Laetodon

There are five myrmecophilous species in this genus. Vein R4+5 with posterior appendix. Postpronotum pilose. Abdomen oval. Anepisternum widely bare medially. Propleuron pilose. Postero-apical corner of cell r4+5 rectangular. Eye pilose.

The species included in this genus used to be placed in Microdon ( Thompson 1981b ). Morphology of the male genitalia, however, is quite distinct from that of Microdon as defined in the present paper: the phallus is short and unfurcate, the epandrium lacks the ventrolateral ridge. Based on these morphological differences and the phylogenetic results of Reemer and Ståhls, Laetodon is here erected as a new genus. See Chrysidimyia for discussion on possible relationships with that genus.