22 
Records of the Australian Museum (2012) Vol. 64 
T. venustus T. nitens n.sp. 
Figs 10-13. Faces of female Trichocolletes with elevated (10 and 11) or normal (12 and 13) vertex. 
mid tibiae and flagellomeres F2-7 ventrally, orange-brown. 
Tl-5 with moderately broad, silver bands .—Clypeus with 
dense, fine punctures except rim impunctate and polished, 
scutum dull with strong pit-reticulation and small, close to 
dense punctures .—Face with dense, long, pale orange hair, 
finely-branched on clypeus, becoming plumose towards 
vertex, gena with very dense, finely-branched white hair. 
Scutum closely covered with long, plumose, pale orange 
hair, fore basitarsus with pale gold plume, anterior margin 
of hind tibia with sparse fringe long, white hair, metasoma 
with scattered, erect, white hair in addition to the normal 
semi-adpressed hair matching the underlying integument. 
Female (AM K.344714 ).—Head width 4.05 mm, body 
length 13.0 mm. Relative dimensions: HW 50, HL 40, UID 
31, UFW 33, LID 33, DMA 34, HVO 5, WOC 14, MOD 
3, OOD 9, IAD 9, ASD 3, AOD 10, ML 18, BMW 8, MSL 
1.0, SL 15, SW 3, FL c. 33 .—Eyes hairy, length of setae as 
for male, face broad, inner orbits approximately parallel, 
malar space short (length c. O.lx basal mandibular width), 
clypeus convex both longitudinally and transversely with 
small longitudinal depression medially, vertex elevated, gena 
0.85x as wide as eye viewed laterally, middle flagellomeres 
as long as wide, inner hind tibial spur with c. 7 teeth, tarsal 
claws simple, pygidial plate broad, entire, without medial 
elevation .—Mandible medially red-brown. Tl-4 with 
moderately broad, silver bands .—Clypeus reticulate with 
large, close to dense punctures, sculpture of scutum as for 
male .—Face with long, white, finely-branched hair, close 
to dense in paraocular areas and on frons, open on clypeus, 
gena with close to dense long, white, finely-branched hair. 
Scutum with close to dense moderately long, plumose, pale 
orange hair. Tl-4 with weak but distinct apical hair bands 
covering the silver integumental bands, prepygidial fimbra 
pale brown, tibial scopa white, darker near basitibial area. 
Etymology. The specific name is a Latin adjective referring 
to the relatively large size of this species. 
Distribution. Arid areas of western New South Wales and 
South Australia (BHC, DRP, RIV, STP) (Fig. 97). 
