40 
Records of the Australian Museum (2012) Vol. 64 
Remarks. There are many similarities between this species 
and T. rufibasis. Males may be distinguished from T. rufibasis 
by the stiffer hair clypeal hair, darker legs, colour of first 
flagellomere (paler ventrally than in T. rufibasis ) and non- 
sinuate posterior margin of S7. Females may be distinguished 
from T. rufibasis by the deep emargination of the pygidial 
plate, the uniformly convex clypeus and the red, rather than 
orange, colour on areas of the metasoma. 
This species is referred to as F262/M233 (part) in Houston 
( 2000 ). 
Distribution. Coastal Western Australia near Geraldton (GS, 
YAL) (Fig. 116). 
Etymology. The specific name is a Latin noun meaning sister, 
referring to the similarity between this species and T rufibasis. 
Trichocolletes tenuiculus Rayment 
Figs 77, 117 
Trichocolletes tenuiculus Rayment, 1931, p. 162. 
Trichocolletes (Trichocolletes) tenuiculus. — Michener, 
1965, p. 80. 
Specimens examined. The holotype S, Canowindra, New South Wales, 
Aug. 1930, M. Dwyer, ANIC and the following. Australian Capital 
Territory: S, 1.9 km S Condor Ck Bridge Rd, Brindabella Ra., 27 Sep. 
1993, G. J. Davis & G. V. Maynard, off Daviesia and Hardenbergia 
violacea, MY; <3\ 2^, Pierces Creek Forrest, 26 Sep. 1993, G. J. Davis 
& G. Y. Maynard, off Hardenbergia violacea, MV; <$, Uriara Crossing 
Rd Uriara Forest, 12 Aug. 1994, G. J. Davis & G. V. Maynard, MV 
(940553); 10<3\ Vanitys Crossing Rd Uriara Forest, 25 Aug. 1994, G. 
J. Davis, Hardenbergia, MV (940545-52,54,55). New South Wales: 
S, 3?, Doyles Creek (32.5219°S 150.7972°E), 19-22 Aug. 2005, 
M. Batley, AM (K.316543-46); 3d 1 , 3?, Mount Canobolas (33.33°S 
148.98°E), 24-25 Sep. 2005, M. Batley, AM (K.316552-57); AS, 
Mount Canobolas (33.3320°S 148.9850°E), 4-9 Sep. 2002, M. Batley, 
AM (K.316536-39,42); % Mount Canobolas (33.3497°S 149.0164°E), 
28 Sep. 2005, M. Batley, AM (K.316559); S, Mullion Flora Res. (33.11°S 
149.17°E), 27 Sep. 2005, M. Batley, AM (K.316558); 2$, Paling Yards 
(33.3570°S 148.9129°E), 7 Sep. 2002, M. Batley, AM (K.316540-41); 
Penrose State Forest (34.6589°S 150.2305°E), 4 Sep. 1999, M. Batley, 
AM (K.316533); ?, Tallong (34.7194°S 150.5639°E), 30 Sep. 2000, M. 
Batley, AM (K.316535); d>,4$,Wollar(32.3608°S 149.9214°E), 10 Sep. 
2005, M. Batley, AM (K.316547-51); S, Mullion Range (33.1703°S 
149.1828°E), 5 Sep. 2009, M. Batley, AM (K.316614); $, Willow Tree, 
1 Sep. 1953, ANIC. 
Diagnosis 
Length c. 13 mm; eyes hairy; metasomal bands narrow, 
silver with brown anterior margins. Male fore basitarsus 
with a weak fringe rather than plume, S7 lateral lobes 
broadly triangular with truncated ends; scapes frequently 
with dark suffusions. Female flagellum with relatively long 
FI; frontal carina frequently ends in a small tubercle on the 
supraclypeal area. 
Descriptions 
Male (AM K.316557).— Head width 4.25 mm, body length 
12.8 mm. Relative dimensions: HW 50, HL 41, UID 29, 
UFW 29, LID 29, DMA 29, HVO 4, WOC 13, MOD 4, 
OOD 8, IAD 9, ASD 4, AOD 6, ML 19, BMW 7, MSL 2.0, 
SL 13, SW 3, FL c. 53.— Face narrow; length malar space 
c. 0.25x basal mandibular width; flagellum slightly longer 
than head width; middle flagellomeres c. 1.6x as long as 
wide. Legs slender; hind tarsus 1.25x as long as hind tibia; 
hind basitarsus 5.3x as long as wide; basitibial area slightly 
elevated above surroundings, pigmented posterior carina 
almost reaches apex. Genital capsule similar to that for T. 
orientalis n.sp. (Fig. 37); S7 lateral lobes broadly triangular 
with truncated ends, posterior projections very small (Fig. 
77).— Scape, tibiae, tarsi and distal ends femora orange- 
brown, with darker suffusions on fore and mid tibiae and 
faint suffusions on scape; labrum and mandible medially 
amber; flagellum dark brown. Tl-5 with narrow silver 
bands stained brown across anterior margin. —Clypeus with 
contiguous punctures except at extreme apex; scutum with 
dull sheen, moderately strong pit-reticulation and small, 
close punctures.— Face densely covered with long, erect, 
finely-branched, dull orange hair. Scutum openly covered 
with similar plumose hair; fore basitarsus with weak fringe, 
length < 2x width basitarsus. 
Female (AM K.316556).— Head width 4.20 mm, body 
length 13.3 mm. Relative dimensions: HW 50, HL 40, 
UID 29, UFW 31, LID 31, DMA 31, HVO 4, WOC 14, 
MOD 3, OOD 8, IAD 9, ASD 4, AOD 8, ML 23, BMW 8, 
MSL 2.0, SL 15, SW 3, FL c. 36.— Face almost quadrate; 
inner orbits parallel; length malar space c. 0.25x basal 
mandibular width; clypeus transversely convex, slightly 
flattened basomedially, basal margin weakly concave; 
supraclypeal area with small tubercle marking end of frontal 
carina; flagellomere FI relatively long (length 2.Ox width); 
inner hind tibial spur with c. 7 coarse teeth; tarsal claws 
simple; pygidial plate with small emargination. —Labrum 
and fore basitarsi orange-brown; remainder of legs dark 
brown; mandible medially brown. Tl-4 with narrow silver 
bands stained brown across anterior margin. —Clypeus 
densely punctate on a reticulate ground except openly 
punctured near apex; supraclypeal area densely punctate, 
some punctures coalescing to form irregular grooves. 
Scutum with dull sheen, pit-reticulation and small, close 
punctures.— Face with long, off-white, plumose hair, 
becoming pale orange tipped with dark brown near ocelli, 
dense on frons and in paraocular area, sparse on clypeus 
and supraclypeal area. Scutum closely covered with short, 
plumose, pale orange hair tipped with dark brown; hair of 
hind tibial scopa orange-brown with golden reflections, 
dark in basitibial area; prepygidial fimbria mid-brown. 
Remarks. The holotype male has abnormal wing venation 
as described by Rayment (1931) and a female in the same 
collection, labelled “TYPE”, Canowindra, NSW, agrees with 
Rayment’s description of a female “allotype”. 
Similar to T.fuscus n.sp. and T. orientalis n.sp. from which 
males may be distinguished by the weak fringe rather than a 
plume on fore basitarsus and the shape of S7, while females 
may be distinguished from T. fuscus n.sp. and T. orientalis 
n.sp. by the relatively long FI and the small tubercle on the 
suraclypeus. 
Distribution. Tablelands and slopes of New South Wales 
(NSS, SB, SEH) (Fig. 117). 
