. The classification, evolution, and dispersal of the winter stonefly genus Allocapnia. Insects; Allocapnia. 146. Fig. 95. Postulated stages in the evolution and dispersal of the four popula- tions of Allocapnia granulata (see Fig. 94). For explanation, see text (pp. 29-30,64-65).. 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