. Bulletin. Natural history; Natural history. biloba, however, in that the lateral ab- dominal projections are much more devel- oped except on the first and eighth seg- ments, that there is a very prominent pro- jection on each side of the mesonotal wing pad, and that the projections at the corner angles of the pronotum are abnormally prominent. There is considerable question as yet regarding the true status of Pteronarcys comstocki Smith, and it is possible that the nymph now illustrated should be asso- ciated with this name. Reared material is needed to settle this and other points in- volve
. Bulletin. Natural history; Natural history. biloba, however, in that the lateral ab- dominal projections are much more devel- oped except on the first and eighth seg- ments, that there is a very prominent pro- jection on each side of the mesonotal wing pad, and that the projections at the corner angles of the pronotum are abnormally prominent. There is considerable question as yet regarding the true status of Pteronarcys comstocki Smith, and it is possible that the nymph now illustrated should be asso- ciated with this name. Reared material is needed to settle this and other points in- volved with the correct determination of several species of Pteronarcys. Data associated with these specimens are as follows. Connecticut.—Mount Carmel, Mill River, Sleeping Giant State Park: Oct. 14, 1941, K. M. Sommerman, 1 nymph. New Brunswick.—Penobsquis, crawling on rocks in small clear stream: Aug. 20, 1939, T. H. Frison & T. H. Frison, Jr., 18 nymphs. PELTOPERLIDAE This family is exceedingly interesting to the student of stoneflies because of its many unique features, including the strik- ingly roachlike appearance of the Fig. 2.—Nymph of Pteronarcys species. Fig. 3.—Nymph of Peltoperla 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
