Stenectinobregma transvaalica, Paśnik, 2007

Paśnik, G., 2007, A taxonomic review of Stenectinobregma SCHEERPELTZ, a South African genus of Aleocharinae (Coleoptera, Staphylinidae), with descriptions of two new species, Linzer biologische Beiträge 39 (1), pp. 1111-1120 : 1115-1116

Stenectinobregma transvaalica nov.sp. (15-16)

T y p e m a t e r i a l: Holotype :: Republic of South Africa, Transvaal , Pietersburg distr., Woodbush, forest humus, IX.1960, N. Leleup ( MRAC) . Paratypes: 3: same data as holotype ( MRAC) ;: same data as holotype ( ISEA) .

R e d e s c r i p t i o n: Body. Length 3.2-3.4 mm, convex, parallel-sided, glossy; body colour brown, legs yellowish-red, antennae black with antennomeres 1-3 yellow.

Head circular in outline, as long as wide, convex, glossy, narrower than pronotum, widest behind eyes; eyes relatively small, weakly protruding from lateral contours of head, length of each seen from above shorter than postocular region; surface of head without microsculpture; punctuation fine and sparse; pubescence short and sparse, directed inward. Antennae moderately long, clearly increase in width apically, antennomere 3 longer than 2, antennomeres 4-10 longer than wide, antennomere 11 as long as antennomeres 9-10 combined.

Pronotum quadrate, convex, glossy, widest in apical third, lateral sides rounded in front, gradually narrowed in straight line to obtuse hind angles; before base with wide and relatively deep transverse impression, surface lacking microsculpture; punctuation relatively coarse and dense, interstices between punctures equals their diameter; pubescence at midline directed anteriorly.

Elytra subquadrate, slightly wider than pronotum, at suture as long as pronotal length at midline; surface lacking microsculpture; punctuation coarse and diverse in density: dense, with interstices between punctures smaller than their diameter in apical ¾ and sparse with interstices between punctures 5-6 times their diameter in posterior ¼.

Abdomen subparallel-sided, widest at level of tergites V-VI, bases of tergites III-V each with deep transverse impression; impressions coarsely punctuate; tergal punctuation minute, pinprick-like and sparse; surface of tergites lacking microsculpture; pubescence relatively long and sparse, semierect.

Male. Aedeagus as in Figs 15-16 . Female unknown.

R e m a r k s Stenectinobregma transvaalica nov.sp. is similar to S. brincki SCHEERPELTZ 1974 , from which it can be distinguished by the head, pronotal and tergal surface without microsculpture, the antennomere 3 longer than 2, the antennomere 10 longer than wide, the elytra punctuation dense in anterior ¾ and sparse in posterior ¼ and by the shape of aedeagus.

E t y m o l o g y: The name is derived from Transvaal where the new species was found.

Figures

Figs 15-16: Stenectinobregma transvaalica nov.sp.: (15) aedeagus in lateral view, (16) aedeagus in ventral view.