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Cresson, Ezra T., Jr. 1949. A systematic annotated arrangement of the genera and species of the North American Ephydridae (Diptera). IV. The subfamily Napaeinae.

Cresson, Ezra T., Jr. 1949. A systematic annotated arrangement of the genera and species of the North American Ephydridae (Diptera). IV. The subfamily Napaeinae. Transactions of the American Entomological Society 74(3&4): 225-265.
A systematic annotated arrangement of the genera and species of the North American Ephydridae (Diptera). IV. The subfamily Napaeinae.
Cresson, Ezra T.
Transactions of the American Entomological Society (Online: http://taes.entomology-aes.org/pages/show/index Print: 0002-8320 Online: 0886-1145 Print: 0002-8320 )
74
3&4
225-265
1949

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