Acoenoniini

Jaschhof, Mathias, 2017, Catochini, Strobliellini and Acoenoniini revisited: a taxonomic review of the small tribes of the Micromyinae (Diptera: Cecidomyiidae), Zootaxa 4250 (3), pp. 275-295 : 290

Tribe Acoenoniini Pritchard

Pritchard (1960a) introduced this tribe for the genus Acoenonia Pritchard , at that time containing only the typespecies, A. perissa Pritchard. Acoenoniini are clearly distinct from other Micromyinae in both larval ( Mamaev & Krivosheina 1993: 81, 89f) and adult ( Jaschhof & Jaschhof 2009: 87f.) characters, the latter as follows. The wing membrane has a few or no distal setae; the costal break is situated far before the apex of the wing ( Fig. 9E ); the apices of the tibiae bear several scalelike, pointed spines marginally ( Jaschhof 1998: fig. 42h); and the antennal flagellomeres of males have indistinct crenulate whorls ( Fig. 9C ). Acoenoniini are thought to be the sister-group of Campylomyzini based on synapomorphies, such as the laterally incomplete eye-bridge and the ejaculatory apodeme modified apically and/or basally ( Jaschhof & Jaschhof 2009: 296). Acoenonia is the only genus of this tribe.

Figures

FIGURE 9 A – E. Acoenonia baltica, males. A: Genitalia, ventral (holotype). B: Gonostylus, dorsal (paratype). C: Fourth flagellomere, lateral (paratype). D: Palpus, lateral (holotype). E: Wing (paratype). Scales for A – D, 0.05 mm, for E, 0.5 mm.