Acrotrichis strenua, 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 : 194

Acrotrichis strenua sp. n.

( Figs. 2 G,H, 29A–I)

Habitus Fig. 29A . Length 1.22 mm. Colour blackish brown, antennae and legs pale brown. Antennomeres 3–11 0.47 mm long Fig. 29 C. Mentum with 2 long setae at each of the anterior corners, pairs of setae in rows 1–3 spaced well apart Fig. 29 G. Width across eyes 0.44 mm. Pronotum 0.83 mm wide, 0.46 mm long, sides weakly curved without a sinuation at the hind angle Fig. 29 B. Elytra 0.52 mm long, 0.62 mm wide. Posterior margin of mesoventral collar with a shallow median excision Fig. 29 H. Metaventrum posterior margin between the metacoxae medium/short Fig. 30 I. Pygidium Fig. 29 F.

Male: ventrite six Fig. 30 E; aedeagus Fig. 29 D.

Female: not known.

Etymology. Johnson ms name.

Remarks. Closely allied to superbioides but distinguishable by its larger size, shorter and darker antennae, blackish colouration and the more moderately curved pronotal sides with more acute hind angles.

Type data. Holotype: ♂, Perinet, 12.x.1970, ex forest litter, leg. P.M.Hammond ( BMNH).

Figures

FIGURE 2. Skeletal features. A, A. barclayi, pronotum and scutellum / elytra x 465; B, A. exigua pronotum x 2480; C, A. truncata pronotum x 2220; D, A. exigua elytra x 4550; E, A. hammondi elytra x 2020; F, A. subafricana elytra x 2460; G, A. strenua metaventrum x 840; H, A. strenua mesoventrum x 840; I, A. barclayi, microtrichia on abdominal sclerites x 1640; J, A. subafricana, abdominal ventrites x 735; K, A. cuspida palisade fringe on abdominal sclerite x 1620; L, A. cuspida, spines on abdominalventrite 6 x 550.

FIGURE 29. A. strenua. A, habitus; B, side of pronotum viewed at 45 ˚; C, antennomeres 3 – 11; D, aedeagus; E, ventrite six; F, pygidium; G, mentum and submentum showing chaetotaxy; H, mesoventral collar x 395; I, metaventral posterior margin and metacoxal plates x 385.