Abstract
Within the scope of a world revision of the genus group Cephalops Fallén, the pipunculid fauna of the Hawaiian islands was revised. All 36 species proved to belong to a distinct monophyletic species group within the genus Cephalops, called the hawaiiensis subgroup. This subgroup seems to be endemic to the islands and probably originated from one founder ancestor. A cladistic analysis, based on characters of the male terminalia, resulted in a largely resolved cladogram where a number of distinct transformation series could be detected. A zoogeographical analysis, based on assumption 0 (Brooks parsimony analysis), 1 and 2 (Component analysis) agrees with the geological information, and the ancestry and colonization of the group throughout the history is discussed.
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