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Author(s): <a href='https://dar.bibalex.org/en/Search/ExactResults.aspx?format_Id=1&author=Back%2C%20E.%20A.'> Back, E. A.
Publication Date: 1909.
Publisher(s): <a href='https://dar.bibalex.org/en/Search/ExactResults.aspx?format_Id=1&publisher=American%20Entomological%20Society%5D'> American Entomological Society]
Contributor(s): <a href='https://dar.bibalex.org/en/Contributor/ContributorItems.aspx?contributor=Biodiversity%20Heritage%20Library&format_id=1'> Biodiversity Heritage Library
Collection(s): <a href='https://dar.bibalex.org/en/Collection/CollectionItems.aspx?collection=Biodiversity%20Heritage%20Library&format_id=1'> Biodiversity Heritage Library
Category: <a href='https://dar.bibalex.org/en/Category/CategoryDetails.aspx?mainCat=Others&format_id=1'> Others
Subject(s): Diptera--North America. ,&nbsp; Robber flies
Keywords: Robber flies Diptera North America.

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The robber-flies of America north of Mexico belonging to the subfamilies Leptogastrinae and Dasypogoninae.