. Bulletin. Natural history; Natural history. September, 1942 Prison: North American Plecoptera 255 holotype was collected. The exuviae rep- resent both males and females, are very dark, lack a longitudinal pale stripe on ab- dominal tergites, lack coxal gills and, from shape of apical abdominal segments, un- doubtedly should be associated with rossi. The peculiar, pointed projections on the tenth abdominal tergite, combined with the lobe on the ninth abdominal sternite, readily separate the adult of this new spe- cies from adults of all previously described species. Brachyptera limata new spe


. Bulletin. Natural history; Natural history. September, 1942 Prison: North American Plecoptera 255 holotype was collected. The exuviae rep- resent both males and females, are very dark, lack a longitudinal pale stripe on ab- dominal tergites, lack coxal gills and, from shape of apical abdominal segments, un- doubtedly should be associated with rossi. The peculiar, pointed projections on the tenth abdominal tergite, combined with the lobe on the ninth abdominal sternite, readily separate the adult of this new spe- cies from adults of all previously described species. Brachyptera limata new species Male.—General habitus similar to that of other species of Brachyptera. Head, thorax and abdomen mostly yellowish. 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 Illinois. Natural History Survey Division. Urbana, State of Illinois, Dept. of Registration and Education, Natural History Survey Division


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Keywords: ., booka, bookcentury1900, bookdecade1910, booksubjectnaturalhistory