Matskási István (szerk.): A Magyar Természettudományi Múzeum évkönyve 101. (Budapest 2009)

Makranczy, Gy.: The genus Thinodromus Kraatz, 1857 in West-Central Africa (Coleoptera, Staphylinidae: Oxytelinae)

The genus Thinodromus in West-Central Africa ( Coleoptera) 37 For the illustrations permanent preparations were made in Euparal mounting medium on plastic cards pinned with the specimens. Drawing was done with either Olympus BH-2 and Olympus BH-1 or a Jenalab (Carl Zeiss, Jena) compound microscopes and drawing tubes (camera lucida). Descriptions and measurements are made with Wild M 8 and Leica MZ 125 stereoscopic microscopes. The drawings of the antennae are based on SEM images taken of uncoated specimens with a Hitachi S-2600 N scanning electron microscope. DESCRIPTIONS OF THE SPECIES As explained before, the here presented review deals with an amonunt of species that is unquestionnably a very small fragment of the African fauna. The approach is, therefore, a detailed description of the features found to be useful, with only comparative notes. A key - at this point - was thought to be useless, as there are probably a vast number of other undescribed species in the area. It is expected that at least every other sampled specimen belongs to yet unnamed species. The descriptions usually mention the bionomics, this is also pointless here, as it is almost totally unknown. Some specimens were collected at light, and for one species the old label reads "bank of stream" that is probably true for all the species herein. They might live at stream or riverbanks, in plant debris or under stones. A special note is necessary about the length of the antennomeres. The data given with the descriptions refer to male specimens (if not otherwise noted). Females in most Thinodromus species groups often have noticeably shorter antennomeres. The deviation is usually not great (5-10%), and in those species where the antennae are more elongate, the difference between sexes is generally more apparent. The situation is illustrated for one species where there is a great deviation, T. gabonicus sp. n. (Figs 2-3) and another where the difference between sexes is hardly noticeable, T. mateui sp. n. (Figs 4-5). Codes used for the measurements - AW - maximum width of abdomen; BL = approximate body length; EL = length of eye; FL = forebody length (combined length of head, pronotum and elytra); HL = head length from front margin of clypeus to the beginning of neck; HW = head width with eyes; PL = length of pronotum in the middle-line; PW = maximum width of pronotum; SC = length of elytra from hind apex of scutellum; SL = length of elytra from shoulder; SW = approximate width of shoulders; TL = length of temple; TW = head width at temples. All measured from dorsal view. Thinodromus decorsei (CAMERON, 1948) (Figs 6-9, 25-26, 65) Studied type material - Lectotype (male): "Co-type [curator label], Museum Paris, Moyen Chari, Fort Archambault [= Sarh, 9°09' N, 18°23' E], Boungoul (Ba-Karé), Mission Chari-Tchad, Dr. J. Decorse, 1904; Avril; Trog, decorsei Cotype Cam.; M. Cameron Annls hist.-nat. Mus. natn. hung. 101, 2009