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  1. By: Pitkin, B R
    Type: Article
    In: Proceedings of the Entomological Society of Washington
    Volume: 80
    Date: 1978
    Page Range: 264--295
    Publication Info: Washington, etc, Entomological Society of Washington,
  2. By: Pitkin, B R
    Type: Article
    In: Bulletin of the British Museum (Natural History) Entomology
    Volume: 26
    Date: 1972
    Page Range: 371--402
    Publication Info: London, The Museum, 1950-1977
  3. By: Pitkin, B R
    Type: Article
    In: Bulletin of the British Museum (Natural History) Entomology
    Volume: 34
    Date: 1976
    Page Range: 221--280
    Publication Info: London, The Museum, 1950-1977
  4. By: Pitkin, B R
    Type: Article
    In: Bulletin of the British Museum (Natural History) Entomology
    Volume: 34
    Date: 1976
    Page Range: 223--280
    Publication Info: London, The Museum, 1950-1977