Erro gen. n. a new genus of featherwing beetles (Coleoptera: Ptiliidae) from Angola and Madagascar Author Darby, Michael text Zootaxa 2017 4299 1 137 140 journal article 32621 10.11646/zootaxa.4299.1.10 0d965755-b8a9-4a9e-a087-23c13af56bfc 1175-5326 835059 0BA04428-0E3D-4161-B96C-1EBA8E7E1836 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 ) . FIGURES 1–10. Erro impiger sp. n. 1. habitus; 3, antennomeres 3–11; 4, spermatheca; 6, pronotum x395; 9, metaventrum and abdomen x395; 10, mesoventrum x720. Erro angolensis sp. n. 2. habitus; 5, spermatheca; 7, pronotum x 395; 8, mentum and submentum x1400 .