. Bulletin. Natural history; Natural history. 162 Illinois Natural History Survey Bulletin Vol. 23, Art. 1 fig. 561, and without a diagonal black line Phryganea, p. 174 Pronotum with a diagonal black line, fig. 562, anterior margin mostly yellow Banksiola selina, p. 169; Agrypnia straminea, p. 165 Mesonotum with a pair of small scle- rites near anterior margin, fig. 563 4 Mesonotum without a pair of scle- rites, sometimes with a very small sclerotized area around the base of 1 seta, fig. 564 5 Mature larvae attaining length of 30 mm Eubasilissa, p. 168 Mature larvae attaining length of only 20
. Bulletin. Natural history; Natural history. 162 Illinois Natural History Survey Bulletin Vol. 23, Art. 1 fig. 561, and without a diagonal black line Phryganea, p. 174 Pronotum with a diagonal black line, fig. 562, anterior margin mostly yellow Banksiola selina, p. 169; Agrypnia straminea, p. 165 Mesonotum with a pair of small scle- rites near anterior margin, fig. 563 4 Mesonotum without a pair of scle- rites, sometimes with a very small sclerotized area around the base of 1 seta, fig. 564 5 Mature larvae attaining length of 30 mm Eubasilissa, p. 168 Mature larvae attaining length of only 20 mm Oligostomis, p. 167 5. Pronotum with anterior margin black, fig. 564, and without a diagonal black line Agrypnia vestita, p. 166 Pronotum with a diagonal black line, fig. 565, anterior margin mostly yellow 6 6. Diagonal marks on pronotum meeting at posterior margin to form a V- mark, fig. 566 Phryganeid Genus A, p. 167 Diagonal marks on pronotum not reaching posterior margin but join-. 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
