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  1. By: Rotheray, Graham E - Robertson, David M
    Type: Article
    In: British journal of entomology and natural history
    Volume: 10
    Date: 1998
    Page Range: 139--144
    Publication Info: [London], British Entomological and Natural History Society, 1988-
  2. By: Rotheray, Graham E - Barr, Boyd - Hewitt, Stephen M
    Type: Article
    In: The entomologist's record and journal of variation
    Volume: 108
    Date: 1996
    Page Range: 257--265
    Publication Info: [London s.n