24 
Records of the Australian Museum (2012) Vol. 64 
Trichocolletes lacaris n.sp. 
Figs 27, 62, 99 
Type. Holotype S, Lake Callabonna, South Australia, 1 Aug. 
1969, H. Mincham, in SAM 32-024564. 
Specimens examined. The holotype and the following. South Australia: 
% data as for holotype, SAM (32-024565); 3(3, Lake Palankarinna, 28-31 
Jul. 1984, D. Lacis, SAM (32-024560-62); % NE edge Lake Puntawolona 
Tirari Desert, 21 Aug. 1971, M. Archer, WAM (13798); <3* Tirari Desert 
Lake Ngapakaldi, eastern shore, 6 Aug. 1984, D. Lacis, SAM (32-024563). 
Western Australia: ( 3 , 7$, 7 mi E Carnarvon, 21 Aug. 1971, T. F. Houston, 
on Swainsona occidentalis, SAM (32-024671-78); % off Kendrew Island 
(20.5889°S 116.5639°E), 26 Jul. 1999, S. M. Slack-Smith & M. Hewitt, 
at sea, WAM (27144). 
Diagnosis 
Length c. 12-13 mm; eyes hairy; metasomal bands wide, 
silver, ferruginous across anterior margins; legs black. Male 
S7 with broad, rounded lateral lobes and short posterior 
projections (Fig. 62). Female hind tarsal claw without an 
inner ramus. 
Variation 
Specimens from Western Australia had noticeably darker 
pubescence than those from South Australia, but were 
otherwise indistinguishable. The solitary male from Western 
Australia was smaller (length 10 mm) and had fore and hind 
basitarsi that were shorter and hence stouter by c. 25% than 
males from South Australia, but otherwise differed only in 
colour. As leg shape may vary allometrically and colour 
variation might be environmentally induced (Rayment, 
1929), the species was not divided based on a small number 
of available specimens. 
Descriptions 
Male (holotype).— Head width 4.50 mm, body length 12.8 
mm. Relative dimensions: HW 50, HL 33, UID 33, UFW 
34, LID 31, DMA 31, HVO 5, WOC 14, MOD 4, OOD 10, 
IAD 9, ASD 3, AOD 9, ML 21, BMW 6, MSL 1.0, SL 14, 
SW 3, FL c. 44. —Eyes hairy; face almost quadrate; length 
malar space c.0.2x basal mandibular width; length flagellum 
less than head width, middle flagellomeres c. 1.5x as long as 
wide. Legs slender; fore basitarsus thickened strongly near 
calcar; hind tarsus 1. lx as long as hind tibia; hind basitarsus 
4.9x as long as wide; hind basitibial area with strong 
posterior carina extending well past apex. In the specimen 
from Carnarvon, the carina is complete and the basitibial 
area distinctly elevated above the surrounding area (Fig. 27). 
Genital capsule similar to that for T. orientalis n.sp. (Fig. 
37); S7 with broad, rounded lateral lobes and short posterior 
projections (Fig. 62).—Distitarsi and flagellum (partly or 
wholly) ventrally orange-brown; labrum, mandible and 
remainder of tarsi dark brown. Tl-5 with broad, silver bands, 
ferruginous across anterior margins.— Scutum pit-reticulate 
with dull sheen and close, small punctures.— Face with 
dense, long, erect, finely-branched, pale orange hair. Scutum 
closely covered with long, finely-branched, pale orange hair; 
fore basitarsus with long white plume; mid trochanter and 
hind femur with very long, white, plumose hair. 
Female (SAM 32-024565 ).—Head width 4.60 mm, body 
length 13.9 mm. Relative dimensions: HW 50, HL 35, UID 31, 
UFW 34, LID 32, DMA 32, HVO 5, WOC 14, MOD 4, OOD 
9, IAD 8, ASD 3, AOD 10, ML 24, BMW 7, MSL 1.0, SL 15, 
SW 3, FL c. 33.— Eyes hairy; face broad, inner orbits parallel; 
length malar space c. 0.2x basal mandibular width; clypeus 
gently convex transversely; middle flagellomeres c. 1.4x as 
long as wide; inner hind tibial spur with c. 8 long teeth; tarsal 
claws simple; pygidial plate entire with flat or slightly upturned 
margin.—Integument black, except distitarsi orange-brown, 
legs occasionally, mandible, labrum apically and pygidial 
plate dark brown. Tl-4 with wide silver bands, ferruginous 
across anterior margin. —Clypeus weakly reticulate, closely 
to densely punctate; scutum dull with moderately strong 
pit-reticulation and close to dense, small punctures.— Face 
with long, plumose, white hair, open or close on clypeus and 
supraclypeal area, dense in paraocular areas and on frons; 
vertex with long, plumose, cream or pale brown hair. Scutum 
and scutellum with plumose, cream or pale brown hair of 
moderate length; prepygidial fimbria white or very pale brown. 
Remarks. Similar to T. brunilabrum n.sp., from which males 
may be distinguished by the shape of S7 and females by the 
absence of an inner ramus on the hind tarsal claw and the 
larger size. This species also resembles T. micans n.sp. and 
T. tuberatus n.sp. (see below). 
Etymology. The specific name is a Latin adjective meaning 
of a lake referring to several of the collection sites. 
Distribution. Arid regions of South Australia and coastal 
Western Australia north of Shark Bay (CAR, FLB, PIL, 
SSD) (Fig. 99). 
Trichocolletes latifrons (Cockerell) 
Figs 34, 63, 100 
Paracolletes latifrons Cockerell, 1914b, p. 41. 
Trichocolletes (Trichocolletes) latifrons. —Michener, 1965, p. 80. 
Specimens examined. The holotype % Coolangatta, Queensland, BMNH 
(Hym 17.a.486) and the following. New South Wales: <3, Wooloweyah 
(29.5172°S 153.3678°E), 28 Aug. 2007, M. Batley, ex Gompholobium 
virgatum, AM (K.316502); 3$, Yamba, 29 Aug. 1992, N. W. Rodd, AM 
(K.316697-99). Queensland: S, 5?, Burleigh, 25 Sep. 1958 and 3-15 
Sep. 1965, A. N. Burns, MV (16550-55); ?, Coolangatta, 11 Sep. 1913, 
QM (HY/2393). 
Diagnosis 
Length 12-13 mm; eyes not hairy; metasomal bands 
indistinct; clypeus short. Male clypeal hair relatively short, 
stiffly erect; mid basitarsus unmodified; ventral surface of 
hind femur with hair. Female tarsal claws with inner rami; 
T2-4 with white hair. 
Descriptions 
Male (AM K.316502), not previously described. —Head 
width 4.0 mm, body length 12.0 mm. Relative dimensions: 
HW 50, HL 36, UID 29, UFW 30, LID 32, DMA 30, HVO 
3, WOC 12, MOD 4, OOD 9, IAD 9, ASD 4, AOD 7, ML 
20, BMW 6, MSL 3, SL 12, SW 5, FL c. 55 .—Eyes not 
hairy; face broad, inner orbits strongly divergent ventrally; 
length malar space c. 0.6x basal width mandible; clypeus 
short (length 0.35x width); scape mildly swollen (width 
0.42x length); flagellum long, middle flagellomeres c. 1.7x 
