Revision of the Old World Sobarocephala (Diptera: Clusiidae)
Author
Lonsdale, Owen
text
Zootaxa
2014
2014-01-21
3760
2
211
240
journal article
http://dx.doi.org/10.11646/zootaxa.3760.2.4
4d9042ea-e8a1-4f49-ab59-0d6dda999023
1175-5326
229578
3107BB30-6BC2-4012-ACE6-0FB90D8D5FCA
Sobarocephala plumicornis
(
Lamb,
1914
)
Figs 5, 6
Heteromeringia plumicornis
Lamb,
1914
:
308
.
Sobarocephala plumicornis
,
Cogan,
1980
:
636
.
Lonsdale &
Marshall
,
2011
:
12
[
lectotype
designation].
Description
(Figs 5, 6).
Male.
Body length
2.9mm
. Arista densely plumose with hairs sparser apically. Setae brown. Ocellar seta absent. Presutural intra-alar seta absent. Two dorsocentral setae with slightly more developed setula in front of anterior dorsocentral. Acrostichal seta absent. One lateral scutellar seta. Head yellow with ocellar tubercle and stripe on first flagellomere brown, frons sometimes with orange tint; gena shining. Scutum yellow with one pair of faded brown postsutural stripes not reaching base of scutum. Scutellum brownish laterally and basally. Pleuron yellow with anepisternum and anepimeron brown. Metanotum brownish medially below scutellum and on katatergite. Legs yellow with fore tarsi and fore and hind tibiae brown. Halter entirely white. Wing dusky on distal
1
/
3
along R
2
+
3
and R
4
+
5
. M
1
+
2
ratio
4.5
. Abdomen brown with surstylus (excluding faded central spot) yellow.
Female.
Paralectotype
similar to male except notal stripes darker and more well-defined, scutellum entirely brown dorsally, metanotum brown and terminalia yellow. Female from
Nigeria
(Fig.
7
) differs as follows: scutum with light brown postsutural mottling; scutellum brown and metanotum entirely light brown; anepisternum and anepimeron light brown; coxae white; mid tibia light brown; first flagellomere with spot at base of arista; gena and parafacial paler.
Male terminalia.
Not dissected. Surstylus approximately
3
/
5
height of epandrium, broad basally, tapering to rounded point apically and with posterior margin straight.
Lectotype
:
SEYCHELLES
.
Professor J.S. Gardiner
,
1914
(
1
♂
,
BMNH
).
Paralectotype
:
SEYCHELLES
.
Same collection as lectotype (
1
♀
,
BMNH
)
.
Additional material examined:
NIGERIA
.
Ibadan
,
6
.ix.
1962
,
D.C. Eidt
, Malaise trap (
1
♀
,
CNC
).
Comments.
The Nigerian female (the western-most record of
Sobarocephala
in the Old World) is significantly darker than the
Seychelles
types
and may represent a separate species. This female superficially resembles
S. laticrinis
(Fig.
10
), but the Nigerian female has stronger notal strips, a darker scutellum, entirely brown tibiae with the mid tibia paler, an entirely light brown anepisternum and anepimeron, and no presutural intra-alar seta.