Atheta (Tropatheta) librevillensis, Roberto Pace, 2012

Roberto Pace, 2012, Aleocharinae from Gabon (Coleoptera: Staphylinidae), Tropical Zoology 25 (4), pp. 157-172 : 165

Atheta (Tropatheta) librevillensis n. sp.

( Figures 15– 18 )

Holotype ♂, Gabon, Forêt de la Mondah, 0°36/26//N, 9°19/0 3//E, 10 m s.l.m., Cap Esterias, about 20 km N of Libreville, 6-16.XII.1995, leg. L. Bartolozzi and S. Taiti, num. mag. 1784 n. coll. 14823, MSNF.

Description

Length 2.29 mm. Body shiny, brown, head and free abdominal tergites three, four and five with base brown, antennae brown with the two basal antennomeres reddish, legs yellowish-red. Eyes as long as the post-ocular region in dorsal view. Second antennomere shorter than the first, third a little longer than the second, fourth to ninth transverse. Reticulation of the head clearly visible, that of the pronotum distinct, that of the elytra strong, that of the abdomen very transverse and weak, but distinct on fifth free tergite. Puncturation of head and pronotum fine, dense and weak. Granulation of the elytra fine, dense and weak, that of the abdomen weak and sparse. Aedeagus: Figures 16 and 17 ; male sixth free tergite: Figure 18 .

Comparative notes

The habitus and the aedeagus of the new species are similar to those of A. inducta Fauvel, 1907 from Tanzania, of which I have examined the male holotype labelled ‘Afrique Orient., Kilimanjaro (zones des forêts), Kibosho, 1700 m, Ch. Alluaud 1904, A. inducta Fvl. , Type’ (IRSNB). The antennae of the two species are similar, and the apex of the aedeagus is narrow in both species in ventral view. The basal bulb of the aedeagus of the new species, however, is well developed, and that of A. inducta is reduced. The internal sclerotized structure of the aedeagus is completely different in the two species.

Figures

Figures 12 – 22. Habitus, aedeagus in lateral and ventral views, male sixth free tergite and spermatheca. 12 – 14: Amanota gabonensis n. sp.; 15 – 18: Atheta (Tropatheta) librevillensis n. sp.; 19 – 20: Atheta (Phanerosphaena) mondahensis n. sp.; 21 – 22: Drusilla gabonensis n. sp. Scale bars: 12: 1.92 mm; 15: 2.29 mm; 19: 1.92 mm; 21: 4.49 mm. Other scale bars: 0.1 mm.