Medomega, Winterton, Shaun L. & Lambkin, Christine L., 2012

Winterton, Shaun L. & Lambkin, Christine L., 2012, New Australian stiletto flies: revision of Manestella Metz and description of Medomega gen. n. (Diptera, Therevidae, Agapophytinae), ZooKeys 240, pp. 1-119 : 19-21

Medomega gen. n.

Type species:

Medomega danielsi sp. n.

Diagnosis.

Body length 6.0-9.0 mm. Body usually covered with dense glaucous grey pubescence; head higher to much higher than long, pronounced ventral projection of head; male frons width variable, ranging from narrower than anterior ocellus to slightly wider than ocellar tubercle, eyes not contiguous; ocellar tubercle raised, black with short, dark setae in both sexes; antennae length variable; scape cylindrical, sometimes bulbous with strong setae, length variable but usually not longer than flagellum; flagellum turbinate with apical style; parafacial pile present but never extensive, rarely absent; face not concave, flat, grey pubescent; palpus 2-segmented, apical segment relatively short; prosternal depression without setae; metanepisternum with post-spiracular setae absent; posterior surface of mid coxa usually bare, sometimes pilose; wing vein R2+3 reflexed anteriorly with kink approximately midway; cell m3 open (Fig. 71); femoral velutum patches absent; fore femur sometimes with pd setae; hind femur with one or more subapical av setae; abdominal tergite 2 often with patch of short setae medially; wing infuscate brown and translucent white, mottled to fenestrate; hind coxal knob present; gonocoxite extended posterolaterally; inner gonocoxal process present; dorsal and ventral apodemes of parameral sheath joining along distiphallus, both forked; pubescence sparsely present on gonocoxites; three spermathecae joined to spermathecal sac duct; spermathecal sac present; acanthophorite spines A1 and A2 present, well developed.

Comments.

Medomega gen. n. is a distinctive genus differentiated from other agapophytine therevids based on the absence of velutum on the femora, cell m3 open, head typically higher than long, and mottled wings with vein R2+3 reflexed (Fig. 71). In the key to genera by Winterton (2011) Medomega gen. n. can be identified by modifying the existing couplets as follows:

Etymology.

The genus name is derived from the Greek, medos, counsel, plan and mega, very great; referring to the aristocratic shape of the head.

Included species.

Medomega averyi sp. n.; Medomega bailmeup sp. n.; Medomega chlamydos sp. n.; Medomega danielsi sp. n.; Medomega gigasathe sp. n.; Medomega nebrias sp. n.;

Key to species of Medomega gen. n.