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) 55 Taxonomic note - Thinodromus nigerius was described by GILDENKOV (2000) from Nigeria (Ibadan, 07°28' N, 04°34' E), based on a single female specimen. The description is supplemented by a forebody and an antenna sketch and a drawing of the spermatheca. The spermatheca has no diagnostic value in Thinodromus, at least not between closely related species. Almost the same goes for the description of the antenna, it is different between sexes and also displays a great extent of intraspecific variability. There are too many undescribed Thinodromus species and external similarities between taxa are so great that only unique, character-rich features enable safe distinction of them. On my close personal examination of the holotype specimen in London (2000) it turned out that the tip of the abdomen had been removed in the process of preparation and is now lost. Therefore the more distinctive ringstructure cannot be illustrated for this species. In conclusion, the original description of the taxon is missing any information with a serious diagnostic value, therefore the use of the name here should not be considered as being without doubt. Thinodromus odzalensis sp. n. (Figs 50-52, 57-59) Type material - Holotype (male): "Odzala, Congo, [Congo: Cuvette, Odzala, 00°31' N, 14°39' E, X.1963,] Octobre, Museum Paris, Mission A. Descarpentries Et A. Villiers 1963-1964" (coll. générale, MNHN). Description - Measurements (in mm, n = 1 ): HW = 0.64; TW = 0.48; PW = 0.72; SW = 0.92; AW = 0.90; HL = 0.36; EL = 0.26; TL = 0.00; PL = 0.54; SL = 0.84; SC = 0.80; BL = 3.60; FL = 1.80 mm. - Colour. Body moderately shining, very dark reddish-brown, almost black. Supraantennal processes lighter, yellowish. Legs light brown, with exception of tibiae which are darker brown. - Shape and sculpture. Head slightly transverse, large eyes occupy the sides, no temples. Antennái segments ovoid, antennomeres 4-5 1.26-1.45x longer than broad, antennomeres 9-10 1.09-1.23x broader than long. Pronotum broadly rounded on all sides, there is no concavity anywhere. Reflexed lateral margin thin, posteriorly almost unnoticeably fine, anteriorly absent. Horseshoe-like impression slightly W-shaped, moderately deep, the dual impression in the middle and the anterio-medial one almost inperceptably shallow. Elytra together slightly (1.21 x) broader than long, dilating towards apex, elytron has a shallow and small impressed area in the anterior half of disc. - Punctation and microsculpture. Head punctation composed of very fine, shallow punctures, sizes about equal to interspaces. Pronotal punctation with very fine but variously sized shallow punctures, sizes are generally smaller than interspaces. Elytral punctation slightly stronger, slightly deeper, punctures about equal to interspaces. Abdomen finely punctured at base of terga, towards apex punctation becomes sparser. No apparent microsculpture anywhere on the body except posterior pronotal corners, where punctation diminishes into coriaceous ground sculpture. - Pubescence. Setation rather dense and of the two-sized pattern. Part of hairs very thin and small, more or less depressed, others long, stronger, sernierect. The two different types are most apparent on the abdominal terga and on the elytra. Annls hist.-nat. Mus. natn. hung. 101, 2009