Dacrysoma rahanitriniainae, 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 : 258

Dacrysoma rahanitriniainae sp. n.

(Figs. 9, 45, 61, 66, 81, 93)

Habitus Fig. 9. Length 0.85–0.86 mm. Colour yellow-brown, antennae and legs yellow. Antennomeres 3–11 Fig. 45 . Head pubescence very long Fig.61 . Pronotum 0.19 mm long, 0.25 mm wide, Figs. 61 , 66 . Elytra 0.54 mm long, 0.42 mm wide, foveae finer and denser than pronotum, pubescence as pronotum.

Male: aedeagus Fig. 93

Female: spermatheca Fig. 81

Etymology. Named in honour of Lalao Sahondra Rahanitriniaina the collector of this and other new species.

Remarks. Found commonly with D. ravelosoni and immediately distinguishable by the paler colour, the shorter antennomeres 3–9, absence of micropterous/apterous females and the form of the genitalia.

Type data. Holotype: ♂, Ambohitantely Spec. Res. sifting forest litter, Winkler app. extr. S.18˚ 11’43.9’’ E.47˚17’16.1’’, 1613 m, 20.iv.2011, L.S.Rahanitriniaina & R.Raveloson (BMNH). Paratypes: all records by Winkler extraction of sieved samples collected in the Ambohitantely Spec. Res. unless recorded otherwise. 45 exs, ABT/ Nov. 2011/02, forest litter under big Pandanus , S. 18o11’52.7’’ E.47o17’0.4’’, 1603 m, 16.xi.2011, L.S.Rahanitriniaina & P. Banar (BMNH); 10 exs, ABT/18/2011, forest litter, S. 18o11’43.9’’ E.47o17’16.1’’, 1613 m, 11.1., 20.iv.2011, L.S.Rahanitriniaina & R.Raveloson (BMNH); 16 exs, ABT/17/2011, forest litter, S. 18o11’43.1’’ E.47o17’19.3’’, 1636 m, 20.iv.2011, L.S.Rahanitriniaina & R.Raveloson (BMNH); 1 ♂ ABT/10/2011, plant residues under Pandanus , S. 18o11’39.2’’ E.47o17’12.6’’, 1674 m, 19.iv.2011, L.S.Rahanitriniaina & R.Raveloson (BMNH); 7 exs, ABT/ Nov/ 2011/01, forest litter under big Pandanus , S. 18o11’52.7’’ E.47o17’0.4’’, 1603 m, 16.xi.2011, L.S.Rahanitriniaina & P. Banar (BMNH); 2 ♀ 1 ♂, ABT/ Nov/2011/08, forest litter, S. 18o11’48.5’’ E.47o17’ 09.3’’, 1595 m, 18.xi.2011, P. Banar (BMNH); 4 exs, ABT/ Nov/2011/19, forest litter, S.18˚10’56.9’’ E. 47˚21’17.9’’, 1497 m, 23.xi.2011, L.S.Rahanitriniaina (BMNH); 4 ♀ 2 ♂, ABT/ Nov/2011/18, litter under group of palm trees, S. 18o11’48.7’’ E.47o17’11.3’’, 1614 m, 22.xi.2011, L.S.Rahanitriniaina (BMNH); 1 ex, ABT/08/2011, forest litter at forest edge, S. 18o11’51.8’’ E.47o17’03.5’’, 1523 m, 19.xi.2011, P. Banar & R. Raveloson (BMNH); 2 exs, ABT/ Nov/2011/04, forest litter under palm tree and big rotten trunk, S. 18o11’56.5’’ E.47o17’26.1’’, 1561 m, 17.xi.2011, L.S.Rahanitriniaina (BMNH);19 exs, ABT/ Nov/2011/04, forest litter under palm tree and big rotten trunk, S. 18o11’56.5’’ E.47o17’26.1’’, 1561 m, 17.xi.2011, L.S.Rahanitriniaina (BMNH); 2 ♀, ABT/19/2011, litter