Eugryllacris sulcata, 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 : 40

publication ID 10.11646/zootaxa.4510.1.1

publication LSID


persistent identifier

treatment provided by


scientific name

Eugryllacris sulcata

sp. nov.

Eugryllacris sulcata View in CoL sp. nov.

Figs. 5E, 5K View FIGURE 5 , 8 View FIGURE 8 E–F, 9J

Material examined. East Malaysia: Sabah, Mt. Kinabalu, Poring, elev. 500–700 m (6°5'N, 116°33'E), 1– 31.vii.1992, leg. K. Riede— 1 female (holotype) (Bonn ZFMK).

Diagnosis. E. sulcata can be recognized by the deeply furrowed face ( Fig. 5E View FIGURE 5 ), but especially characteristic are the shapes of the female seventh abdominal sternite and the subgenital plate ( Figs. 8 View FIGURE 8 E–F). The seventh sternite is rounded disc-shaped except for the truncate basal margin, flat and without apical projection; also the subgenital plate is flat with a rather long membranous base, afterwards triangular but with truncate apical margin. This situation resembles somewhat the condition in Philippine Eugryllacris species as E. inversa sp. nov. and E. maculipennis laticauda ( Karny, 1925a) . Both species also have a triangular subgenital plate with truncate tip and the seventh sternite without a medial projection with apex simply rounded in E. sulcata instead of slightly bilobate in E. inversa .

Description. Large species ( Fig. 5K View FIGURE 5 ). Head: Face wide ovoid; fastigium verticis about twice as wide as scapus; ocelli visible, especially median ocellus, but not very striking; fastigium frontis separated from fastigium verticis by a very fine suture; a pair of very strong sub-antennal furrows, starting at internal angle of antennal scrobae, separates central area of face from lateral areas and fuse ventrally with clypeo-frontal suture; clypeo-frontal suture interrupted in middle; subocular furrows also very distinct; clypeus with a fine transverse furrow below about basal third ( Fig. 5E View FIGURE 5 ). Abdominal tergites two and three with few minute stridulatory pegs.

Wings reaching or little surpassing middle of stretched hind tibiae ( Fig. 5K View FIGURE 5 ). 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 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 8– 10 external and 5 internal spines on ventral margins.

Coloration. General color green when alive; vertex unicolored; disc of pronotum unicolored, hind margin hardly darker. Legs of general color. Face almost unicolored, probably green when alive; clypeo-frontal furrows black connected by a dark brown line. Tegmen semi-transparent with green veins; area behind radius faintly infumate in basal half to two thirds; hind wing semi-transparent with green or brown veins and veinlets; cells with large dark brown spots.

Male unknown.

Female. Seventh abdominal sternite with apical margin as whole prolonged to cover base of subgenital plate; roughly appearing as a round disc with truncate base ( Figs. 8 View FIGURE 8 E–F). Subgenital plate in about about basal third membranous except for sclerotised margins; with strongly approaching lateral margins; apex subtruncate, faintly concave ( Fig. 8F View FIGURE 8 ). Base of ovipositor with a small sclerite before base of ventral valves. Ovipositor of medium length, distinctly but not strongly curved dorsad, margins slightly and gradually narrowing towards tip; dorsal margin with a slight expansion before tip ( Fig. 9J View FIGURE 9 ).

Measurements (1 female).—body w/wings: 53; body w/o wings: 40; pronotum: 8.5; tegmen: 40; tegmen width: 19; hind femur: 19; antenna: 125; ovipositor: 17 mm.

Etymology. The new species is named for the deeply furrowed face; from Latin sulcus (furrow).

GBIF Dataset (for parent article) Darwin Core Archive (for parent article) View in SIBiLS Plain XML RDF