Studies of Madagascan Ptiliidae (Coleoptera) 1: The Tribe Discheramocephalini including eighteen new species
Author
Darby, Michael
text
Zootaxa
2013
3718
3
239
266
journal article
42987
10.11646/zootaxa.3718.3.2
5a826d17-bd9a-4646-9603-f9a45a23ac5c
1175-5326
247941
003A16B5-34C5-48F8-A41C-8B784F3B06CB
Dacrysoma ravelosoni
sp. n.
(Figs. 10, 39, 44, 56, 65, 82, 83, 94)
Habitus Fig. 10. Length
0.94–0.96 mm
. Colour dark brown; legs and antennae dusky yellow. Antennae very long, antennomeres 3–9 very narrow and parallel sided,
Fig. 44
. Pronotum
Figs. 56
,
65
;
0.24 mm
long,
0.32 mm
wide, lateral margins slightly angled. Elytra
0.63 mm
long,
0.50 mm
wide, foveae finer and denser than pronotum, tending to form longitudinal rows.
Male
: aedeagus Fig. 94.
Female
: micropterous/apterous. Spermatheca shows some variation in length,
Figs. 82, 83
Etymology.
Named in honour of R. Raveloson who collected many of the specimens.
Remarks.
The large size, long thin antennae, dark colour and presence of micropterous/apterous females, will quickly distinguish this species.
Differences in length of the spermatheca and tip of the aedeagus suggested that two species might be involved, but the presence of intermediate forms ultimately discouraged this view.
Type
data.
Holotype
: ♂, Ambohitantely Spec. Res., ABT/08/2011, Forest litter forest edge, sifting, Winkler app. extr., S.18˚11’51.8’’ E. 47˚17’03.5’’,
1523 m
,
19.iv.2011
, P.Banar & R. Raveloson (BMNH).
Paratypes
: all records by Winkler extraction of sieved samples collected in the Ambohitantely Spec. Res. unless stated otherwise. 17 ♀
9 ♂
, same data as
holotype
; 1 ♀
3 ♂
, ABT/10/2011, sifting plant residues under
Pandanus
, S.18˚11’39.2’’ E.47˚17’12.6’’.
1674 m
,
19.iv.2011
, L.S.Rahanitriniaina & R.Raveloson (BMNH); 10 ♀
2 ♂
, ABT/
Nov/2011/08
, forest litter, S.18˚11’48.5’’ E. 47˚17’09.3’’,
1595 m
,
18.xi.2011
, P. Banar (BMNH);
1 ♂
1 ♀, ABT/
Nov/2011/11
, forest litter, S.18˚10’52.6’’ E.47˚17’22.5’’,
1497 m
,
18.ix.2011
, L.S.Rahanitriniaina (BMNH); 5 ♀,
1 ♂
, ABT/
Sept/2011/01
, forest litter under
Pandanus
, S.18˚11’45.1’’ E.47˚17’13.4’’,
1604 m
,
1.ix.2011
, L.S.Rahanitriniaina (BMNH); 6 ♀
2 ♂
, ABT/
Nov 2011/18
, litter under group of palm trees, S.18˚11’48.7’’ E.47˚17’11.3’’,
1614 m
,
22.xi.2011
, L.S.Rahanitriniaina (BMNH); 4 ♀, 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 ♂
1♀, ABT/
Nov/2011/13
, forest litter, S.18˚10’56.9’’ E.47˚17’21.9’’,
1497 m
,
18.xi.2011
, L.S.Rahanitriniaina (BMNH); 12 ♀
1 ♂
, 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);
1 ♂
, ABT/
Nov/2011/16
, forest litter under
Pandanus
, S.18˚11’42.6’’ E.47˚17’10.8’’,
1620 m
,
21.xi.2010
, 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); 3 exs, ABT/
Nov/2011/10
, forest litter under palm tree,
1600 m
,
18.xi.2011
, P. Banar (BMNH);
2 ♂
2 ♀, ABT/10/2011, plant residues under
Pandanus
, S.18˚11’39.2’’ E.47˚17’12.6’’,
1674 m
,
19.iv.2011
, L.S.Rahanitriniaina & R.Raveloson (BMNH); 32 exs, ABT/
Nov/2011/01
, forest litter under big
Pandanus
, S.18˚11’52.7’’ E.47˚17’0.4’’,
1603 m
,
16.xi.2011
, L.S.Rahanitriniaina & P. Banar (BMNH); 5 ♀
4 ♂
, ABT/18/2011, forest litter, S.18˚11’43.9’’ E.47˚17’6.1’’,
1613 m
,
16.xi.2011
, L.S.Rahanitriniaina & R.Raveloson (BMNH);
2 ♂