and plant residues under Pandanus , S.18˚11’44.8’’ E.47˚17’14.2’’, 1609 m, 20.iv.2011, L.S.Rahanitriniaina & R.Raveloson (BMNH); 3 ♀ 2 ♂, ABT/14/2011, litter sec. forest, S.18˚11’25.2’’ E.47˚17’36.1’’, 1632 m, 20.iv.2011, L.S.Rahanitriniaina & R.Raveloson (BMNH); 2 ♂ 6 ♀, ABT/ Nov/2011/13, forest litter,, S. 18o10’56.9’’ E.47o17’21.9’’, 1497 m, 18.xi.2011, L.S.Rahanitriniaina (BMNH); 5 ♀, ABT/12/2011, plant residues under palm tree, S.18˚11’48.9’’ E.47˚17’10.5’’, 1602 m, 19.iv.2011, L.S.Rahanitriniaina & R.Raveloson (BMNH); 3 ♀ 5 ♂, ABT/ Nov.2011/16, forest litter under Pandanus , S.18˚11’42.6’’ E.47˚17’10.8’’, 1620 m, 21.ix.2011, L.S.Rahanitriniaina (BMNH); 1 ♂, ABT/03/2011, wet aluvia by stream, S.18˚10’51.7’’ E.47˚17’21.6’’, 1593 m, 19.iv.2011, L.S.Rahanitriniaina (BMNH); 11 exs, ABT/ Nov/2011/10, forest litter under palm tree, 1600 m, 18.xi.2011, P. Banar, (BMNH); 4 ♀ 1 ♂♂, ABT/05/2011, forest litter by waterfall, S. 18o10’53.6’’ E.47o17’22.4’’, 1503 m, 19.iv.2011, L.S.Rahanitriniaina (BMNH); 20 exs, ABT/ Nov.2011/21, forest litter under Pandanus , S. 18o11’48.5’’ E.47o17’06.1’’, 1656 m, 25.xi.2011, L.S.Rahanitriniaina (BMNH); 1 ex, ABT/ Sep/2011/29, sifting forest litter under Pandanus, Winkler app. extr., S. 18o11’54.2’’ E.47o17’05.5’’, 1613 m, 6.ix.2011, L.S.Rahanitriniaina (BMNH); 1 ex, ABT/ Sept.2011/03, forest litter under Pandanus , S.18˚11’46.4’’ E.47˚17’09.9’’, 1570 m, 1.ix.2011, L.S.Rahanitriniaina (BMNH); 11 exs, ABT/ Sept.2011/08, forest litter (bamboo, Pandanus ), S.18˚10’52.3’’ E.47˚17’21.3’’, 1493 m, 2.ix.2011, L.S.Rahanitriniaina (BMNH); 2 exs, ABT/ Sept.2011/08, forest litter, S.18˚11’42.9’’ E.47˚17’20.3’’, 1640 m, 17.ix.2011, L.S.Rahanitriniaina (BMNH); 23 exs, ABT/ Nov.2011/03, forest litter, S.18˚11’42.9’’ E.47˚17’20.3’’, 1640 m, 17.xi.2011, L.S.Rahanitriniaina (BMNH); 15 exs, ABT/ Sept.2011/11, forest litter under palm tree close by waterfall, S.18˚10’58.3’’ E.47˚17’22.2’’, 1518 m, 3.ix.2011, L.S.Rahanitriniaina (BMNH); 1 ex, ABT/ Sept.2011/27, forest litter under palm trees, S.18˚11’53.3’’ E.47˚17’11.2’’, 1602 m, 6.ix.2011, L.S.Rahanitriniaina (BMNH); 10 exs, ABT/ Nov.2011/17, forest litter wet material close to stream, S.18˚11’48.6’’ E.47˚17’05.7’’, 21.xi.2011, P. Banar (BMNH); 1 ♂, ABT/ Sept.2011/04, litter by stream, S.18˚10’52.3’’ E.47˚17’21.3’’, 1500 m, 2.ix.2011, L.S.Rahanitriniaina (BMNH); 1 ex, ABT/ Sept.2011/25, forest litter under Pandanus + palm tree, S.18˚11’43.6’’ E.47˚17’22.4’’, 1642 m, 5.ix.2011, L.S.Rahanitriniaina (BMNH); 9 exs, ABT/ Sept.2011/06, litter under big [?]by stream, S.18˚10’52.5’’ E.47˚17’21.2’’, 1476 m, 2.ix.2011, L.S.Rahanitriniaina (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.