Acrotrichis colini, 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 : 168

Acrotrichis colini sp. n.

( Figs. 10A –H)

Habitus Fig. 10A . Length 0.60 mm. Colour blackish brown, antennae dark brown. Antennomeres 3–11 0.23 mm long Fig. 10 C. Breadth across eyes 0.23 mm. Mentum and submentum showing chaetotaxy Fig. 10 I. Pronotum 0.31mm wide, 0.18 mm long, sides with a very slight sinuation before the hind angle Fig. 10 B. Elytra 0.33 mm long, 0.35 mm wide. Mesoventral collar only slightly sloping shoulders and with a medial excision. Posterior margin of metaventrum between metacoxae wide Fig. 10 H. Central tooth of the pygidium barely discernable.

Male: ventrite six with a single row of 12/13 short spines Fig. 10 F; aedeagus Fig. 10 E.

Female: spermatheca Fig. 10 D.

Etymology. I have great pleasure in naming this species in honour of Colin Johnson not just because of the work he did on these Acrotrichis , but in recognition of the encouragement and support he has given for my interest in Ptiliidae over more than thirty years.

Remarks. The short antennae and shape of the genitalia will quickly distinguish this small species.

Type data. Holotype: ♀, Isalo N.P. Analalava Forest, ISL/ Jan. 2013/04 GPS 222, sifting litter, Winkler app. extraction, S.22˚35’ 05.0” E.45˚07’ 51.8”, 725m, 17.i.2013, L.S.Rahanitriniaina & E.M.Rabotoson ( BMNH). Paratypes: 2 examples, same data as holotype.

Figures

FIGURE 10. A. colini. A, habitus; B, side of pronotum viewed at 45 ˚; C, antennomeres 3 – 11; D, spermatheca; E, aedeagus; F, ventrite six; G, mesoventrum showing collar barely sloping at humeri x 465; H, metaventral posterior margin and metacoxal plates x 465; I, mentum and submentum showing chaetotaxy (note: mentum abraded, dotted lines indicate probable positions of setae).