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Abstract

The genera Chrysococcus, Kephyrion, Pseudokephyrion and Stonokalyx have received some consideration by investigators in Europe and in the boreal forest and tundra-range regions of the United States. Many of the species are considered to be cold-water stenotherms, thus occurring more frequently in northern habitats. In the present paper 4 species of Chrysococcus, 4 species of Kephyroin, 2 species of Pseudokephyrion and 2 species of Stenokalyx from Arkansas are discussed.

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