Studies of Madagascan Ptiliidae (Coleoptera) 3: The genus Acrotrichis including twenty seven new species Author Darby, Michael text Zootaxa 2014 3866 2 151 201 journal article 10.11646/zootaxa.3866.2.1 f0c34243-cd3b-49fa-b4b7-ff17bc96c362 1175-5326 249555 2165AC20-3607-4CF2-A1A6-DB4CA45D7E22 Acrotrichis boothi sp. n. ( Figs. 8A –G) Habitus Fig. 8A . Length 0.72 mm . Colour yellowish brown, head darker, antennae and legs pale yellow. Antennomeres 3–11 0.3 mm long Fig. 8 C. Mentum and submentum chaetotaxy Fig. 8 F. Breadth across eyes 0.25 mm . Pronotum 0.36 mm wide, 0.17 mm long, sides with a sinuation before the sharply pointed posterior angles Fig. 8 B. Elytra 0.43 mm long, 0.43 mm wide. Posterior margin of mesoventral collar with a medial excision Fig. 8 G. Posterior margin of metaventrum and coxal plates Fig. 8 G. Male : ventrite six with 3/4 slightly thicker setae not clearly spines; aedeagus Fig. 8 E. Female : spermatheca Fig. 8 D. Etymology . Named in honour of Dr Roger Booth of the BMNH for his patience and help in dealing with my many requests. Remarks . The yellow colour of the body and darker head, very sharply pointed pronotal angles, length of the elytra and form of the genitalia will quickly distinguish this species. Type data . Holotype : ♀, Andasibe N.P., Circuit Indri 2, sifting, 20.xi.2010 , S. Rahanitriaina ( BMNH ). Paratypes : 2 examples, same data as Holotype . 1 example, Ambohitantely Spec. Res., ABT/ Nov 2011/18 , S.18˚11’48.7” E.47˚17’11.3”, 1614m , 22.xi.2011 , L.S.Rahanitriniaina