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  1. Adventive Hylaeus (Spatulariella Popov) in the new world (Hymenoptera: Apoidea: Colletidae)
    By: Ascher, John S - Gambino, Parker - Droege, Sam
    Type: Article
    In: Proceedings of the Entomological Society of Washington.
    Volume: 108
    Date: 2006
    Page Range: 237--239
    Publication info: Washington, etc. :Entomological Society of Washington
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  2. Notes on the Birds of the Rio Platano Biosphere Reserve, Including Four New Species for Honduras
    By: Vallely, Andrew C - Gallardo, Robert J - Ascher, John S
    Type: Article
    In: Bulletin of the British Ornithologists' Club.
    Volume: 130
    Date: 2010
    Page Range: 52--60
    Publication info: London :British Ornithologists' Club,1893-
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  3. A Survey of the Bees of the Black Rock Forest Preserve, New York (Hymenoptera: Apoidea)
    By: Giles, Valerie - Ascher, John S
    Type: Article
    In: Journal of Hymenoptera research.
    Volume: 15
    Date: 2006
    Page Range: 208--231
    Publication info: Washington, D.C. :International Society of Hymenopterists,[1992-
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