Trichocolletes brunilabrum, Batley, 2012

Batley, Michael, 2012, Revision of the Australian Bee Genus Trichocolletes Cockerell (Hymenoptera: Colletidae: Paracolletini), Records of the Australian Museum (Rec. Aust. Mus.) 64 (1), pp. 1-50 : 11-12

Trichocolletes brunilabrum n.sp.

Figs 49, 85

Type. Holotype ♂, 7 km N Wongawol HS, Western Australia, 29–30 Jul. 1983, T. F. Houston & R. P. McMillan, on flowers of Swainsona , in WAM 13651.

Specimens examined. The holotype and the following. Western Australia: 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 . P. 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 Indigofera georgei, WAM (13653–55) ; 3♀, 31 km ESE 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. Female 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, UFW 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, FL c. 52.— Eyes hairy, length malar space c. 0.25× basal mandibular width; length flagellum equal to head width, all flagellomeres longer than wide; hind tarsus 0.9× as long as hind tibia; hind basitarsus 4.4× as long as wide; posterior carina of basitibial area extends well beyond apex. Genital capsule similar to that for T. orientalis n.sp. (Fig. 37); S7 with thin, rectangular lateral lobes and large basal teeth (Fig. 49).— Labrum amber with black suffusions; mandible medially amber; flagellum dark brown, paler ventrally; distitarsi apically orange-brown. T 1–5 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.

Female ( WAM 13653).— Head width 3.90 mm, body length 11.6 mm. Relative dimensions: HW 50, HL 37, UID 29, UFW 32, LID 35, DMA 30, HVO 3, WOC 15, MOD 4,

OOD 8, IAD 7, ASD 3, AOD 9, ML 15, BMW 8, MSL 2.0, SL 15, SW 3, FL c. 29.— Eyes hairy; length malar space c. 0.15× basal mandibular width; clypeus gently convex, basal suture shallowly V-shaped; middle flagellomeres c. 1.1× as long as wide; inner hind tibial spur with c. 8 long teeth; hind tarsal claw with distinct, sharp inner ramus, mid tarsal claw with minute inner ramus, fore tarsal claw simple; pygidial plate with medial elevation and small emargination.— Labrum, mandible medially dark brown; distitarsi apically orange-brown. T 1–4 with wide silver bands, narrowly ferruginous across anterior margins.— Clypeus strongly reticulate, coarsely punctate with large dense punctures partially coalescent. Scutum dull with strong pit-reticulation obscuring punctures.— Face with long white plumose hair, becoming pale brown hair near ocelli, dense in paraocular areas and on frons, sparse on clypeus and supraclypeal area. Scutum with close, plumose, pale orange-brown hair; tibial scopa brown medially, white laterally; prepygidial fimbria pale brown.

Remarks. The sexes were associated by morphological similarity and geographic distribution only. This species is referred to as F 267 in Houston (2000).

Distribution. Predominantly east from Shark Bay, Western Australia, with one record from near Perth ( CAR, GAS, MUR, SWA) ( Fig. 85 ).

Figures

Figs 80–91. Known distribution of Trichocolletes species.