Dacrysoma pilosum, Darby, Michael, 2013

Darby, Michael, 2013, Studies of Madagascan Ptiliidae (Coleoptera) 1: The Tribe Discheramocephalini including eighteen new species, Zootaxa 3718 (3), pp. 239-266 : 260-261

Dacrysoma pilosum sp. n.

(Figs. 13, 54, 75, 84)

Habitus Fig. 13. Length 0.70 mm. Colour dusky yellow, antennae and legs paler yellow. Antennomeres 3–11 Fig. 54 . Head pubescence very long (as Fig.61 ). Pronotum 0.21 mm long, 0.31 mm wide, lateral margins angled, the angle marked by a faint tooth Fig. 75 , pubescence very long, +/- one third the length of the pronotum, +/- 7 punctures between anterior and posterior margins. Elytra 0.53 mm long, 0.43 mm wide, more finely punctured than pronotum, pubescence as pronotum.

Female: spermatheca Fig. 84

Male: not known

Etymology. This epithet is taken from the Latin adjective pilosum , meaning hairy, and refers to the long pubescence present on the head, pronotum and elytra of this species.

Remarks. Distinguishable by the long pubescence and the form of the spermatheca which is smaller than all others studied.

Type data. Holotype: ♀, Ranomafana N.P., RNF/16/2011, sifting litter, Winkler app. extr., S.21˚14’57.9’’ E.47˚24’22.9’’, 1138 m, 16.iv.2011, L.S.Rahanitriniaina & R.Raveloson (BMNH).

Figures

FIGURES 41 – 55. Dacrysoma spp. antennomeres 3 – 11 (hairs omitted). 41, D. ranomafanense; 42, D. varium; 43, D. denticulatum; 44, D. ravelosoni; 45, D. rahanitriniainae; 46, D. dolorosum; 47, D. nigerrimum; 48, D. fabrum; 49, D. imitatum; 50, D. longulum; 51, D. subinsulsum; 52, D. andasibense; 53, D. fusum; 54, D. pilosum; 55, D. delicatum.

FIGURES 56 – 61. Dacrysoma spp. pronota. 56, D. ravelosoni (x 515); 57, D. nigerrimum (x 530); 58, D. ranomafanense (x 555); 59, D. fabrum (x 555); 60, D. varium (x 525); 61, D. rahanitriniainae (x 635).

FIGURES 62 – 76. Dacrysoma spp. pronota. 62, D. ranomafanense; 63, D. varium; 64, D. denticulatum; 65, D. ravelosoni; 66, D. rahanitriniainae; 67, D. dolorosum; 68, D. nigerrimum; 69, D. fabrum; 70, D. imitatum; 71, D. longulum; 72, D. subinsulsum; 73, D. andasibense; 74, D. fusum; 75, D. pilosum; 76, D. delicatum.

FIGURES 77 – 89. Dacrysoma spp. spermathecae. 77, D. ranomafanense; 78, D. varium; 79, D. delicatum; 80, D. denticulatum; 81, D. rahanitriniainae; 82, 83, D. ravelosoni; 84, D. pilosum; 85, D. nigerrimum; 86, D. fabrum; 87, D. andasibense; 88, D. imitatum; 89, D. subinsulsum.