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  1. By: Pitts, James P - Wilson, Joseph S
    Type: Article
    In: Journal of Hymenoptera research
    Volume: 18
    Date: 2009
    Page Range: 205--211
    Publication Info: Washington, D.C, International Society of Hymenopterists, [1992-
  2. By: Wilson, Joseph S - Pitts, James P
    Type: Article
    In: Journal of Hymenoptera research
    Volume: 18
    Date: 2009
    Page Range: 212--226
    Publication Info: Washington, D.C, International Society of Hymenopterists, [1992-