Porus gabonensis, Roberto Pace, 2012

Roberto Pace, 2012, Aleocharinae from Gabon (Coleoptera: Staphylinidae), Tropical Zoology 25 (4), pp. 157-172 : 169-171

Porus gabonensis n. sp.

( Figures 32– 34 )

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, at light, leg. L. Bartolozzi and S. Taiti, num. mag. 1784, n. coll. 14822, MSNF.

Description

Length 4.2 mm. Body yellowish-red, head brown, antennae and legs yellowish-red. Eyes longer than the post-ocular region in dorsal view. Second antennomere shorter than the first, third as long as the second, fourth to tenth strongly transverse. Body devoid of reticulation except on the elytra, on which it is weak. Puncturation of the head distinct and dense, absent on the longitudinal median band, that of the pronotum irregularly distributed, absent on the longitudinal median band, that of the elytra weak and dense. Granulation of the abdomen weak. First free tergite of the male with a thorn on either side of the posterior border, second free tergite of the male with a protruding median carina, fifth free tergite of the male with a protruding median carina that does not reach the posterior margin of the tergite. Aedeagus: Figures 33 and 34 .

Comparative notes

The habitus and male secondary sexual characters of this new species are similar to those of P. bissauensis Pace, 1988 from Guinea-Bissau. The head of the new species is brown, whereas that of P. bissauensis is yellowish-red. The aedeagus of the new species has an enormous basal bulb and no ‘crista apicalis’, whereas the aedeagus of P. bissauensis has a narrow basal bulb and a strongly developed ‘crista apicalis’.

Figures

Figures 32 – 38. Habitus, aedeagus in lateral and ventral views and spermatheca. 32 – 34: Porus gabonensis n. sp.; 35 – 38: Myrmechusa gabonensis n. sp. Scale bars: 32: 4.2 mm; 35: 5.1 mm. Other scale bars: 0.1 mm.