Acrotrichis absona, 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 : 157

Acrotrichis absona sp. n.

( Figs. 3A –E)

Habitus Fig. 3A . Length 0.98 mm. Colour blackish, the elytra appearing brown through transmitted light; antennae and legs brown. Antennomeres 3–11 0.38 mm long Fig. 3 C. Width across eyes 0.35 mm. Mentum and submentum chaetotaxy Fig. 3 E. Pronotum 0.61 mm wide, 0.36 mm long, sides evenly rounded not sinuate at hind angles Fig. 3 B. Elytra 0.54 mm long, 0.61 mm wide. Mesoventral collar with a shallow median excision, shoulders sloped and anterior projections slightly undercut Fig. 3 F. Metaventral posterior margin between metacoxae wide Fig. 3 G.

Male: not known.

Female: spermatheca Fig. 3 D.

Etymology. Johnson ms name.

Remarks. The undercut forward projections of the mesoventral collar will distinguish this species from all but magnifica from which it may be separated by its smaller size, the less angled pronotal sides, and the darker antennae.

Type data. Holotype: ♀, Perinet, 15.iv.1969, forest of transition, 928 m, leg. H. Franz (MM). 34 examples, same data as holotype; 2 examples, Ranomafana N.P., RNF/12/2011, sifting litter, Winkler app. extr. S.21˚14’51” E.47˚24’09.1”, 1118 m, 15.iv.2011, P. Banar & R. Raveloson ( BMNH); 44 examples, Ranomafana N.P., RNF/20/ 2011, sifting forest litter on old road, Winkler app. extr. S.16˚18’05.1” E.46˚49’08.3”, 89 m, 23.iv.2011, L.S.Rahanitriniaina & R.Ravelson ( BMNH).

Figures

FIGURE 3. A. absona. A, habitus; B, side of pronotum viewed at 45 ˚; C, antennomeres 3 – 11; D, spermatheca; E, mentum and submentum showing chaetotaxy; F, mesoventral collar x 350; G, posterior margin of metaventrite and metacoxal plates x 350.