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  1. By: Oester, P T - Ryker, L C - Rudinsky, J A
    Type: Article
    In: The Coleopterists' Bulletin
    Volume: 32
    Issue: 2
    Date: 1978-06
    Page Range: 93--98
    Publication Info: [Washington, D.C. etc.], Coleopterists' Society,
  2. By: Ryker, L C
    Type: Article
    In: The Pan-Pacific entomologist
    Volume: 51
    Issue: 3
    Date: 1975
    Page Range: 184--194
    Publication Info: San Francisco Pacific Coast Entomological Society