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 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.
FIGURES 35–40.
Dacrysoma
spp.. 35,
D. felis
; 36,
D. denticulatum
, mesoventral process showing perforation (x 850); 37,
D. denticulatum
, mesoventral process showing perforation (x1020); 38,
D. varium
aedeagus (x1260); 39,
D. ravelosoni
aedeagus (x1180); 40,
D. fusum
aedeagus (x1440).
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
(x515); 57,
D. nigerrimum
(x530); 58,
D. ranomafanense
(x555); 59,
D. fabrum
(x555); 60,
D. varium
(x525); 61,
D. rahanitriniainae
(x635).
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
.
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).