|The Mydidae (Diptera) of Costa Rica|
|Welch, JL, Kondratieff, BC|
|key, Leptomydinae, Messiasia, Mydas, Mydidae, Mydinae, Nemomydas, Neotropical, Protomydas|
The species of Mydidae occurring in Costa Rica are reviewed. Four genera and seven species are reported, including Nemomydas loreni, new species. Additionally, Mydas quadrilineatus Williston, new synonym, is synonymized under M. rufiventris Macquart.