S. Mahunka szerk.: Folia Entomologica Hungarica 55. (Budapest, 1994)

FOLIA ENTOMOLOGICA HUNGARICA ROVARTANI KÖZLEMÉNYEK LV 1994 p. 37-39 A new species of the genus Trox (Coleoptera: Scarabaeoidea) L. Ádám A new species of the genus Trox (Coleoptera: Scarabaeoidea). - Trox cricetulus sp. n. is described and distinguished from the closely related species, T. hispidus (Pontoppidan, 1763) and T. niger Rossi, 1792. Trox cricetulus sp. n. In general appearance similar to the other Trox species of the hispidus speciesgroup, particularly to T. hispidus (Pontoppidan, 1763) and to T. niger Rossi, 1792. Body elongate oval, strongly convex, moderately broadening posteriorly; surface finely alutaceous; uniformly black in colour, antennae and palpi light reddish brown, tarsi reddish brown. Dorsal and ventral surface as well as pronotal and elytral margins with yellowish brown setae. Surface of head slightly scabrous and uneven, with umbilicate setiferous punctures. Anterior clypeal margin triangular, obtusely angulate at the middle. Frontal tubercles flat and indistinct. Pronotum transverse quadrangular, moderately, arcuately narrowing anteriorly. Surface with umbilicate setiferous punctures. Discal ridges moderately prominent. Median ridges distinctly raised. Median depression rather wide, distinctly impressed over almost its entire length, except its narrower and shallower median part. Lateral ridges and furrows obsolete. Lateral margins distinctly sinuate near posterior angle. Marginal setae short, flat and broad, foliaceous, rounded apically. Posterior angles acute. Elytra strongly convex, moderately broadening posteriorly. Humerus distinctly dentate, humeral callus prominent, preapical callus distinct. Lateral margins finely denticulate. Marginal setae slightly clavate, rounded apically. Intervals with a row of oblong oval, flat or slightly convex tubercles. Tubercles of odd intervals with one, more or less regular row of 2-8 (most often of 3-6) setiferous punctures. Size of largest tubercles of even intervals about one-quarter, one-third or half the size of tubercles of odd intervals, with 1 or 2 (rarely 3) setiferous punctures. Elytral striae slightly undulate; punctures slightly impressed, intervals between punctures almost flat or slightly convex. Wings normally developed. Scutellum small, narrowly triangular, distinctly longer than wide, rounded apically, surface finely alutaceous. Length: 9.2 mm. Male genitalia: Fig. 1.