Euscyrtus Guerin-Meneville, 1844

Meena, Ashok Kumar, Swaminathan, Rajamani & Swaminathan, Tatiana, 2020, Some lesser known silent crickets (Orthoptera: Gryllidae: Euscyrtinae) from the hilly tracts of India, Zootaxa 4881 (3), pp. 559-572 : 560

Euscyrtus Guerin-Meneville, 1844

Guerin-Meneville, 1844. Icon. R. anim. Ins: 334. Gorochov, 1988. Trudy Zool. Inst., Akad. Nauk SSSR, Leningrad 178:3–31.

Diagnosis (Guerin-Meneville, 1844): Body slender, long; vertex produced, frontal rostrum short; large head, with very prominent eyes and three small, inconspicuous ocelli placed on the protruding part of the forehead. Antennae are very fine, twice as long as the body, with the first segment large. Medium sized palpi, the maxillae of four segments almost equal in length, the 2 nd and 3 rd a little thicker, the last a little longer, elongated and oval. Pronotum is short, wider than long. Tegmina shorter than the abdomen, with longitudinal outer ribs, dorsally reticulated, reaching a little beyond half the abdomen in both sexes, tegmina twice as long as wide, rounded at the apices; males with long hind wings. Ovipositor almost as long as the body, raised and having its tip curved below. Hind legs are very large, finely serrated on their outer sides and having long spines from the middle to the end. Tarsi of three segments, terminated by two large serrated hooks in combs. Claw inner margin has 4 to 5 teeth.

Composition: The generic name Euscyrtus was established by Guerin-Meneville, 1844 for the first time with Euscyrtus bivittatus Guerin-Meneville, 1844 as the type species by original designation. At present genus Euscyrtus is divided into two subgenera, namely Euscyrtus Guerin-Meneville, 1844 and Osus Gorochov, 1987 ; according to Gorochov (1987) external morphological differences are not significant; however, the main difference is in the male genitalic structure. The genus Euscyrtus has about 21 known species all over the world ( Cigliano et al., 2020).