Studies of Bolivian Ptiliidae (Coleoptera) 2: The subfamily Acrotrichinae including two new genera Petrotrichis and Microtrichis, and eight new species of Acrotrichis Author Darby, Michael text Zootaxa 2015 3999 2 190 210 journal article 10.11646/zootaxa.3999.2.2 189ae054-4725-44a7-a7b7-150eda7b7e71 1175-5326 241696 AB50C281-C0D7-4D30-B364-389107D924F4 Acrotrichis nashi sp. n. ( Figs. 8A –K) FIGURE 8. A. nashi A, habitus; B, side of pronotum viewed at 45°; C, antennomeres 3–11; D, pygidium showing principal setae; E, spermatheca; F, aedeagus; G, male ventrite seven; H, mentum and submentum x1000; I, mesoventrum x510; J, metaventral posterior margin and coxal plates x510; K, male ventrite six x1900. Habitus Fig 8A . Length 0.90 mm . Colour dark brown/black, antennae pale yellow, legs slightly darker yellow. Antennomeres 3–11 0.37 mm long Fig. 8 C. Mentum and submentum chaetotaxy Fig. 8 H. Width across eyes 0.32 mm . Pronotum 0.53 mm wide, 0.30 mm long, sides with a slight insinuation before the hind angle which are pointed when viewed at 45° Fig. 8 B. Elytra 0.51 mm long, 0.52 mm wide. Mesoventrum Fig. 8 I. Posterior margin of metaventrum and metacoxal plates Fig. 8 J. Pygidium lacking setae on the anterior border and with pais of longer setae as Fig. 8 D. Male : aedeagus Fig. 8 F; ventrite 7 Fig. 8 K; ventrite 8 Fig. 8 G. Female : spermatheca Fig. 8 E. Etymology . After the much respected UK Coleopterist David Ridley Nash who, until his recent death, was of great help to the author. Diagnosis . The male and female genital characters will distinguish this species. Type data : Holotype : ♀, GPS31, BOL / Nov 2013/08 , Bolivia 2013, Santa Cruz dep., W. Amboro NP, Siberia Pass env., 2481m , 28.xi , S. 17°50'25" E .64°41'58", sifting litter, Winkler app. extr., P.Baňař lgt. ( UASC ); Paratypes : 166 exs, same data as holotype ( UASC / MMBC ); 22 exs, GPS30, BOL / Nov 2013/7 , Bolivia 2013, Santa Cruz dep., W. Amboro NP, Siberia Pass env., 2508m , 28.xi , S. 17°50'27" E .64°41'59", sifting litter, Winkler app. extr., P.Baňař lgt. ( BMNH ); 36 exs, GPS36, BOL / Nov 2013/11 , Bolivia 2013, Santa Cruz dep., Barientos, 1817m , 29.xi , S. 18°06'00" E .63°48'05", sifting litter, Winkler app. extr., P.Baňař lgt. ( UASC / MMBC , BMNH ); 11 exs, GPS37, BOL / Nov 2013/12 , Bolivia 2013, Santa Cruz dep., Barientos, 1813m , 29.xi , S. 18°06'06" E .63°48'08", sifting litter, Winkler app. extr., P.Baňař lgt. ( UASC / MMBC ); 131 exs. GPS32, BOL / Nov 2013/09 , Bolivia 2013, Santa Cruz dep., W. Amboro NP, Siberia Pass env., 2450m , 28.xi , S. 17°50'12" E .64°42'08", sifting litter, Winkler app. extr., P.Baňař lgt. ( UASC ); 2♀ 1♂ , GPS43, BOL / Nov 2013/15 , Bolivia 2013, Santa Cruz dep., Santiago de Chiquitos env. under 'El Mirador', 693m , 5.xii.2013 , S. 18°19'10" E .59°34'16", sifting dry litter, Winkler app. extr., P.Baňař lgt. ( UASC / MMBC ).