Batley & Houston: Australian bee genus Trichocolletes 
17 
SL 8, SW 4, FL c. 78 .—Eyes not hairy; face broad; inner 
orbits ventrally divergent; clypeus flattened apicolaterally; 
length malar space c. 0.4x basal width mandible; labrum 
truncate, uniformly convex; scape short and swollen 
(width 0.5x length); flagellum much longer than head 
width; F2-9 c. 2.8x as long as wide, Fll and part F10 
flattened and expanded (Fig. 7). Legs long and slender; 
hind tarsus c. 1.3x as long as hind tibia; hind tibia gently 
bowed transversely; hind basitarsus c. 6.Ox as long as 
wide, gently bowed longitudinally; posterior carina of hind 
basitibial area extends slightly past apex. Costal margin 
of third submarginal cell of forewing noticeably narrow. 
Gonoforceps with sparse hair, narrowed preapically (Fig. 
31); S7 with lateral lobes compressed and fused with 
posterior projections and basal teeth (Fig. 54 ).—Clypeus 
yellow-brown; labrum, scape, mandible medially, tarsi, 
distal half fore femur, anterior faces mid femur, fore and 
mid tibia, orange-brown; remainder of legs dark brown; 
flagellomeres Fl-9 mottled orange-brown ventrally, dark 
brown dorsally, Fll ventrally with large, medial brown 
patch. Tl-5 with broad gold bands; T7 red-brown. Wings 
darkened .—Clypeus weakly reticulate, shining, with 
scattered setiferous punctures; supraclypeal area densely 
punctate; scutum strongly pit-reticulate and indistinctly 
punctate .—Face above base of clypeus with dense, erect, 
finely-branched, orange hair; lower paraocular area with 
short, adpressed, pale hair; clypeus with sparse, long, 
simple, orange hair. Scutum with close, plumose, dark- 
tipped pale brown hair; fore trochanter and femur with 
copious, long, orange hair; fore basitarsus without plume; 
anterior margin of hind tibia with fringe of mid-length 
orange hair. 
Female (WAM 27182 ).—Head width 4.5 mm, body length 
14.3 mm. Relative dimensions: HW 50, HL 37, UID 29, 
UFW 31, LID 31, DMA 31, HVO 4, WOC 13, MOD 3, 
OOD 8, IAD 7, ASD 3, AOD 8, ML 21, BMW 7, MSL 1, 
SL 13, SW 3, FL c. 36 .—Eyes not hairy; face broad, inner 
orbits slightly divergent ventrally; malar space c. 0.25x 
basal width mandible; clypeus uniformly convex with 
slight sagittal flattening; supraclypeal area prominent; 
frontal carina ending in small tubercle on supraclypeal 
area; flagellum moderately long; middle flagellomeres 
c. 1.2x as long as wide; basitibial area well-defined with 
sharp edges on both margins (obscured by setae unless 
worn) (Fig. 23); tarsal claws simple; inner hind tibial 
spur with c. 8 strong teeth; pygidial plate very broad and 
coarsely sculptured.— Labrum , mandible medially, apical 
half of clypeus orange-brown; legs, flagellum dark brown. 
Tl-4 with broad, gold bands, ferruginous across anterior 
margin .—Clypeus reticulate, shining with scattered, 
large punctures, supraclypeal area with contiguous, large 
punctures; scutum dull with strong pit-reticulation .—Face 
with long, brown, plumose hair, dense in paraocular areas 
and on frons, open on supraclypeal area and sparse on 
clypeus. Scutum with close, short, plumose, dark-tipped 
pale brown hair; prepygidial fimbria honey-coloured; hind 
tibial scopa dark brown. 
Remarks. This species is referred to as T. dives and F258 
in Houston (2000). 
Distribution. Southern coastal Western Australia (JF, GS, 
SWA) (Fig. 90). 
Trichocolletes dowerinensis Rayment 
Figs 32,41,55,91 
Trichocolletes dowerinensis Rayment, 1931, p. 162 (male). 
Specimens examined. The holotype S, Dowerin, Western Australia, ANIC 
and the following. Western Australia: S, 9 km E by S Carrabin, 9 Oct. 
1981,1. D. Naumann & J. C. Cardale, ANIC; 3, Bejoording, Dec. 1949, 
R. P. McMillan, WAM (13818); 3$, Boorabbin Rock, 4-9 Oct. 1981, 
T. F. Houston, on flowers of Dciviesia croniniana & Jacksonia, WAM 
(13848-50); 3d 1 ,2$, Broomehill, WAM (13712,74-76,13820); f, 22 km 
N Bullfinch, 7 Sep. 1979, T. F. Houston, on flowers of Swainsona micro- 
phylla, WAM (13967); 3, Cunderin, Aug.-Sep. 1913, WAM (13822); S, 
Dryandra, 11 Oct. 1965, A. Douglas, WAM (13519); 6d, 31 km 9° W of 
N Eneabba, 28 Aug. 1999, T. F. Houston, on flowers of Daviesia incrassata 
ssp. teres, WAM (27526-31); % Eneabba, 6 Sep. 1996, R. P. McMillan, on 
flowers of Jacksonia ulicina, WAM (18463); <3, Eneabba, 13 Sep. 1996, R. 
