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Microdon ursitarsis Stackelberg 1926
urn:lsid:organismnames.com:name:3406229
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Microdon ursitarsis Stackelberg 1926
Stackelberg 1926. Syrphidarum novorum palaearcticorum diagnoses (Diptera). Annales du Musee Zoologique Leningrad, 26(1925) 1926: pp. 87-92