Eremus rugosifrons Brunner von Wattenwyl, 1888

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 : 178-180

Eremus rugosifrons Brunner von Wattenwyl, 1888

Figs. 60 C–E, 61L–N

Material examined. China: leg. Boucard— 1 male (type) (Wien NHMW) ; without locality label, leg. Felder— 1 female (det. Karny) (Wien NHMW) .

Discussion. The female is included here with some doubt as the locality is unknown and also the locality of the holotype is rather imprecise. Thus one cannot be certain that they really represent the same species. Also the female from Sikkim mentioned by Karny (1929a) may represent a different species.

Description. Medium sized species ( Fig. 60C ). Head: Face broad avoid, strongly rugose; fastigium verticis more than twice as wide as scapus, bordered laterally in frontal view by curved carinae; ocelli indistinct (in female lateral ocelli contrasting yellow); fastigium frontis separated from fastigium verticis by a fine curved suture; subocular furrows little distinct ( Fig. 61L ).

Wings absent ( Figs. 60C, E ).

Legs: Fore coxa with a spine at fore margin; fore and mid femora unarmed; fore and mid tibiae with four pairs of not very long spines and one pair of apical spurs on ventral margins; hind tibia on ventral margins without pre-apical spine.

Coloration. General color brown, thorax with few black spots; head mainly black; spines on hind femur and hind tibiae black. Face black; lower parts of clypeus and labrum of lighter color (in male also lateral carinae of fastigium).

Male. Eighth abdominal tergite brown; prolonged and towards end globular. Ninth abdominal tergite oriented ventrally compared to eighth tergite; with down-curved and approaching lateral margins; recurved apical margin in middle with a pair of small black spines. Subgenital plate wider than long with medial furrow; lateral margins concave, apical margin convex; small styli inserted at lateral angles ( Fig. 61M ).

Female. Seventh abdominal sternite conically narrowing backward followed by an oval expansion at end, the latter with a pit; lateral areas membranous. Subgenital plate semi-oval with membranous base ( Fig. 61N ). Ovipositor elongate and little curved; tip more strongly upcurved ( Fig. 60E ).

Measurements (1 male after Brunner 1888, 1 female after Karny 1929a).—body w/o wings: male 31, female 32; pronotum: male 7.5, female 7.3; hind femur: male 19, female 19.3; ovipositor: female 20.1 mm.

Figures

FIGURE 60. Genus Eremus: A–B, E. tigris sp. nov. male paratype (A) and holotype (B); C–E, E. r. rugosifrons Brunner, 1888 male type BrW9787 (C–D) and female (E); F–G, E. nigrifrons Brunner, 1888 female type; H, E. b. basalis (Walker, 1869) female holotype; I–J, E. geniculatus Brunner, 1888 female type BrW17.124.—Lateral view (A, C, E–F, H–I), dorsal view (B, D, G, J). Scale 10 mm (Brunner's types not to scale).

FIGURE 61. Genus Eremus: A–B, E. tigris sp. nov. male paratype (A) and holotype (B); C–D, E. nigrifrons Brunner, 1888 female type; E, E. sp. male ("Eremus nigrifrons Br. =? basalis Walker" det. Karny); F, E. b. basalis (Walker, 1869) female holotype; G–K, E. geniculatus Brunner, 1888 female paratype (G–H), female holotype (I) and male paratype (J–K); L–N, E. r. rugosifrons Brunner, 1888 male type BrW9787 (L–M) and female (N).—Face (A, C, G, L), male abdominal apex in ventroapical view (B, E, K, M), end of female abdomen with seventh sternite, subgenital plate and base of ovipositor (D, F, H–I, N), habitus lateral view (J).