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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.
|Genus and species||Author and Year||Ant Host||Distribution||Notes|
|Laetodon geijskesi||Doesburg, 1966||ants||Brazil, Costa Rica|
|Laetodon laetoides||Curran, 1935||ants||Arizona|
|Laetodon laetus||Loew, 1864||ants||Georgia, Kansas, Illinois, Tennessee, Texas|
|Laetodon solitarius||Curran, 1930||ants||Nearctic|
|Laetodon violens||Townsend, 1895||ants||Nearctic|
- X.-Y. Cheng and F. C. Thompson, “A generic conspectus of the Microdontinae (Diptera: Syrphidae) with the description of two new genera from Africa and China,” Zootaxa, vol. 1879, pp. 21– 48, 2008.
- Curran, C.H. 1930. New Syrphidae from Central America and the West Indies. American Museum Novitates 416, 11 pp. [1930.03.26
- Reemer, M. & G. Stahls 2013. Phylogenetic relationships of Microdontinae (Diptera: Syrphidae) based on molecular and morphological characters. Systematic Entomology 38 (4): 661-688.
- Reemer, M, Stahs, G. 2013. Generic revision and species classification of the Microdontinae (Diptera, Syrphidae). ZooKeys 288:1-213.