Two new North American species of Syrphidae, with notes on Syrphus (Diptera). American Museum novitates ; no. 1690

Fluke, Charles Lewis, 1891-2005-10-062005-10-061954http://hdl.handle.net/2246/242610 p. : ill. ; 24 cm.Includes bibliographical references.936627 bytesapplication/pdfen-USQL1 .A436 no.1690, 1954Syrphus autumnalisParasyrphus groenlandicaSyrphusSyrphidae -- CanadaSyrphidae -- Arctic regionsSyrphidae -- United StatesInsects -- CanadaInsects -- Arctic regionsInsects -- United StatesTwo new North American species of Syrphidae, with notes on Syrphus (Diptera). American Museum novitates ; no. 1690text