Batley & Houston: Australian bee genus Trichocolletes 
25 
as long as wide. Legs slender; distitarsi moderately broad; 
mid basitarsus short, broad, 2.9x as long as wide; hind tarsus 
1.30x as long as hind tibia; hind basitarsus 5.6x as long as 
wide; posterior carina of basitibial area almost reaching apex. 
Gonoforceps broad apically with sparse hair (Fig. 34); S7 
with very wide rectangular lateral lobes and small posterior 
projections (Fig. 63).— Labrum and ventral rim of clypeus, 
scape, mandible medially, tibiae, tarsi and distal ends of 
femora, orange-brown, with darker suffusions on posterior 
faces of femora, fore and mid basitarsi; flagellum ventrally, 
dark brown (with some orange-brown suffusions). T2-5 with 
indistinct golden brown bands, sterna black. —Scutum dull 
with weak pit-reticulation. —Face with dense, plumose, bright 
orange hair, stiffly erect on clypeus and supraclypeal area, 
longer and dorsally directed on frons, basal margin of clypeus 
bare. Scutum closely covered with long, finely-branched, 
orange hair; fore basitarsus with weak plume; mid and hind 
trochanters with dense plumes of white hair; hind basitarsus 
with fringe of sparse, sinuous, white hair on anterior margin. 
Tl,2 with sparse cover of long, finely-branched, golden hair; 
T3-6 with relatively long, semi-adpressed hair matching 
underlying integument, but with golden reflections. 
Female (AM K.316697).— Head width 4.35 mm, body 
length 12.9 mm. Relative dimensions: HW 50, HL 36, UID 
27, UFW 31, LID 32, DMA 32, HVO 3, WOC 7, MOD 4, 
OOD 8, IAD 8, ASD 3, AOD 9, ML 21, BMW 8, MSL 1.5, 
SL 15, SW 3, FL c. 33.— Face longer than wide; inner orbits 
ventrally divergent; length malar space c. 0.3x basal width 
mandible; clypeus transversely convex, with short, shallow 
sagittal concavity basally; frontal carina strong ending as 
small tubercle on supraclypeal area; middle flagellomeres 
c. as long as wide; inner hind tibial spur with c. 12 strong 
teeth; tarsal claws with strong inner rami; pygidial plate 
entire with upturned margin and moderately strong medial 
elevation. —Labrum , ventral margin clypeus dark red- 
brown; mandible medially deep amber. Tl,2 with apical 
margins brownish; legs dark brown. —Clypeus weakly 
reticulate, densely punctate except apically; scutum weakly 
reticulate, punctures open to close; Tl-4 with change of 
texture on apical margins.— Clypeus and supraclypeal 
area with open, long, finely-branched, white hair, close 
in apicolateral corners of clypeus and paraocular areas; 
frons with close, long, plumose, white hair; vertex with 
dark brown, plumose hair. —Scutum openly covered with 
short, plumose hair, white across anterior margin, dark 
brown elsewhere; metanotum closely covered with longer, 
plumose, white hair. T1 sparsely covered with finely- 
branched, white hair; T2-4 with short, adpressed, white 
hair forming apical fringes, complete on T4, interrupted 
medially on T3 and restricted to lateral margins of T2; 
prepygidial fimbra mid brown. 
Remarks. Although there was no coincident collection, two 
separate locations yielded both sexes on different days but at 
similar times of the year. Their distinctive morphology makes 
it unlikely that they belong to different species. 
Similar to T. burnsi from which male may be distinguished 
by clypeal hair, unmodified mid basitarsus and hair beneath 
hind femur. Female may be distinguished from T. burnsi by 
inner rami on tarsal claws and white hair on T2-4. 
Distribution. Coastal areas of southern Queensland and 
northern New South Wales (NNC, SEQ) (Fig. 100). 
Trichocolletes leucogenys n.sp. 
