Taxonomic revision of the mydas-fly genera Eremohaplomydas Bequaert, 1959, Haplomydas Bezzi, 1924, and Lachnocorynus Hesse, 1969 (Insecta, Diptera, Mydidae) Author Boschert, Claire Rice University, Houston, TX, USA Author Dikow, Torsten https://orcid.org/0000-0003-4816-2909 Department of Entomology, National Museum of Natural History, Smithsonian Institution, 10 th Street and Constitution Avenue NW, Washington, DC 20560, USA dikowt@si.edu text African Invertebrates 2022 2022-03-25 63 1 19 75 http://dx.doi.org/10.3897/afrinvertebr.63.76309 journal article http://dx.doi.org/10.3897/afrinvertebr.63.76309 2305-2562-1-19 F849C700225A4923AE1962882F933E83 B0655A9F7BBC582691EC0F00E156BA38 Haplomydas Bezzi, 1924 GBIF: https://www.gbif.org/species/1591511 Haplomydas Bezzi, 1924: 199 . Heleomydas Seguy , 1929 - junior synonym; ZooBank http://zoobank.org/48330D1D-A176-4042-9F3C-97EC14FCD173 Type-species: Haplomydas crassipes Bezzi, 1924 , by original designation. Diagnosis. The genus can be delineated by the greatly expanded metathoracic femora, the distinct ventral keel terminating into a spur on the metathoracic tibiae, the presence of setae on the posterior anepisternum, the yellow to light brown colouration, and the absence of M3+M4 terminating into the costa. Distribution, biodiversity hotspots, phenology, and biology. Known from diverse localities in Botswana, Mozambique, Namibia, and Zimbabwe (Fig. 57 ). A relatively commonly collected genus with collecting events between 1917 and 1999 (Table 1 ). The genus occurs in the Eastern Afromontane biodiversity hotspot in eastern-most Zimbabwe (Fig. 57 ). Adult flies are active in late summer to autumn (Table 2 ). Nothing is known of the biology.