Oxaeinae Ashmead

Engel, Michael S., 2015, A review of the genera and subgenera of Oxaeinae (Hymenoptera: Andrenidae), Journal of Melittology 2015 (52), pp. 1-18 : 3-4

Subfamily Oxaeinae Ashmead

Oxaeinae Ashmead, 1899: 70 . Type genus: Oxaea Klug, 1807a .

DIAGNOSIS: Moderately large (13–26 mm), robust, setose bees ( Figs. 1–4 , 7–10 , 13– 15 , 18–21 , 25, 26 , 28–32 , 35–37 ). Head with clypeus protuberant; labrum as long as or longer than broad; lacinia composed of reduced sclerites hidden on inner side of stipes at base of galea; mentum and submentum fused into a single plate; basal labial palpomere flattened and elongate; malar area linear; facial foveae absent; ocelli low on face, near antennal toruli ( Figs. 5, 6 , 11, 12 , 16, 17 , 22, 23 , 27 , 33, 34 , 38 ); orbits of compound eyes in males converging above ( Figs. 5 , 12 , 17 , 23 , 27 , 34 ); antennal toruli separated from epistomal sulcus by less than torular diameter; two subantennal sulci, outer sulcus arched; first flagellomere as long as or longer than scape ( Figs. 5, 6 , 11, 12 , 16, 17 , 22, 23 , 27 , 33, 34 , 38 ); preepisternal sulcus absent below scrobal sulcus; forewing with pterostigma virtually absent; marginal cell narrow and elongate, longer than distance from apex to wing tip, apex bent away from margin and appendiculate (resembling to some degree a narrowly truncate marginal cell analogous to Panurginae ) ( Figs. 2, 4 , 14 , 21 , 24 , 28 , 32 ); three submarginal cells; distal portion of wing papillate; female metafemoral apex enlarged and flattened to form a plate associated with metabasitibial plate ( Figs. 2 , 8 , 19 , 36 ); scopa abundant from metacoxa to metabasitarsus; pretarsal claws cleft, arolia reduced; female pygidial plate present; male metasomal sterna VII and VIII with large discs (refer to figures in Hurd & Linsley, 1976, and Ascher et al., 2006); male genital capsule tapering basally, gonobase small; volsella elongate, digitus and cuspis fused; penis valve and aedeagus fused (refer to figures in Hurd & Linsley, 1976, and Ascher et al., 2006). A complete description of the subfamily is provided by Hurd & Linsley (1976).

INCLUDED GENERA: Oxaea Klug, 1807a ; Protoxaea Cockerell & Porter, 1899 ; Mesoxaea Hurd & Linsley, 1976 ; Notoxaea Hurd & Linsley, 1976 ; and Alloxaea Ascher , Engel, & Griswold, 2006.

Figures

Figure 24. Photograph of wing venation of Notoxaea ferruginea (Friese).

Figure 28. Photograph of dorsal habitus of holotype female of Oxaea (Oxaea) festiva Smith.

Figures 29–34. Photographs of Oxaea (Oxaea) flavescens Klug. 29. Dorsal habitus of female. 30. Dorsal habitus of male. 31. Lateral habitus of female. 32. Lateral habitus of male. 33. Facial view of female. 34. Facial view of male.

Figure 35. Photograph of dorsal habitus of lectotype male of Oxaea (Oxaea) flavescens Klug.

Figures 36–38. Photographs of female of Oxaea (Oxaea) stenocoryphe Moure. 36. Lateral habitus. 37. Dorsal habitus. 38. Facial view.

Figures 1–6. Photographs of Protoxaea gloriosa (Fox). 1. Dorsal habitus of female. 2. Lateral habitus of female. 3. Dorsal habitus of male. 4. Lateral habitus of male. 5. Facial view of male. 6. Facial view of female.

Figures 7–12. Photographs of Mesoxaea (Mesoxaea) nigerrima (Friese). 7. Dorsal habitus of female. 8. Lateral habitus of female. 9. Dorsal habitus of male. 10. Lateral habitus of male. 11. Facial view of female. 12. Facial view of male.

Figures 13–17. Photographs of Mesoxaea (Heteroxaea) rufescens Hurd & Linsley. 13. Dorsal habitus of female. 14. Lateral habitus of female. 15. Dorsal habitus of male. 16. Facial view of female. 17. Facial view of male.

Figures 18–23. Photographs of Notoxaea ferruginea (Friese). 18. Dorsal habitus of female. 19. Lateral habitus of female. 20. Dorsal habitus of male. 21. Lateral habitus of male. 22. Facial view of female. 23. Facial view of male.

Figures 25–27. Photographs of male of Alloxaea brevipalpis (Ascher, Engel, & Griswold). 25. Lateral habitus. 26. Dorsal habitus. 27. Facial view.