Figs 64, 101 
Type. Holotype S, Dryandra State Forest c. 27 km NW 
Narrogin, Western Australia, 3 Oct. 1982, C. A. Howard & 
T. F. Houston, on flowers of Gastrolobium, in WAM 13580. 
Specimens examined. The holotype and the following. Western Australia: 
$, 5$, same data as holotype, WAM (13579, 81-85); 2<3\2$, Bolgart, 
8 Aug. 1949 &12 Jan. 1950, ANIC; $, Broomehill, WAM (13777); $, 
Busselton, 25 Jun. 1943, O. Dawson, ANIC; 12$, 7$, Cottesloe, WAM 
(13681-93,13718,21,28-29,14011-12); $, 37kmECramphome(31.7847°S 
118.9533°E), 20 Oct. 2009, M. Batley, AM (K.344730); $, Darlington-Helena 
Valley, 21 Jul. 1987, M. Lyons, on flowers of Muris sp. & Daviesia, WAM 
(13623); $, Deepdene, 4 Sep. 1963, L. M. O’Halloran, WAM (13799); 2$, 
Dryandra State Forest 27 km NW Narrogin, 12 Oct. 1991, T. F. Houston, 
on flowers of Gastrolobium parviflorum, WAM (13586-87); 2$, Dryandra, 
Sep. 1977, WAM (13790-91); $, 16 km NE Dumbleyung (33.2200°S 
117.8486°E), 9 Oct. 2009, M. Batley, AM (K.344734); 8$, 166 km W 
Esperance, 16 Oct. 1974, C. A. & T. F. Houston, SAM (32-024612-19); $, 
$, 12 mis N Geraldton, 12 Jul. 1973, N. McFarland, WAA (45289-91); 2$, 
Gooseberry Hill, 20 Aug. 1993, T. F. Houston, patrolling flowers of Daviesia, 
WAM (13593-94); $, Helena Valley, 4 Aug. 1987, R. Peakall, on flowers of 
Isopogon, WAM (13857); $, Kalbarri, 29 Aug. 1970, K. T. Richards, WAA 
(80845); $, Kanowna, 21 Aug. 1974,A. M. &M. J.Douglas, onMesembrion, 
WAM (13892); $, 2$, 17 kmN Kellerberrin, 12 Sep. 1986, T. F. Houston, 
on flowers of Gastrolobium, WAM (13588-90); $, Lake Biddy, WAM 
(13714); 5$, 7.5 km WSW Lake Cronin, 19-26 Sep. 1978, T. F. Houston, 
Daviesiaaphylla & Gastrolobium, WAM (13618-22); $, 15 km S Lake King 
(33.2217°S 119.7147°E), 8 Oct. 2009, M. Batley, ex Daviesia benthamii, 
AM (K.344731); 11$, 5.5-6.5 km SW McDermid Rock, 27 Sep.-3 Oct. 
1978, T. F. Houston, on flowers of Daviesia costata & D. aphylla, WAM 
(13604-07,09,10,13-17); 5$, $, Merredin, 30 Aug. 1951, C. Jenkins, WAA 
(80826,27,30,32,33); $, Moora, 21 Aug. 1940, G.F.H.J, WAA (80822); 3$, 
3$, Mt Jackson, 5-11 Sep. 1979, T. F. Houston etal., on flowers of Jacksonia 
compressa, WAM (13591-92,13894-96,14013); <$, Mullewa, September, L. 
J. Newman, WAA (80823); $,c. 2 km SWMundaring Weir, 1 Aug. 1999, T. 
F. Houston, on flowers of Daviesia decurrens, WAM (27181); $, 14 km NW 
Narrogin (32.8761°S 117.0425°E), 9 Oct. 2009, M. Batley, AM (K.344733); 
$, lOkmSNerrenNerrenHS, 19Aug. 1980,C.A. Howard & T. F. Houston, 
onflowers of Chorizema ericifolium, WAM (13969); $, 6 km W Newdcgatc 
(33.1011°S 118.9639°E), 8 Oct. 2009, M. Batley, AM (K.344732); 6$, 11 
mi N of New Norcia, 18 Aug. 1971, T. F. Houston, SAM (32-024620-25); 
$, Norseman area of Lake Cowan, 6 Sep. 1990, R. R McMillan, WAM 
(13970); $, North Tarin Rock Reserve (32.98°S 118.23°E), 16-18 Oct. 1985, 
T. F. Houston, on flowers of Gastrolobium sp., WAM (13899); $, Sixty Foot 
Falls near Gosnells, 5 Sep. 1998, E. McCrum, WAM (19117); $, Southern 
Cross, September, L. J. Newman, WAA (80825); $, 2$, Swanboume, WAM 
(13708-10); $, Tallering Stn, Aug. 1976, R. P. McMillan, WAM (13789); 
2$, Tutanning Reserve 18-25 km E Pingelly, 30 Oct.-3 Nov. 1980, T. F. 
Houston, on flowers of Daviesia brevifolia, WAM (13897-98); 5$, 13$, 
Wamenusking, WAM (13694-99,13701-07,13762,65-68); $, Ynin Stn NE 
of Mullewa, 7 Aug. 1954, A. Snell, ANIC. 
Diagnosis 
Eyes hairy; metasomal bands narrow, silver; ocellar-ocular 
area frequently with weak coppery colour. Male gena with 
dense white pubescence. Female clypeus sagittally flattened; 
lateral epistomal suture curved; clypeus coplanar with 
supraclypeal area. 
Descriptions 
Male (holotype).— Head width 4.20 mm, body length 12.5 
mm. Relative dimensions: HW 50, HL 39, UID 30, UFW 31, 
LID 30, DMA 28, HVO 4, WOC 14, MOD 3, OOD 9, IAD 
7, ASD 3, AOD 9, ML 19, BMW 5, MSL 2.0, SL 12, SW 3, 
FL c. 47.— Eyes hairy; face broad, inner orbits subparallel; 
length malar space c. 0.3x basal mandibular width; middle 
flagellomeres c. 1.6x as long as wide. Legs slender; fore 
basitarsus short and gently bowed; hind tarsus c. 1.2x as long 
