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Records of the Australian Museum (2012) Vol. 64 
UFW 30, LID 29, DMA 31, HVO 4, WOC 13, MOD 4, 
OOD 9, IAD 9, ASD 3, AOD 7, ML 19, BMW 7, MSL 
1.8, SL 13, SW 3, FL c. 50.— Eyes hairy; face narrow, 
inner orbits parallel; length malar space c. 0.25x basal 
mandibular width; flagellum as long as head width; middle 
flagellomeres c. 1.5x as long as wide; hind tarsus as long 
as hind tibia; hind basitarsus 4.5x as long as wide; hind 
basitibial area carinate on posterior side only. Gonoforceps 
with long hair (Fig. 37); S7 with narrow, rectangular lateral 
lobes and strong posterior projections (Fig. 70).— Scape, 
labrum, mandible medially, tarsi, tibiae and distal ends 
of femora orange-brown, fore and mid tibiae medially 
suffused with dark brown; flagellum dark brown dorsally, 
mid brown ventrally. T1-5 with bands usually narrow, silver, 
sometimes of moderate width and occasionally gold.— 
Clypeus, excluding apex, densely punctate; scutum with dull 
sheen, pit-reticulate, close fine punctures.— Face densely and 
scutum closely covered with long, finely-branched, bright 
orange hair. Fore basitarsus with tapered plume of golden 
hair; femora and trochanters with much long pale hair. 
Female (AM K.334760).— Head width 4.10 mm, body 
length 11.6 mm. Relative dimensions: HW 50, HL 37, UID 
28, UFW 30, LID 30, DMA 31, HVO 5, WOC 13, MOD 4, 
OOD 8, IAD 8, ASD 3, AOD 9, ML 24, BMW 8, MSL 1.0, 
SL 15, SW 3, FL c. 33.— Eyes hairy; face slightly wider 
than long, inner orbits parallel; length malar space c. 0.2x 
basal mandibular width; clypeus transversely convex, basal 
suture horizontal, not bowed; flagellum shorter than head 
width, FI 1.6x as long as wide, F2-9 c. 1.2x as long as wide; 
inner hind tibial spur with c. 9 teeth; pygidial plate minutely 
emarginate, strongly elevated medially.— Labrum orange- 
brown; mandible medially amber; trochanters and femora 
dark brown; remainder of legs mid-brown. Tl-4 with narrow 
silver, occasionally gold, bands.— Clypeus and supraclypeal 
area reticulate, densely punctate, scutum reticulate, weakly 
shining with close fine punctures.— Head with white to 
pale orange, plumose hair, dense in paraocular areas and on 
frons, open on clypeus and supraclypeal area. Scutum closely 
covered with very short, plumose, dull orange-brown hair; 
scopa brown; prepygidial fimbria brown. 
Remarks. This species has commonly been misidentified 
in collections as T. venustus and the specimen used as the 
model for figs 198-200 in Michener (1965) was probably 
T. orientalis n.sp. 
There are a number of sympatric species that are similar 
in appearance. Males may be distinguished from T. venustus 
by the extensive areas of dark brown on mid tibia and the 
shape of S7; from T. aeratus n.sp. by the presence of a plume 
on fore basitarsus; from T. fuscus n.sp. by paler colour and 
the shape of S7 and from T. tenuiculus by the shape of S7. 
Females may be distinguished from T. venustus by the narrow 
metasomal bands and straight basal margin of the clypeus; 
from T. aeratus n.sp. by unflattened clypeus; from T. fuscus 
n.sp. by the paler colour and number of teeth on inner hind 
tibial spur and from T. tenuiculus by the length of FI and 
the number of teeth on inner hind tibial spur. 
Distribution. Eastern Australia between Brisbane and 
Adelaide (BBS, CP, FLB, KAN, NET, NNC, NSS, SB, SCP, 
SEC, SEH, SEQ, VM) (Fig. 109). 
Etymology. The specific name is a Latin adjective meaning 
eastern, referring to the distribution of this species. 
