. The classification, evolution, and dispersal of the winter stonefly genus Allocapnia. Insects; Allocapnia. 155. Fig. 104. Distribution of Allocapnia pygmaea. Arrows indicate probable routes of post-Pleistocene Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Ross, Herbert Holdsworth, 1908-; Ricker, William Edwin. Urbana, University of Illinois Press

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Keywords: ., bookcentury1900, bookcollectionbiodiversity, booksubjectinsects