6 
Records of the Australian Museum (2012) Vol. 64 
36(35) Metasomal bands silver; mid basitarsus slender, bowed 
longitudinally . T. avialis n.sp. 
- Metasomal bands gold; mid basitarsus broad, with stiff setae 
on anterior margin . T. nitens n.sp. 
37(35) Pedicel, flagellum and scape concolorous ventrally. T. centralis n.sp. 
- Pedicel and flagellomere FI ventrally, darker than scape. 38 
38(37) Metasomal bands wide, silver, margin ferruginous; clypeus 
flattened . T. platyprosopis n.sp. 
Metasomal bands gold; clypeus convex. 39 
39(38) Clypeus black . T. serotinus n.sp. 
- Clypeus largely orange-brown . 40 
40(39) S7 with step on posterior margin (Fig. 72); hind tibia orange . T. rufibasis 
- S7 without step on posterior margin (Fig. 76); hind tibia dark brown. T. soror n.sp. 
Key to females of the genus Trichocolletes 
1 Eyes hairy. 2 
- Eyes with minute setae only. 18 
2(1) Metasoma red-brown with indistinct gold bands . T. brachytomus n.sp. 
- Metastoma with distinct bands. 3 
3(2) Labrum dark brown or black, rarely with orange-brown suffusions. 4 
- Labrum clear orange-brown, rarely with darker suffusions. 9 
4(2) Hind tarsal claw with small inner ramus. 5 
- All claws simple . 7 
5(4) Labrum with medial tubercle . T. tuberatus n.sp. 
- Labrum uniformly convex. 6 
6(5) Clypeus with moderately small punctures and reticulate interspaces . T. micans n.sp. 
—— Clypeus with coarse, almost contiguous punctures. T. brunilabrum n.sp. 
7(4) Gena half as wide as eye; vertex not elevated (Ligs 12-13) . T. lacaris n.sp. 
- Gena c. % as wide as eye; vertex elevated (Ligs 10-11). 8 
8(7) Scutal hair ferruginous, dense; clypeus flattened medially . T. maximus n.sp. 
- Scutal hair pale orange, close; clypeus uniformly convex . T. grandis n.sp. 
9(3) Clypeus flattened sagittally . 10 
—— Clypeus transversely convex, not flattened. 14 
10(9) Pygidial plate with deep linear emargination. T. dowerinensis 
- Pygidial plate with at most small emargination . 11 
11(10) Metasomal integumental bands wide, brassy. T. aeratus n.sp. 
- Metasomal integumental bands narrow, silver. 12 
12(11) Length subantennal suture > Vi dorsal width clypeus . T. capillosus n.sp. 
- Length subantennal suture < Vi dorsal width clypeus . 13 
13(12) Lateral epistomal suture curved . T. leucogenys n.sp. 
—— Lateral epistomal suture straight . T. dundasensis n.sp. 
14(9) Malar space short (length c. O.lx basal mandibular width) . T. albigenae n.sp. 
- Malar space > 0.2x basal mandibular width . 15 
