Revision of the Australian Bee Genus Trichocolletes Cockerell (Hymenoptera: Colletidae: Paracolletini)
Author
Batley, Michael
text
Records of the Australian Museum
2012
Rec. Aust. Mus.
2012-05-23
64
1
1
50
http://dx.doi.org/10.3853/j.0067-1975.64.2012.1589
journal article
10.3853/j.0067-1975.64.2012.1589
2201-4349
4683957
42F22568-9A99-4F96-A422-F020AA558F90
Trichocolletes brunilabrum
n.sp.
Figs 49, 85
Type
.
Holotype
♂
,
7 km
N
Wongawol
HS,
Western Australia
,
29–30 Jul. 1983
,
T
.
F. Houston
&
R
.
P. McMillan
, on flowers of
Swainsona
, in
WAM
13651.
Specimens examined
. The
holotype
and the following.
Western Australia
:
3♂
, same data as holotype
WAM
(13648–50)
;
♀
,
Belele, A
.
Snell
,
WAM
(19118)
;
2♀
,
Belele
,
WAM
(13710–11)
;
3♀
,
Boolathana Station
(
24.53°S
113.78°E
),
29 May–25 Aug. 1995
,
N. Hall
,
WAM
(22207–08, 21024)
;
♀
,
Bush Bay
(
25.06°S
113.70°E
),
23 May–23 Aug. 1995
,
N. Hall
,
WAM
(21025)
;
♀
,
37 km
SW
Glenayle
HS,
6–9 Aug. 1983
,
T
.
F.
Houston
&
R
. P. McMillan, on flowers of
Swainsona
, WAM
(13652);
♀
,
13 km
WSW
Hamelin
,
23 Aug. 1980
,
T
. F. Houston, on flowers of
Swainsona
, WAM
(13989);
3♀
,
30 km
NW
Lorna Glen
HS,
10 Aug. 1983
,
T
.
F.
Houston
&
R
.
P.
McMillan
,
on
Indigofera georgei
, WAM
(13653–55)
;
3♀
,
31 km
ESE
Minnie Creek
HS,
2 Sep. 1980
,
C. A. Howard
&
T
. F. Houston, on flowers of
Swainsona
, WAM
(13984–86).
Diagnosis
Length c.
11 mm
; eyes hairy; scape black in both sexes; legs black; metasoma sericeous with moderately wide, silver bands, narrowly ferruginous across anterior margins; labrum without a tubercle; known only from
western Australia
. Male fore basitarsus with short hair only; S7 with narrow, rectangular lateral lobes. Female clypeus coarsely sculptured; hind tarsal claw with inner ramus.
Descriptions
Male (
holotype
).—
Head
width
3.60 mm
, body length
11.1 mm
. Relative dimensions: HW 50, HL 37, UID 30, UFW 31, LID 29, DMA 28, HVO 4, WOC 14,
MOD
4, OOD 8, IAD 8, ASD 3,
AOD
7,
ML
17, BMW 7, MSL 2.5, SL 15, SW 3, FL c. 52.—
Eyes
hairy, length malar space c. 0.25× basal mandibular width; length flagellum equal to head width, all flagellomeres longer than wide; hind tarsus 0.9× as long as hind tibia; hind basitarsus 4.4× as long as wide; posterior carina of basitibial area extends well beyond apex. Genital capsule similar to that for
T. orientalis
n.sp.
(Fig. 37); S7 with thin, rectangular lateral lobes and large basal teeth (Fig. 49).—
Labrum
amber with black suffusions; mandible medially amber; flagellum dark brown, paler ventrally; distitarsi apically orange-brown.
T
1–5 with broad, silver bands.—
Clypeus
coarsely punctate, with moderately large, coalescent punctures and irregular, narrow interspaces;
scutum
with dull sheen, moderately strong pit-reticulation and close small punctures.—
Face
with dense, long, white hair.
Scutum
with close, long, finely-branched pale brown hair; fore basitarsus without distinct plume; hind femur with open fringe long white hair on anterior margin.
Female (
WAM
13653).—
Head
width
3.90 mm
, body length
11.6 mm
. Relative dimensions: HW 50, HL 37, UID 29, UFW 32, LID 35, DMA 30, HVO 3, WOC 15,
MOD
4,
OOD 8, IAD 7, ASD 3,
AOD
9,
ML
15, BMW 8, MSL 2.0, SL 15, SW 3, FL c. 29.—
Eyes
hairy; length malar space c. 0.15× basal mandibular width; clypeus gently convex, basal suture shallowly V-shaped; middle flagellomeres c. 1.1× as long as wide; inner hind tibial spur with c. 8 long teeth; hind tarsal claw with distinct, sharp inner ramus, mid tarsal claw with minute inner ramus, fore tarsal claw simple; pygidial plate with medial elevation and small emargination.—
Labrum
, mandible medially dark brown; distitarsi apically orange-brown.
T
1–4 with wide silver bands, narrowly ferruginous across anterior margins.—
Clypeus
strongly reticulate, coarsely punctate with large dense punctures partially coalescent.
Scutum
dull with strong pit-reticulation obscuring punctures.—
Face
with long white plumose hair, becoming pale brown hair near ocelli, dense in paraocular areas and on frons, sparse on clypeus and supraclypeal area.
Scutum
with close, plumose, pale orange-brown hair; tibial scopa brown medially, white laterally; prepygidial fimbria pale brown.
Remarks
. The sexes were associated by morphological similarity and geographic distribution only. This species is referred to as F
267 in
Houston (2000)
.
Distribution
. Predominantly east from Shark Bay, Western Australia, with one record from near Perth (
CAR
, GAS, MUR, SWA) (
Fig. 85
).