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Document Type

Peer-Review Article

Abstract

[Excerpt]

The dunes along the shores of Lake Huron in the vicinity of Ipperwash Provincial Park, Port Franks, and Pinery Provincial Park, Ontario, are notable for their unusual vegetation and a number of interesting plants and animals. During studies of the peculiar, disjunctive populations of the dwarf hackberry tree (Celtis tenuifolia Nutt.) (Wagner, 1974), I became aware that the local population of marbled white, Euchloe olympia (Edwards), differed in a number of respects from the usual form with which I was familiar. Preliminary observations during the spring of 1975 suggested that the butterflies might even represent a distinct subspecies, so numerous were the differences. Later observations on collections made by Mogens C. Nielsen in the sand dunes of Berrien County, Michigan, along Lake Michigan, show similar differences from the usual form of olyrnpia in the Great Lakes region.

Included in

Entomology Commons

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