Batley & Houston: Australian bee genus Trichocolletes 
11 
SAM (32-024533^10); Orroroo, 1 Dec. 1938, ANIC; 4$, data as for 
holotype; S, Orroroo, 14 Jan. 1939, ANIC; 2$, 3?, Orroroo, 3 Mar. 1939, 
ANIC; 2$, Rev A. P. Burgess, SAM (32-024539,41). 
Diagnosis 
Eyes hairy; metasoma red with indistinct bands; T2 without 
dark marks laterally. Male scape and labrum black; hair on 
supraclypeal area shorter than on surrounding areas. 
Descriptions 
Male (holotype ).—Head width 4.20 mm, body length 12.0 
mm. Relative dimensions: HW 50, HL 37, UID 31, UFW 32, 
LID 29, DMA 29, HVO 4, WOC 14, MOD 4, OOD 9, IAD 
10, ASD 3, AOD 8, ML 19, BMW 6, MSL 1.5, SL 13, SW 3, 
LL c. 51.—Eyes hairy; face broad, eyes slightly convergent 
ventrally; length malar space c. 0.3x basal mandibular width; 
length flagellum equal to head width, middle flagellomeres 
c. 1.5x as long as wide. Legs robust; inner faces of fore and 
mid tibiae with angular ridge on distal half; fore basitarsus 
strongly broadened near calcar; hind tarsus l.lx as long as 
hind tibia; hind basitarsus 3.8x as long as wide; basitibial area 
carinate and elevated above surroundings, carina reduced to 
angular edge on proximal 40% of anterior margin (Lig. 25). 
Genital capsule similar to that for T. orientalis n.sp. (Lig. 
37); S7 (K.278549) posterior projections short and blunt, 
lateral lobes tapered with posterior margin crenulate (Lig. 
48).—Head and mesosoma black except flagellomeres L2-8 
yellow-brown ventrally, distitarsi orange-brown. Metasoma 
red, bands indistinct but occasionally with ill-defined gold 
reflections .—Clypeus with contiguous punctures except 
apical margin impunctate; scutum with dull sheen, moderate 
pit-reticulation and close, fine punctures .—Face with finely- 
branched, white hair, long, dense in paraocular areas, on 
frons and basal half clypeus; shorter, dense and stiffly erect 
on supraclypeal area. Scutum with close, long, plumose, very 
pale orange hair; fore basitarsus with plume; anterior margin 
of hind tibia with open fringe of long, white hair; metasomal 
terga sericeus with open, semi-adpressed, pale golden hair. 
Lemale (AM K.316640 ).—Head width 4.45 mm, body 
length 13.0 mm. HW 50, HL 34, UID 30, ULW 32, LID 30, 
DMA 32, HVO 4, WOC 13, MOD 3, OOD 9, IAD 9, ASD 
3, AOD 9, ML 17, BMW 7.5, MSL 1.5, SL 15.5, SW 2, LL 
c. 33 .—Eyes hairy; face broad, inner orbits parallel; malar 
space short (length c. 0.2x basal mandibular width); clypeus 
convex, basal half flattened sagittally; middle flagellomeres 
as long as wide; inner hind tibial spur with c. 8 long 
teeth; basitibial area elevated above surrounding surfaces, 
posterior margin with thickened ridge forming an irregular 
edge (Lig. 21); hind tarsal claw small inner ramus; pygidial 
plate entire with strong medial elevation.—Integument of 
head and mesosoma black except labrum amber; legs dark 
orange-brown; mandible medially, flagellum ventrally dark 
brown. Metasoma red with indistinct, narrow, gold bands; 
T2 without dark lateral marks .—Clypeus dull with weak 
pit-reticulation and close punctures, except near apical 
margin; supraclypeal area with smaller, dense punctures; 
scutum dull with moderately strong pit-reticulation and 
dense punctures .—Face with long, white hair, becoming 
pale orange towards ocelli, dense in paraocular areas and 
on frons, sparse on clypeus. Scutum with dense, minutely- 
branched, bright orange hair; hind tibial scopa pale orange; 
prepygidial fimbria orange. 
