S. Mahunka szerk.: Folia Entomologica Hungarica 31/2. (Budapest, 1978)

FOLIA ENTOMOLOGICA HUNGARICA ROVARTANI KÖZLEMÉNYEK (SERIES NOVA) XXXI. 2 1978 p. 227-231 A revision of the genus Ctenisolabis Verhoeff, 1902 (Dermaptera: Carcinophoridae) By H. STEINMANN (Received November 15, 1977) Abstract: After a zoogeographical survey of the circumtropically distributed species of the genus Ctenisolabis Verhoeff, 1902 was it possible to revise systematically this particular group. The present contribution summarizes thti findings of a comparative morphological study of the male genital apparatus. The description of two new species: Ctenisolabis mahunkai sp. nov.

, and C. pusilla sp. nov. is given. On the basis of comparative morphological study of the male's genital apparatus first I revised them supraspecifically then specifically. The generic grouping of the members of the Carcinophoridae was not possible on the basis of external morphological features, sine the characteristics well applicable in other families extant on the head, thorax or abdomen here were obliterated, and the situation was further aggrevated that besides the macropterous and micropterous forms entirely apterous forms occurred. Accordingly, the only reliable feature remained was the genital apparatus of the males in this extremely versatile group of species. Ctenisolabis Verhoeff, 1902 Ctenisolabis Verhoeff, 1902, Sitz. Ges. Naturf. Fr. Berlin, p. 11. - Species typica: Ctenisolabis togoensis Verhoeff, 1902.- Ctenisolabis Verhoeff, 1902 = Isolabis Verhoeff, 1902; Popham and Brindle, 1966, Entomologist, 99: 245. Body similar to Metisolabis Burr, 1910 species, but differs in the globular, antennái joints. Its 3rd joint twice longer as broad, 4th about as long as wide. Eyes large, elliptical situating near posterior angles of head. Tegmina absent, but mesonotum with lateral carinae or keels; metanotum transverse, abdomen oval, cylindrical; generally punctured dorsally. Forceps simple, tapering, contiguous or subcontiguous, Male genitalia broad, external parameres shorter, than of Metisolabis. Distribution: Africa, Central America and Oriental Region. Identification key to the species 1 (2) African species. Antennae 13-jointed. Body mat, brown, legs yeUowish brown togoensis Verhoeff, 1902 2 (1) Not African species. 3 (8) Central American species. Antennae 12- or 13-jointed.