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    The Systematic Position of Helminthoglypta traskii fieldi Pilsbry, 1930 (Gastropoda: Stylommatophora)

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    Subject
    Helminthoglypta; Gastropoda; Stylommatophora; snail; distribution
    Author
    Roth, Barry
    Journal Title
    Scas: Bulletin of the Southern California Academy of Sciences
    Volume
    72
    Issue
    scas/vol72/iss3; 3
    Metadata
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    URI
    https://scholar.oxy.edu/handle/20.500.12711/10873
    Abstract
    Dissection of the genitalia of the snail described as Helminthoglypta traskii fieldi shows that it belongs to the so-called Helminthoglypta ayresiana series, a small group of species of coastal, south-central California and the northern Channel Islands. Comparison with other members of the group suggests recognition of it as a distinct species, H. fieldi. Pleistocene and post-glacial climatic conditions appear to have influenced distribution of the group.
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