Etymology. The specific name is from the Latin adjective 
meaning clipped, referring to the hair on the supraclypeal 
area of the male. 
Distribution. South Australia and far western New South 
Wales (DRP, LLB, SSD, STP) (Pig. 84). 
Trichocolletes brunilabrum n.sp. 
Figs 49, 85 
Type. Holotype S, 7 km N Wongawol HS, Western Australia, 
29-30 Jul. 1983, T. P. Houston & R. P. McMillan, on flowers 
of Swainsona, in WAM 13651. 
Specimens examined. The holotype and the following. Western Australia: 
3(3, same data as holotype WAM (13648-50); % Belele, A. Snell, WAM 
(19118); 2$, Belele, WAM (13710-11); 3$, Boolathana Station (24.53°S 
113.78°E), 29 May-25 Aug. 1995, N. Hall, WAM (22207-08, 21024); 
$, Bush Bay (25.06°S 113.70°E), 23 May-23 Aug. 1995, N. Hall, WAM 
(21025); ?, 37 km SW Glenayle HS, 6-9 Aug. 1983, T. F. Houston & R. 
R McMillan, on flowers of Swainsona, WAM (13652); ^,13 km WSW 
Hamelin, 23 Aug. 1980, T. F. Houston, on flowers of Swainsona, WAM 
(13989); 3$, 30 km NW Lorna Glen HS, 10 Aug. 1983, T. F. Houston & 
R. P. McMillan, on Indigoferageorgei, WAM (13653-55); 3$, 31 kmESE 
Minnie Creek HS, 2 Sep. 1980, C. A. Howard & T. F. Houston, on flowers 
of Swainsona, WAM (13984-86). 
Diagnosis 
Length c. 11 mm; eyes hairy; scape black in both sexes; 
legs black; metasoma sericeous with moderately wide, 
silver bands, narrowly ferruginous across anterior margins; 
labrum without a tubercle; known only from western 
Australia. Male fore basitarsus with short hair only; S7 with 
narrow, rectangular lateral lobes. Lemale clypeus coarsely 
sculptured; hind tarsal claw with inner ramus. 
Descriptions 
Male (holotype).— Head width 3.60 mm, body length 11.1 
mm. Relative dimensions: HW 50, HL 37, UID 30, ULW 31, 
LID 29, DMA 28, HVO 4, WOC 14, MOD 4, OOD 8, IAD 
8, ASD 3, AOD 7, ML 17, BMW 7, MSL 2.5, SL 15, SW 
3, PL c. 52.— Eyes hairy, length malar space c. 0.25x basal 
mandibular width; length flagellum equal to head width, all 
flagellomeres longer than wide; hind tarsus 0.9x as long as 
hind tibia; hind basitarsus 4.4x as long as wide; posterior 
carina of basitibial area extends well beyond apex. Genital 
capsule similar to that for T. orientalis n.sp. (Pig. 37); S7 
with thin, rectangular lateral lobes and large basal teeth 
(Pig. 49).— Labrum amber with black suffusions; mandible 
medially amber; flagellum dark brown, paler ventrally; 
distitarsi apically orange-brown. Tl-5 with broad, silver 
bands.— Clypeus coarsely punctate, with moderately large, 
coalescent punctures and irregular, narrow interspaces; 
scutum with dull sheen, moderately strong pit-reticulation 
and close small punctures.— Face with dense, long, white 
hair. Scutum with close, long, finely-branched pale brown 
hair; fore basitarsus without distinct plume; hind femur with 
open fringe long white hair on anterior margin. 
Lemale (WAM13653).— Head width 3.90 mm, body length 
11.6 mm. Relative dimensions: HW 50, HL 37, UID 29, 
ULW 32, LID 35, DMA 30, HVO 3, WOC 15, MOD 4, 
