Erro impiger, Darby, 2017

Darby, Michael, 2017, Erro gen. n. a new genus of featherwing beetles (Coleoptera: Ptiliidae) from Angola and Madagascar, Zootaxa 4299 (1), pp. 137-140 : 138-139

Erro impiger sp.n. ( Figs. 1, 3, 4, 6, 9, 10 )

Description. Habitus Fig.1 . Length from front of head to apex of elytra 0.80 mm. Shining and pubescent, colour blackish brown, pubescence, antennae and legs yellow. Head with depressions on either side of disc posterior to antennal insertions and a row of prominent setae on the posterior margin Fig. 6 . Width across eyes 0. 27mm. Antennomeres 3–11 0.39 mm long Fig. 3 . Mentum and submentum chaetotaxy as Fig. 8 . Pronotum and scutellum pitted, barely tuberculate; pronotum 0.22 mm long, 0. 34 mm. wide, scutellum with two shallow depressions at anterior corners. Elytra smooth and shining pubescence arising from shallow depressions, 0.49 mm long, 0.42 mm wide. Mesoventrum with elongate central keel Fig. 10 . Metaventral margin between metacoxae with two sharp points at corners Fig. 9 .

Male: not known

Female: spermatheca Fig. 4 .

Etymology. From the Latin impiger meaning active and referring to the insect's likely terrestrial movements.

Remarks. Distinguishable from angolensis by the more shining and less densely tuberculate head and pronotum, and by the presence of the thick spermathecal duct.

Type data: Holotype: ♀, Madagascar, Ankarafantsika N.P., AKF/05/2011, sifting forest litter, S. 16°18'05.1 E.46°49'08.3", 89m, 23.iv.2011, L.S.Rahanitriniaina & R. Raveloson ( BMNH) . Paratypes: 1 ex, Madagascar, Ranomafana N.P., Sifting, S. 21°15' E.47°25', 970–990m, 13–15.xi.2010, P. Banar ( BMNH) ; 1 ex (teneral), Madagascar, Ranomafana N.P., RNF/16/2011, sifting litter, S. 21°14' 57.9" E.47°24'22.9", 1138, 16.iv.2011, L.S.Rahanitriniaina & R. Raveloson ( BMNH) ; 2exs, Madagascar, Ambohitantely S.R., ABT /12/2011, sifting plant residues under palm tree, S. 18°11'48.9 E.47°17'10.5", 1602m, 19.iv.2011, L.S.Rahanitriniaina & R. Raveloson ( BMNH) ; 1 ex, Madagascar, Ambohitantely S.R., ABT / Sept. 2011/25, sifting forest litter under Pandanus & palm tree, S. 18°11'43.6 E.47°17'22.4", 1642m, 5.ix.2011, L.S.Rahanitriniaina ( BMNH) ; 2 exs, Madagascar, Ranomafana N.P. Vatoharanana RNF, sifting litter, S. 21°16' 59.7" E.47°25'30.3", 1126m, 5.x.2012, L.S.Rahanitriniaina ( BMNH) .

Erro angolensis sp. n. 2. habitus; 5, spermatheca; 7, pronotum x 395; 8, mentum and submentum x1400.

Figures

FIGURES 1 – 10. Erro impiger sp. n. 1. habitus; 3, antennomeres 3 – 11; 4, spermatheca; 6, pronotum x 395; 9, metaventrum and abdomen x 395; 10, mesoventrum x 720.