P. McMillan, on Daviesia, WAM (21023); % NE Eneabba, 27 Aug. 1995, J. 
Cane & L. Kervin, ex Daviesia sp., WAM (32094); % 60 km N Esperance 
(33.3611°S 121.6992°E), 29 Sep. 2004, M. Batley, <?x Daviesia sp., AM 
(K.316513); 4$, 13 km 35°S of W Eurardy HS (27.761PS 114.5694°E), 
25-26 Aug. 1999, T. F. Houston, on flowers of Mirbelia trichocalyx and 
Jacksonia velutina, WAM (27495-98); 6?, 61 km E Hyden, 14 Oct. 1978, 
T. F. Houston, on flowers of Burtonia hendersoni, WAM (13842—47); S, 
7.5 km WSW Lake Cronin, 19-26 Sep. 1978, T. F. Houston, on flowers of 
Daviesia aphylla and Gastrolobium sp., WAM (13516-17); 3<$, % 5.5-6.5 
km SW McDermid Rock, 27 Sep.-3 Oct. 1978, T. F. Houston, on flowers of 
Pultenaea sp. & Daviesia aphylla, WAM (13513-5, 13855); 3, Merredin, 
Oct. 1948, A. Douglas, WAM (13821); 3, Minnivale, WAM (13715); 
2$, Mt Observation, 21 Oct. 1987, R. P. McMillan, WAM (13853-54); 
3, National Park, WAM (13819); 3, % 6 km W Newdegate (33.1011°S 
118.9639°E), 8 Oct. 2009, M. Batley, ex Gastrolobium ilicifolium, AM; 3, 
2$, North Tarin Rock Reserve (32.98°S 118.23°E), 16-18 Oct. 1985, T. 
F. Houston, on flowers of Gastrolobium sp., WAM (13518, 13851-52); 3, 
% Stirling Ranges NP SE Camel Lake, 2 Oct. 1995, J. Cane & L. Kervin, 
ex Gastrolobium spinosum & Daviesia flexuosa, WAM (32098); % 12 
km NW Tarin Rock (33.0544°S 118.1456°E), 9 Oct. 2009, M. Batley, ex 
Gastrolobium glaucum, AM; % Tutanning Reserve 18-25 km E Pingelly, 
30 Oct.-3 Nov. 1980, T. F. Houston, on flowers of Daviesia brevifolia, WAM 
(13856); 3, Wamenusking, WAM (13761); 2$, 2% 15 km N Westonia 
(31.1981°S 118.7586°E), 19 Sep. 2004, M. Batley, ex Gastrolobium sp., 
AM (K.316509-12); 3, 23 kmEYellowdine, 10 Oct. 1981,1. D. Naumann 
& J. C. Cardale, ANIC. 
Diagnosis 
Length male c. 12 mm, female c. 14 mm; eyes hairy; 
metasomal bands broad silver. Male hind tibia and basitarsus 
broad, flat; metasoma with prominent stiff, black setae. 
Female pygidial plate with deep, linear emargination, tarsal 
claws simple. 
Descriptions 
Male (K.316510).— Head width 4.25 mm, body length 11.9 
mm. Relative dimensions: HW 50, HL 36, UID 33, UFW 33, 
LID 30, DMA 29, HVO 4, WOC 15, MOD 4, OOD 9, IAD 
9, ASD 3, AOD 9, ML 18, BMW 7, MSL 2.5, SL 15, SW 
4, FL c. 54.— Eyes hairy; face broad, inner orbits slightly 
convergent ventrally; length malar space c. 0.45x basal width 
mandible; middle flagellomeres c. 1.25x as long as wide; 
fore and mid basitarsi bowed transversely; mid basitarsus 
broad and laterally compressed; hind basitarsus flattened 
with slight transverse curvature and expanded posteriorly 
(ta2,3 less strongly expanded); hind tarsus l.lx as long as 
tibia; hind basitarsus 2.4x as long as wide; basitibial region 
separated from surroundings by sharp edges; fore tibial calcar 
with short apical spine but without teeth. Penis valves short 
(Fig. 32); S7 unlike any other species, lateral lobes rounded 
and bulbous (Fig. 55).— Labrum , mandible basally, apical 
half of clypeus milky or yellow-brown; basal 10% scape 
