. Bulletin. Natural history; Natural history. Fall and Wixtef: Stoxeflies 387 area; first eight segments at least twice as broad as long and with lateral mar- gins rounded, ninth segment longer than eighth, tenth segment with posterior margin somewhat T-shaped; supra-anal lobe (Figure 43) prominent and pro-. Figs. 44-47. Adults of Allocapnia: 44 and 45, dorsal and ventral views of female of A. granulata (Claassen), showing long wings and venation, chitinized areas and V-shaped posterior margin of meso- sternum; 46, dorsal view of four females of A. vivipara (Claassen), showing variation in len
. Bulletin. Natural history; Natural history. Fall and Wixtef: Stoxeflies 387 area; first eight segments at least twice as broad as long and with lateral mar- gins rounded, ninth segment longer than eighth, tenth segment with posterior margin somewhat T-shaped; supra-anal lobe (Figure 43) prominent and pro-. Figs. 44-47. Adults of Allocapnia: 44 and 45, dorsal and ventral views of female of A. granulata (Claassen), showing long wings and venation, chitinized areas and V-shaped posterior margin of meso- sternum; 46, dorsal view of four females of A. vivipara (Claassen), showing variation in length of wings and the dark chitinization of apical segments; 47, dorsal view of male of A. forhesi Frison, show- ing short wings, longitudinal light stripe on abdomen, and dark chitinization of three apical 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
