Acrotrichis discoloroides Johnson 1969

Darby, Michael, 2014, Studies of Madagascan Ptiliidae (Coleoptera) 3: The genus Acrotrichis including twenty seven new species, Zootaxa 3866 (2), pp. 151-201 : 173-174

Acrotrichis discoloroides Johnson 1969

( Figs. 14A –H)

Habitus Fig. 14A . Length 0.93 mm. Colour dark reddish brown, antennae and legs yellow. Antennomeres 3–11 0.33 mm long Fig. 14 C. Width across eyes 0.32 mm. Mentum and submentum chaetotaxy Fig. 14 G. Pronotum 0.27 mm wide, 0.50 mm long, lateral margins sinuate before hind angles which are sharply pointed Fig. 14 B. Elytra 0.48 mm long, 0.50 mm wide. Mesoventral collar with shallow median linear depression Fig. 14 E. Posterior margin of metaventrum between metacoxae wide, metacoxal plates rounded medially Fig. 14 F. Pygidium broadly triangular, anterior border without a fringe of setae and with two larger setae close to the anterior corners and four close to the posterior margin near the tip Fig. 14 H.

Male: not known.

Female: spermatheca Fig. 14 D.

Remarks. Placed by Johnson in sub genus Ctenopteryx. Wide ranging pantropical species which may have its origins in the nearctic/neotropical ecozones. No pygidial apical tooth is present in this specimen possibly the result of damage.

Distributional data. 1♀, Andasibe NP. Winkler extraction from sieved leaf litter, 2–5.v.2011, L.S.Rahanitriaina (BMNH).

Figures

FIGURE 14. A. discoloroides. A, habitus; B, side of pronotum viewed at 45 ˚; C, antennomeres 3 – 11; D, spermatheca; E, mesoventral collar x 950; F, metaventral posterior margin and metcoxal plates x 425; G, mentum and submentum showing chaetotaxy; H, pygidium.