1 ♀, ABT/17/2011, forest litter, S.18˚11’43.1’’ E.47˚17’19.3’’,
1636 m
,
20.iv.2011
, L.S.Rahanitriniaina & R.Raveloson (BMNH); 1♀, ABT/
Nov.2011/09
, forest litter,
1610 m
,
22.xi.2011
, L.S.Rahanitriniaina (BMNH);
1♂
1♀, ABT/
Nov.2011/18
, litter under group of plam trees, S.18˚11’48.7’’ E.47˚17’11.3’’,
1614 m
,
22.xi.2011
, L.S.Rahanitriniaina (BMNH); 1 ex, ABT/
Sept.2011/17
, forest litter, S.18˚11’04.8’’ E.47˚17’11.8’’,
1598 m
,
4.ix.2011
, L.S.Rahanitriniaina (BMNH); 7♀♀, ABT/
Sept.2011/15
, forest litter, S.18˚10’57.3’’ E.47˚17’17.2’’,
1565 m
,
3.xi.2011
, L.S.Rahanitriniaina (BMNH); 30 ♀
6 ♂
, ABT/
Nov.2011/21
, forest litter under
Pandanus
,
S.18˚11’48.5’’ E.47˚17’06.1’’,
1656 m
,
25.xi.2011
, L.S.Rahanitriniaina (BMNH); 1♀, ABT/
Sept.2011/29
, forest litter under
Pandanus
,
S.18˚11’54.2’’ E.47˚17’05.5’’,
1613 m
,
6.ix.2011
, L.S.Rahanitriniaina (BMNH); 1 ♀, 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); 4 ♀
2 ♂
, forest litter (bamboo,
Pandanus
), S.18˚10’52.3’’. E.47˚17’21.3’’,
1493 m
,
2.ix.2011
, L.S.Rahanitriniaina (BMNH); 2 ♀, ABT/
Nov.2011/03
, forest litter under
Pandanus
, S.18˚11’02.2’’ E.47˚17’13.4’’,
1565 m
,
4.ix.2011
, L.S.Rahanitriniaina (BMNH); 1 ♀, ABT/
Sept.2011
/ 0 8, forest litter, S.18˚11’42.9’’ E 47˚17’20.3’’,
1640 m
,
17.xi.2011
, L.S.Rahanitriniaina (BMNH);
1 ♂
, ABT/
Nov/ 2011/03
, forest litter, S.18˚11’42.9’’ E 47˚17’20.3’’, 1640,
17.xi.2011
, 1640,
17.xi.2011
, L.S.Rahanitriniaina (BMNH);
5 ♂
3 ♀, 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); 7 ♀
8 ♂
, ABT/
Sept.2011/13
, forest litter under
Pandanus
and by big tree, S.18˚10’58.4’’ E.47˚17’22.6’’,
1525 m
,
3.ix.2011
, L.S.Rahanitriniaina (BMNH); 4 ♀, 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’’,[no altitude],
21.xi.2011
, P. Banar (BMNH); 6 ♀, ABT/
Sept.2011/04
, forest litter under
Pandanus
,
S.18˚11’46.4’’ E.47˚17’09.9’’,
1570 m
,
1.ix.2011
, L.S.Rahanitriniaina (BMNH); 33 exs; ABT/
Sept.2011/04
, forest litter by stream, S.18˚10’52.3’’ E.47˚17’21.3’’,
1500 m
,
2.ix.2011
, L.S.Rahanitriniaina (BMNH); 6 ♀, ABT/
Nov.2011/12
, forest litter, S.18˚10’53.3’’ E.47˚17’22.4’’,
1482 m
,
18.xi.2011
, L.S.Rahanitriniaina (BMNH); 2 ♀
1 ♂
, ABT/
Sept.2011
/, forest litter under big rock by stream, S.18˚10’52.5’’ E.47˚17’21.2’’,
1476 m
,
2.ix.2011
, L.S.Rahanitriniaina (BMNH);
2 ♂
, ABT/
Sept.2011/09
, forest litter under
Pandanus
close to river, S.18˚10’53.5’’ E.47˚17’22.3’’,
1490 m
,
2.ix. 2011
, L.S.Rahanitriniaina (BMNH);
2 ♂
, ABT/01/2011, forest litter under
Pandanus
very dry material, S.
18 10 51.7 E
. 47 17 21.6,
1593 m
,
19.iv.2011
, P. Banar & R. Raveloson (BMNH);
3 ♂
3 ♀, 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 exs, ABT/05/2011, forest litter by waterfall, S.
18o10’53.6’’ E
.47o17’22.4’’,
1503 m
,
19.iv.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.xi.2011
, L.S.Rahanitriniaina (BMNH); 4 exs, ABT/01/2011, forest litter under
Pandanus
very dry material, S.18˚10’51.7’’ E.47˚17’21.6’’,
1593 m
,
19.iv.2011
, P. Banar & R. Raveloson (BMNH);); 5 exs, ABT/
Nov.2011/12
, forest litter, S.18˚10’53.3’’ E.47˚17’22.4’’,
1482 m
,
18.xi.2011
, L.S.Rahanitriniaina (BMNH); 3 exs, Ankarafantsika N.P.,AKF/ 05/2011, forest litter, S.16˚ 18’ 05.1’’ E. 46˚ 49’ 08.3’’,
89 m
,
23.iv.2011
, L.S.Rahanitriniaina & R. Raveloson (BMNH).