eugryllacris gandaki sp. nov.

Figs. 5A , 7 A–B, 9D, 9I

Eugryllacris panteli poultoniana Ingrisch (1987) nec Griffini, 1909h

Material examined. Holotype (female): Nepal: Prov. Gandaki, nordöstlich Rupa Tal ( Lake Rupa ), elev. 600–700 m (28°10'N, 84°8'E), 23–24.x.1983, leg. S. Ingrisch (Bonn ZFMK).

Diagnosis. The new species is similar to E. poultoniana , but differs by the female seventh abdominal sternite that has only a very short apical projection that is not covering the base of the subgenital plate and by the shape of the subgenital plate, which has a very wide base and terminates into two long, diverging and upcurved projections while in E. poultoniana it is not widened at base and terminates into two short sub-angular lobes.

Description. Medium large species ( Fig. 9D ). Head: Face ovoid; fastigium verticis about twice as wide as scapus; ocelli indistinct; fastigium frontis separated from fastigium verticis by a very fine suture; a pair of short, weak furrows, starting at internal angle of the antennal scrobae, outline the fastigium frontis; subocular furrows present ( Fig. 5A ). Abdominal tergite three with with two rows of few minute spaced stridulatory pegs (each row 5).

Wings little surpassing hind knees ( Fig. 9D ). Tegmen: Radius with two branches, both forked near tip; media anterior fused in basal area with radius; media posterior absent; cubitus anterior forks before mid-length into two veins, CuA1 and CuA2; cubitus posterior undivided, free throughout; with 5 anal veins.

Legs: Fore coxa with a rather large spine at fore margin; fore and mid femora unarmed; fore and mid tibiae with four pairs of large, on mid tibiae comparatively short, ventral spines and one pair of smaller ventral spurs; hind femur with 7 external and 3–4 internal spines on ventral margins; hind tibia with spaced spines on both dorsal margins, ventral margins with one pre-apical spine each; with 3 apical spurs on both sides.

Coloration. General color discolored brownish (green when alive); vertex unicolored; disc of pronotum unicolored, hind margin hardly darker. Legs of general color. Face green; eyes red brown; tip of labrum brown; mandibles in basal area and internal side yellowish, towards tip black. Tegmen discolored (probably green) semitransparent with green veins; in apical half of tegmen cells with dark brown flecks; hind wing semi-transparent white to light brownish with brown veins and veinlets; cells with large dark brown spots.

Male unknown.

Female. Seventh abdominal sternite wider than long; apical margin in middle with a short conical process that fits in the base of a medial furrow of the subgenital plate. Subgenital plate at base distinctly wider than preceding sternites; after about basal third strongly constricted but before apex apico-laterally extended into two long cones with subacute tip, apical margin in between concave; central area elevated and with a deep medial furrow from base to apical margin; apical cones pointing latero-dorsad ( Figs. 7 A–B). Base of ovipositor with a flattened protuberance that fits in size the space embraced by a process of the subgenital plate ( Fig. 7A ). Ovipositor upcurved, especially in subbasal area, margins slightly and gradually narrowing towards tip; surface with lateral furrow; with apical widening; tip subacute ( Fig. 9I ).

Measurements (1 female).—body w/wings: 36; body w/o wings: 29; pronotum: 6.5; tegmen: 24; tegmen width: 9; hind femur: 17; antenna: 145; ovipositor: 16 mm.

Etymology. Named after the type locality; noun in apposition.

Figures

FIGURE 5. Genus Eugryllacris: A, E. gandaki sp. nov. female holotype; B, E. serricauda sp. nov. male holotype; C, E. crassicauda sp. nov. female paratype; D, E. crassicauda cambodiana sp. nov. female holotype; E, E. sulcata sp. nov. female holotype; F, E. malaccensis (Griffini, 1908) male; G, E. vermicauda sp. nov. female holotype; H, E. trabicauda sp. nov. female holotype; I, E. inversa sp. nov. male holotype; J, E. guomashan sp. nov. female holotype; K, E. sulcata sp. nov. female holotype.—Face (A–J), habitus dorsal view (K). Scales 5 mm (face); 10 mm (habitus).—Abbreviations: as antennal scrobus, cf clypeo-frontal suture, cl clypeus, e compound eye, ff fastigium frontis with median ocellus, fv fastigium verticis, la labrum, lo lateral ocellus, lp labial palpus, ma mandible, mo median ocellus, mp maxillary palpus, sa sub-antennal furrow, so subocular furrow, sc scapus. The arrow in H points at the spine at anterior coxa.

FIGURE 7. Genus Eugryllacris: A–B, E. gandaki sp. nov. holotype; C–D, E. crassicauda cambodiana sp. nov. holotype; E, E. serricauda sp. nov. paratype; F–G, E. crassicauda sp. nov. holotype; H, E. inversa sp. nov. paratype; I–J, E. poultoniana (Griffini, 1909).—Apical area of female abdomen with seventh abdominal sternite, subgenital plate and base of ovipositor in lateral (A, C, F, J) and ventral view (B, D–E, G–I). Scale for line drawings 5 mm. Abbreviations: 7th seventh abdominal sternite, sg subgenital plate.

FIGURE 9. Genus Eugryllacris: A, E. inversa sp. nov. male holotype; B, E. maculipennis (Stål, 1877) det. Brunner female; C, E. maculipennis specularis (Karny, 1925) female type; D, E. gandaki sp. nov. female holotype; E, E. malaccensis (Griffini, 1908) male; F, E. crassicauda cambodiana ssp. nov. holotype; G, E. vermicauda sp. nov. holotype; H, E. inversa sp. nov. paratype; I, E. gandaki sp. nov.; J, E. sulcata sp. nov. holotype; K, E. crassicauda sp. nov. paratype; L, E. serricauda sp. nov. paratype; M, E. guomashan sp. nov. holotype; N, E. poultoniana (Griffini, 1909); O, E. trabicauda sp. nov. holotype.— Habitus in dorsal view (A–E) and lateral view (F), ovipositor (G–O). Scales 10 mm; images of ovipositor adapted to scale at bottom.