Studies of Peruvian Ptiliidae (Coleoptera) 4: Peruvium a new subgenus of Ptenidium with seven new species Author Darby, Michael text Zootaxa 2016 4107 3 392 402 journal article 39155 10.11646/zootaxa.4107.3.7 c5700bff-ef25-4766-abe5-5671c263fdf9 1175-5326 266247 AC6925B2-F917-42B4-9500-517F44C97622 Ptenidium brevissimum sp. n. (Figs. 1, 12, 19, 24, 31, 36a–b, 37) Habitus Fig. 1. Length 0.79 mm . Colour black appearing polished and shining, without pubescence except on the front of the head, antennae and legs dusky yellow. Antennomeres 3–11 0.22 mm long, Fig. 37 . Width across eyes 0.26 mm . Pronotum very finely punctured and with a narrow raised border on lateral margins, 0.37 mm wide, 0.23 mm long. Setae at hind angles of pronotum Fig. 12 . Elytra very finely punctured 0.51 mm long, 0.38 mm wide. Scutellum base with a small raised disc and two depressions Fig 24. Proventral keel between procoxae sharply defined posteriorly Fig. 19. Male : aedeagus Figs. 36 a–b. Female : spermatheca Fig. 31. Etymology . After the Latin brevis m eaning short and referring to the antennae. Diagnosis. The very short antennae will quickly distinguish this species from all others. Type data : Holotype : ♀, PERU : Cusco Dept.: Villa Carmen Field Station, cafeteria ~ 1.7 km west, research transect, 12.89250°S 71.41917°W , 555m , 24–26.V.2011 , D.J. Bennett & E. Razuri, flight intercept trap, PER-11- FIT-011 ( MUSM ). Paratypes : 2 exs. same data as holotype ( SEMC / BMNH ).