Afromicrodon Thompson

Reemer, Menno & Stahls, Gunilla, 2013, Generic revision and species classification of the Microdontinae (Diptera, Syrphidae), ZooKeys 288, pp. 1-213 : 16-17

Afromicrodon Thompson Figs 3-6

Afromicrodon Thompson, 2008: 26 (in Cheng and Thompson 2008). Type species: Microdon johannae van Doesburg, 1957: 109, by original designation.

Description.

Body length: 6-9 mm. Relatively small flies with short antennae and oval abdomen. Head slightly wider than thorax. Face evenly convex; narrower than an eye. Lateral oral margins not produced. Vertex flat. Occiput narrow over entire length. Eye bare. Eyes in male strongly approaching each other at level of frons; with mutual distance about equal to width of antennal fossa. Antennal fossa about as high as wide. Antenna shorter than distance between antennal fossa and anterior oral margin. Basoflagellomere approximately as long as scape; oval, short; bare. Postpronotum pilose. Anepisternum without sulcus; pilose, except bare on ventral 1/4. Anepimeron pilose on dorsal half, bare on ventral half. Katepimeron convex; bare. Scutellum semicircular; without calcars. Wing: vein R4+5 without appendix; vein M1 anterior half directed somewhat outward, making acute angle with R4+5, posterior half perpendicular to vein M; crossvein r-m located around basal 1/4 of cell dm. Abdomen oval. Male genitalia: phallus straight, not furcate; hypandrium with bulb-like base and basolateral bulges; epandrium without ventrolateral ridge; surstylus large: about as long as hypandrium, somewhat sickle-shaped.

Diagnosis.

Vertex flat. Occiput narrow. Antenna shorter than distance between antennal fossa and anterior oral margin. Postpronotum pilose. Katepimeron bare. Vein R4+5 without posterior appendix. Abdomen oval.

Diversity and distribution.

Described species: 5. Restricted to Madagascar and the Comorean islands.