Eustenidia gabonensis, Roberto Pace, 2012

Roberto Pace, 2012, Aleocharinae from Gabon (Coleoptera: Staphylinidae), Tropical Zoology 25 (4), pp. 157-172 : 163

Eustenidia gabonensis n. sp.

( Figures 9 – 11 )

Holotype ♂, Gabon, Forêt de la Mondah, 0°36/26//N, 9°19/0 3//E, 10 m a.s.l., Cap Esterias, about 20 km N of Libreville, 6-16.XII.1995, leg. L. Bartolozzi and S. Taiti, num. mag. 1784, n. coll. 14820, MSNF.

Description

Length 1.46 mm. Body shiny, yellowish-red, posterior half of the elytra and fourth free abdominal tergite brown, antennae reddish, legs yellowish-red. Eyes shorter than the post-ocular region in dorsal view. Second antennomere shorter than the first, third shorter than the second, fourth to ninth longer than wide. Body devoid of reticulation except on the elytra on which is very transverse. Granulation of head and pronotum absent on the disc, on the sides of the pronotum dense and weak. Granulation of the elytra distinct, that of the abdomen fine and weak. Median sulcus of the pronotum divided posteriorly into two short sulci. The pronotum bears a lateral oval fovea before the posterior angles. Three foveae in the bottom of the basal sulcus of the first free abdominal tergite and a brief median carina at the base of the second free tergite. Aedeagus: Figures 10 and 11 .

Comparative notes

The new species is similar to E. coiffaiti Pace, 1994 also from Gabon. It differs in the aedeagus being slightly arched to the ventral side, in the broad ‘crista apicalis’, this being very narrow in E. coiffaiti , and in the apical portion of the median lobe of the aedeagus, which is twice as broad as in that of E. coiffaiti , in ventral view. The penultimate antennomeres of the new species are not transverse and those of E. coiffaiti transverse.

Figures

Figures 1 – 11. Habitus, aedeagus in lateral and ventral views, spermatheca and male sixth free tergite. 1 – 4: Brachida gabonensis n. sp.; 5 – 6: Cameronium gabonense n. sp.; 7 – 8: Coenonica wingonbiensis n. sp.; 9 – 11: Eustenidia gabonensis n. sp. Scale bars: 1: 1.8 mm; 5: 1.37 mm; 7: 2.57 mm; 9: 1.46 mm. Other scale bars: 0.1 mm.