Kessel is considered to be one of the leading authorities on the Platypezidae or flat-footed flies, with entomologists mailing specimens to him from around the globe.
The midge, Agathomyia wankowiczii (Platypezidae) lays its eggs on the fruiting body of the fungus forming galls.
Kessel, E. L. & Clopton, J. R. (1969): The Platypezidae of the Oriental zoogeographic region and islands to the east, with descriptions of four new species (Diptera).