Dacrysoma varium, 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 : 250-254

Dacrysoma varium sp. n.

( Figs. 6 , 42 , 60 , 63 , 78 , 91)

Habitus Fig. 6 . Length. 0.80–0.81 mm. Colour: yellowy brown, antennae clear yellow, legs slightly darker yellow. Antennomeres 3–11 Fig.42 . Pronotum 0.22 mm long, 0.32 mm wide, pubescence very long, approximately one third length of pronotum, Figs. 60 , 63 . Elytra 0.51 mm long, 0.44 mm wide, pubescence slightly shorter than pronotum.

Male: aedeagus Fig. 91

Female: spermatheca Fig. 78

Etymology. This epithet is taken from the Latin adjective varius, meaning variable, and reflects the degree of variation apparent in this species.

Remarks. A variable species which is most easily distinguished by the length of the pubescence and the form of the genitalia.

Type data. Holotype: ♀, Andasibe N.P., Circuit Indri 2, sifting, 20.xi.2010, S.Rahanitriniaina (BMNH). Paratypes: 21 exs. same data as holotype; 14 exs., Andasibe, ASB/ 09/2011, forest litter, sifting, Winkler app. extr., S.18˚56’506’’ E.48˚25’222’’, 944 m, 12.iv.2011, L.S.Rahanitriniaina (BMNH).; 2♀, Andasibe N.P., ASB/07/2011, shallow ravine, sifting, Winkler app. extr., S.18˚56’505’’ E. 48˚25’204’’, 947 m, 11.iv.2011, L.S.Rahanitriniaina (BMNH).

Figures

FIGURES 1 – 8. Habitus. 1, Discheramocephalus bisulcatus; 2, D. vasilii; 3, Cissidium banari ♀; 4, C. banari ♂; 5, Dacrysoma ranomafanense; 6, D. varium; 7, D. denticulatum; 8, D. fusum.

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.