Amegilla (Asaropoda) albigenella Michener, 1965

Leijs, Remko, Dorey, James & Hogendoorn, Katja, 2020, The genus Amegilla (Hymenoptera, Apidae, Anthophorini) in Australia: a revision of the subgenus Asaropoda, ZooKeys 908, pp. 45-122 : 45

Amegilla (Asaropoda) albigenella Michener, 1965 Figure 4A-M

Amegilla (Asaropoda) albigenella Michener 1965: 217.

Asaropoda albigena Rayment, 1931: 182.

Specimens examined.

17 males, 12 females.

Holotype of A. albigena , male, Landor Stn, 29-882, WAM 23013.

Diagnosis.

Male with almost triangular patch of light brown stiff bristles on S4 and emarginate apicomedial area of S5 surrounded by dense branched hairs, lateral corners of S5 protruding. Female paraclypeal and supraclypeal marks present, tibial scopa ochre, T2 with a few black hairs anteriorly, process on S6 large narrow, posteriorly with angular smooth ridge Fig. 4L ).

Redescription.

Male (SAMA 32-033598, RL0456) Body length 14 mm, forewing length 10.1 mm, head width 4.7 mm.

Structure: Inner orbits of eyes diverging above; head wider than long; clypeal protuberance in profile 0.87 × eye width; mandible with small subapical tooth; F1 equal to combined length of next 2.3 flagellomeres; F1 0.87 × as long as scape; F2 0.6 × as long as F3; F3-F10 1.25 × as long as wide; last flagellomere 0.78 × as long as F1; marginal cell length 0.72 distance from apex of cell to wing tip; cu-v of hind wing longer than second abscissa of M+Cu; S5 with apicomedial emargination circa five times as wide as deep; posterior lateral corners drawn into distinct lobe, S6 with apicomedial emargination circa 3.5 × as wide as deep; emargination preceded by parabolic raised smooth ridge.

Genitalia: penis valves with well extended shoulders; volsella with circa ten long setae (Fig. 4H ); gonocoxa laterally with setae lacking; apex of gonocoxa with broadly rounded dorsal lobe and small ventral lobe; outer gonostylus robust, with strong setae on inner surface; inner gonostylus very small, reduced to transparent membrane (Fig. 4G ); S7 (Fig. 4E ); S8 narrowed towards apex, slightly emarginate (Fig. 4F ).

Pubescence: Head white, apart from pale yellow on vertex, a few dark hairs below ocelli, scutum, scutellum and metanotum with pale orange hairs intermixed with dark hairs, mesosoma laterally pale orange on dorsal half under the wing base, remaining hairs white, fore leg with pale yellow, mid femur mid and hind tibia and tarsus pale orange on outer surfaces, femur, tibia and tarsus on inner surfaces black-brown, metasomal terga with pale orange hairs, T2 anteriorly with wide band of black hairs; T3 with few black hairs in anterolateral corners, S1-S5 with pale yellow hairs, S4 apicomedial area with triangular patch of brown anteromedially-directed bristles, circa 1/3 the width of the sterna (Fig. 4C ), S5 area preceding the emargination covered in long brown branched posteromedially directed hairs; S5 laterally with plumes of long orange hairs on posteriolateral lobes, S6 with patch of orange stiff hairs posterior to rounded ridge, longer branched hairs in the emargination.

Colouration: Integument of head black, apart from scape orange-brown, flagellum brown below, black above, labrum pale yellow with translucent dots near dorsolateral corners, clypeus pale yellow, supraclypeal area pale yellow, paraclypeal area pale yellow, mandible pale yellow at base, black at tip, proboscis orange-brown, mesosoma and anterior metasomal terga black; posterior margins of metasomal terga translucent orange; sterna orange-brown; legs: coxa, trochanter and femur and inner surface of tibia brown, remaining parts orange.

Female

redescription (VM 35933): Body length 14.5 mm, forewing length 10.6 mm, head width 5.2 mm.

Structure: Inner orbits of eyes diverging above; head wider than long; clypeal protuberance in profile 0.69 × eye width; mandible with subapical tooth; F1 equal to combined length of next 3 flagellomeres; F1 0.9 × as long as scape; F2 0.75 × as long as F3; F3-F10 slightly longer than wide; last flagellomere 0.6 × as long as F1; marginal cell length 0.76 × distance from apex of cell to wing tip; cu-v of hind wing as long as second abscissa of M+Cu; S6 with small angular raised median ridge (Fig. 4L ).

Pubescence: Head white, apart from pale yellow on vertex, a few dark hairs below ocelli; scutum, scutellum and metanotum with pale orange hairs intermixed with dark hairs; mesosoma laterally and ventrally pale orange under the wing base, remaining hairs pale yellow to white; fore leg pale yellow; mid and hind tibia and tarsus pale orange on outer surfaces, femur, and tibia and tarsus on inner surfaces black-brown; metasomal terga with pale orange hairs; T2 anteriorly only with a few erect black hairs; T3 without black hairs in anterolateral corners; T5 with brown prepygidial fimbria, T6 with strong orange-brown hairs flanking the pygidial plate and much darker at the apex; S1-S5 with pale yellow hairs and few stiff erect dark hairs on disks of S1-S4.

Colouration: Integument of head black, apart from: scape orange-brown, flagellum brown below, black above; labrum pale yellow with translucent dots near dorsolateral corners; clypeus pale yellow with large brown dorso lateral patches resulting in pale yellow midline; supraclypeal area pale yellow; paraclypeal area pale yellow; mandible pale yellow at base, black at tip; proboscis orange-brown. Mesosoma and anterior metasomal terga dark brown; posterior margins of metasomal terga somewhat translucent, sterna orange-brown; legs: coxa, trochanter and femur and inner surface of tibia brown, remaining parts orange.

Flower records.

Eremophila glabra, Eremophila alternifolia, Eremophila longifolia ( Scrophulariaceae ), Eucalyptus ( Myrtaceae ).

Distribution.

Figure 4I .

Figures

Figure 4. Amegilla (Asaropoda) albigenella Michener, 1965.