Acrotrichis lacrimosa, Darby, Michael, 2014

Darby, Michael, 2014, Studies of Madagascan Ptiliidae (Coleoptera) 3: The genus Acrotrichis including twenty seven new species, Zootaxa 3866 (2), pp. 151-201 : 180-181

Acrotrichis lacrimosa sp.n.

( Figs. 20A –I)

Habitus Fig. 20A . Length 0.80 mm. Colour brown, antennae and legs pale yellow. Antennomeres 3–11 0.32 mm long Fig. 20 C. Mentum and submentum Fig. 20 F. Width across eyes 0.30 mm. Pronotum 0.46 mm wide, 0.25 mm long, sides moderately rounded without a sinuation at the hind angles Fig. 20 B. Elytra 0.42 mm long, 0.46 mm wide. Lateral posterior borders of mesoventral collar slope down moderately at shoulders and form a shallow excision medially Fig. 20 H. Posterior margin of metaventrite between metacoxae long Fig. 20 I, metacoxal plates Fig. 20 I. Pygidium without an apical point.

Male: ventrite six with a single spine Fig, 20G; aedeagus tapering towards the tip Fig. 20 E. Female: spermatheca Fig. 20 D.

Etymology. The epithet reflects the tear drop appearance of the spermatheca.

Remarks. The single spine on ventrite six of the male and the form of the genitalia will distinguish this species.

Type data. Holotype: ♂, Montagne d’Ambre N.P., sifting, 1100 m, 30.x.2010, P. Banar. Paratypes: 39 examples, same data as holotype; 1 example, Isalo N.P. Analalava Forest, ISL/ Jan 2013/05 GPS 223, sifting litter, Winkler app. extraction, S. 22˚35’ 46.7” E. 47˚05’50.6”, 717 m, 17.i.2013, L.S.Rahanitriniaina & E.M.Robotoson ( BMNH); 1 example, Isalo N.P. Analalava Forest, ISL/ Jan 2013/01 GPS 219, sifting litter, Winkler app. extraction, S. 22˚35’46.7” E. 47˚05’50.6”, 717 m, 17.i.2013, L.S.Rahanitriniaina & E.M.Robotoson ( BMNH); 3 examples, Isalo N.P. Analalava Forest, ISL/ Jan 2013/04 GPS 222, sifting litter, Winkler app. extraction, S. 22˚35’05.0” E.47˚07’51.8”, 725 m, 17.i.2013, L.S.Rahanitriniaina & E.M.Robotoson ( BMNH); 5 examples, Isalo N.P. Analalava Forest, ISL/ Jan 2013/03 GPS 227, sifting litter, Winkler app. extraction, S. 22˚35’08.8” E. 47˚07’47.8”, 723m, 17.i.2013, L.S.Rahanitriniaina & E.M.Robotoson ( BMNH).

Figures

FIGURE 20. A. lacrimosa. A, habitus; B, side of pronotum viewed at 45 ˚; C, antennomeres 3 – 11; D, spermatheca; E, aedeagus; F, mentum and submentum showing chaetotaxy; G, ventrites six and seven; H, mesoventral collar x 535; I, metaventral posterior margin and metacoxal plates x 535.