Leioproctus (Colletellus) auricorneus Leijs

Leijs, Remko, Dorey, James & Hogendoorn, Katja, 2018, Twenty six new species of Leioproctus (Colletellus): Australian Neopasiphaeinae, all but one with two submarginal cells (Hymenoptera, Colletidae, Leioproctus), ZooKeys 811, pp. 109-168 : 128-129

Leioproctus (Colletellus) auricorneus Leijs sp. n. Figures 2E, 12 A–I

Specimens examined.

(1♂): Holotype male, 56 km SE of Alice Springs (24.1833S; 134.0167E), 03 Oct. 1978, Cardale, J., Malaise trap, ANIC 32-111658.

Diagnosis.

Ocellocular area smooth shiny openly punctate, metapostnotum shiny, but T1-2 dull and densely reticulate, flagellum orange. S7 ventral lobe large with long branched setae.

Female unknown.

Description.

Male holotype: body length: 4.9 mm; head width: 1.7 mm. Relative head measurements: HW 50, ASD 3.1, AOD 6.5, HL 40, IAD 10.8, LFW 26, OAD 16, OOD 9.2, OW 19, UFW 35, HW/HL 1.2, LFW/UFW 0.7. Relative wing measurements: MSR 1.22, FSR 0.96, SFR 0.96.

Structure: terga anteriorly almost not depressed; BTP rounded, elongated almost pointy; flagellum F1-7 orange, 8-11 brown; S7: dorsal apical lobe absent, ventral apical lobe large, branched setae present on posterior area of ventral apical lobe.

Sculpture: scutum smooth, with open small punctures; metapostnotum entirely smooth; T1 lineo-reticulate, T2-3 transverse lineo-reticulate; clypeus smooth, closely punctate; supraclypeal area smooth, closely punctate; ocellocular area smooth, openly punctate; frons smooth, openly to closely punctate.

Coloration: terga anteriorly black, posterior margins transparent brown; mandibles black with reddish tip; scape brown, dull.

Pubescence: scutum: long, open; scutellum: long, open; S5 posteriorly with very dense fringe of long white hairs.

Flower records.

No data.

Distribution.

Figure 12I.

Etymology.

The specific epithet refers to the orange coloured antennae.