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Cyrtosia nigrescens Zaitzev 1972

urn:lsid:organismnames.com:name:2185380

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850

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Cyrtosia nigrescens Zaitzev 1972

Zaitzev 1972. On the fauna of bee flies (Diptera, Bombyliidae) of Mongolia, 1. Nasekomye Mongol, 1(1) 1972: 845-880