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  1. By: Davidson, Ralph Howard - DeLong, Dwight M. (Dwight Moore),
    Type: Article
    In: Proceedings of the Entomological Society of Washington
    Volume: 37
    Date: 1935
    Page Range: 97--112
    Publication Info: Washington, etc, Entomological Society of Washington,
  2. By: DeLong, Dwight M. (Dwight Moore), - Davidson, Ralph Howard
    Type: Article
    In: Journal of the New York Entomological Society
    Volume: 42
    Date: 1934
    Page Range: 221--224
    Publication Info: Lawrence, Kan Allen Press [etc.]