Leioproctus (Zosterocolletes), 2013

Maynard, Glynn Vivian, 2013, Revision of Goniocolletes and seven Australian subgenera of Leioproctus (Hymenoptera: Apoidea: Colletidae), and description of new taxa, Zootaxa 3715 (1), pp. 1-114 : 93-94

Leioproctus (Zosterocolletes) subgen.n.

This subgenus is erected for 3 species placed by Michener (1965) in Leioproctus (Leioproctus) . At that time, he considered them part of a group of species that might, in future warrant subgeneric status. The main characters that distinguish the subgenus are: the seventh metasomal sterna of the males with 4 apical lobes; ocelloccipital area depressed; sternal fringes in males and apical tergal hair bands in females.

Type species— Andrena advena Smith, 1862 .

Diagnosis — Ocelloccipital area strongly depressed; vertex depressed below eye level, propodeal triangle vertical; fore wing with small, parallel sided pterostigma; female inner hind tibial spur with 1–2 strong, broadly separated teeth; female metasomal terga with narrow, complete hair bands; male S7 with 4 apical lobes.

Description — Head— Hair, white, very dense in males, obscuring integument; facial foveae in females indicated by change in surface texture; frons flat; scape reaching beyond median ocellus; female F1 with length greater than width, longer than F3; F3–10 with length about equal to width and F2 with length less than width; male F1 with length about equal to width, F3–11 with length greater than width; apex of supraclypeal area raised above frons level; frontal line ending in a small tubercle at apex of supraclypeal area; epistomal suture weak, straight; clypeus convex, shallow; malar space polished, distinct, length about 0.5 x width of base of mandibles; gena about same width as eye, steeply sloping from eye in males, rounded in females; male mandibles long and slender; female mandibles broad throughout; labrum short; glossa with short apical fringe; maxillary palps reaching just beyond apex of glossa; labial palps short, not reaching apex of extended glossa. Mesosoma — Surface sculpture of scutum and scutellum small, weak punctures on smooth surface; hair long, moderately dense to dense, branched; metanotum without nodule, hair not differentiated from that of surrounds. Wings with dense hair over entire wing; membrane darkened in most species; first recurrent vein enters second submarginal cell about the middle. Legs of female with hind basitibial plate less than 0.2 x length of tibia, covered with stiff, simple hairs; tibial scopa dense, with coarse, monopodal hair. Metasoma— Weakly punctate and broadly rounded in both sexes; T1 with moderately dense, long, fine hair; female T2–4 with short, simple hair and narrow apical hair bands; female prepygidial fimbria coarse, sparse; Male T2–6 with fine, long hair; female sterna with long, fine, simple hair, except on apical margins where it is branched; male with sparse, fine, long, simple hair except for fringes of S4–5.

Etymology — Zoster is Greek for banded, refering to the bands on the female metasoma.

Key to species of Leioproctus (Zosterocolletes)

1 Female (with hind tibial scopa).......................................................................... 2

– Male (without hind tibial scopa)......................................................................... 4

2 Caudal fimbria orange.................................... .. Leioproctus (Zosterocolletes) ruficornis (Smith, 1879)

– Caudal fimbria black.................................................................................. 3

3 Western Australia ....................................... Leioproctus (Zosterocolletes) worsfoldi ( Cockerell, 1906)

– Eastern Australia............................................ Leioproctus (Zosterocolletes) advena (Smith, 1862)

4 Flagellum yellow, at least anteriorly; scutal hair orange.......... .. Leioproctus (Zosterocolletes) ruficornis (Smith, 1879)

– Flagellum black entirely; scutal hair yellow to white......................................................... 5

5 Hair of T2 long and shaggy, legs all black......................... Leioproctus (Zosterocolletes) advena (Smith, 1862)

– Hair of T2 short; tibiae and tarsi yellow..................... Leioproctus (Zosterocolletes) worsfoldi ( Cockerell, 1906)