Eremus basalis ( Walker, 1869 )

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 : 177

publication ID 10.11646/zootaxa.4510.1.1

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Eremus basalis ( Walker, 1869 )


Eremus basalis ( Walker, 1869) View in CoL

Figs. 60H View FIGURE 60 , 61F View FIGURE 61 (type of E. basalis )

Figs. 60 View FIGURE 60 F–G, 61C–D (type of E. nigrifrons )

Eremus nigrifrons Brunner von Wattenwyl, 1888 View in CoL

Material examined. India: Bombay— 1 female (type of E. basalis ) (London BMNH) ; India: without locality; leg. Hügel— 1 female (type of E. nigrifrons ) (Wien NHMW) .

Discussion. E. rugosifrons has the same general habitus as E. basalis . Both female types resemble each other in details, even in the shapes of the seventh abdominal sternite and the subgenital plate. The synonymy of E. nigrifrons with E. basalis is thus correct. Both taxa are with certainty only known from females. Although Brunner (1888) mentions also a male in his description of E. rugosifrons , he only gives the measurements for the female. I did not find a male in NHM Wien fitting Brunner's description that was collected before his monograph.

The situation of the male described by Karny (1929a) as (" Eremus nigrifrons Br. =? basalis Walker det. Karny") is different. It certainly represents another species that differs from both female types. It comes from a different and quite remote locality in Tamil Nadu, while the type of E. basalis is from Bombay. The subgenital plate of that male is similar to that of E. elegantulus Bol. , but has the wide basal area longer and the rounded apical lobes only half as long as the wide basal area ( Fig. 61E View FIGURE 61 ). This specimen requires a more severe re-examination to be certain about its exact taxonomic status.

Description. Medium sized species ( Figs. 60 View FIGURE 60 F–H). Head rather wide; face impressed punctate, black, ocelli yellow, clypeus and labrum light brown ( Fig. 61C View FIGURE 61 ).

Male unknown.

Female. Seventh abdominal sternite at hind margin with a short appendage in middle with strongly stiffened margins surrounding a groove, laterally apical margin of seventh sternite also grooved. Subgenital plate consisting of a roughly triangular central part with convex margins and obtuse tip and a shorter conical lateral part at both sides ( Figs. 61D, F View FIGURE 61 ). Ovipositor elongate, slightly curved throughout; tip unmodified, acute ( Figs. 60F, H View FIGURE 60 ).


Naturhistorisches Museum, Wien














Eremus basalis ( Walker, 1869 )

Ingrisch, Sigfrid 2018

Eremus nigrifrons

Brunner von Wattenwyl 1888
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