Trichocolletes platyprosopis n.sp. 
Figs 38, 71, 110 
Type. Holotype 18 km NW Eneabba, Western Australia, 
9-12 Sep. 1987, T. F. Houston, on flowers of Daviesia, in 
WAM 13908. 
Specimens examined. The holotype and the following. Western Australia: 
4§\ same data as holotype, WAM (13905-07,09,10); 3c?, 6$, 28 km 
26° W of N Eneabba, 28 Aug. 1999, T. F. Houston, on flowers of Daviesia 
divaricata,WAM (27508-12,14-17); ?, 12mlsNGeraldton, 12Jul. 1973, 
N. McFarland, WAA (45290); S, Nabawa, 9 Jul. 1998, S. R. Patterson, 
WAM (21394); $, Watheroo National Park (30.20°S 115.83°E), 3-5 Oct. 
1980, T. F. Houston, on flowers of Daviesia divaricata, WAM (13838). 
Diagnosis 
Eyes not hairy; metasomal bands silver-white, ferruginous 
across anterior margin. Female clypeus polished and 
strongly flattened, almost spatulate; labrum tectiform. Male 
S7 distinctive (Fig. 71); legs slender, orange-brown; hind 
basitarsus gently bowed. Unlike any other species. 
Descriptions 
Male (holotype).— Head width 3.85 mm, body length 11.3 
mm. Relative dimensions: HW 50, HL 38, UID 31, UFW 
33, LID 30, DMA 29, HVO 0, WOC 14, MOD 4, OOD 
8, IAD 7, ASD 3, AOD 8, ML 20, BMW 4, MSL 1.0, SL 
13, SW 3, FL c. 54.— Eyes not hairy; face narrow; clypeus 
distinctly flattened though covered with dense pubescence; 
ocellar-ocular area strongly depressed; malar space short 
(length c. 0.2x basal mandibular width); flagellum longer 
than head width; all flagellomeres longer than wide. Legs 
very slender; hind tarsus l.lx as long as hind tibia; hind 
basitarsus 5.7x as long as wide; gently bowed and tapering 
slightly towards distal end; basitibial area with pigmented 
posterior carina; fore tibial calcar with c. 5 short teeth. 
Gonoforceps transversely truncate with moderately short, 
stiff apical hairs (Fig. 38); S7 with small lateral lobes fused 
with posterior projections and basal teeth, approximately 
diamond-shaped (Fig. 71).— Labrum and mandible amber, 
scape, femora, tibiae and tarsi orange-brown, with darker 
suffusions on femora and hind tibia; coxae, trochanters and 
flagellum dorsally dark brown, ventrally mid-brown. Tl-5 
with moderately broad, white bands, distinctly ferruginous 
across anterior margin; T7 mid brown.— Clypeus densely 
punctate except ventral rim impunctate, polished; scutum 
strongly reticulate, obscuring punctures.— Head densely 
covered with long, orange hair, erect on clypeus. Scutum 
closely covered with long, densely-branched pale orange- 
brown hair; fore basitarsus without plume; hind femur with 
scattered white hair on anterior margin. 
Female (WAM 27511).— Head width 4.20 mm, body length 
12.8 mm. Relative dimensions: HW 50, HL 39, UID 30, 
UFW 31, LID 31, DMA 30, HVO 4, WOC 13, MOD 3, OOD 
8, IAD 8, ASD 3, AOD 9, ML 21, BMW 5, MSL 0.5, SL 15, 
SW 3, FL c. 34.— Eyes not hairy; malar space short (length 
c. O.lx basal mandibular width); labrum tectiform; clypeus 
strongly flattened, almost spatulate; supraclypeal area 
bulbous; middle flagellomeres c. 1.3x as long as wide; inner 
hind tibial spur with c. 8 long, well-spaced teeth; tarsal claws 
simple; pygidial plate broad, truncate, with medial elevation 
and wide, upturned margin.— Labrum , mandible medially, 
tarsi, tibiae and apical half femora orange-brown; coxae, 
