. Bulletin. Natural history; Natural history. groups of 5 or 6 or threadlike, usu- ally crushed into a small, shapeless bundle Hesperophylax, p. 183; probably Caborius also, p. 196 Dorsal abdominal gills finger-like and distinct, figs. 622, 623, never with more than 3 or 4 gills in a group. . 3 3. Dorsal abdominal gills stout, very long, and arising singly 4 Dorsal abdominal gills more slender, arising in bunches of two or more. 5 4. Dorsal plates 5P, 6 and 7 with about 17, 5 and 4 teeth, respectively, fig. 619 Astenophylax, p. 183 Dorsal plates 5P, 6 and 7 with about 7 and 2 teeth and 1 tooth
. Bulletin. Natural history; Natural history. groups of 5 or 6 or threadlike, usu- ally crushed into a small, shapeless bundle Hesperophylax, p. 183; probably Caborius also, p. 196 Dorsal abdominal gills finger-like and distinct, figs. 622, 623, never with more than 3 or 4 gills in a group. . 3 3. Dorsal abdominal gills stout, very long, and arising singly 4 Dorsal abdominal gills more slender, arising in bunches of two or more. 5 4. Dorsal plates 5P, 6 and 7 with about 17, 5 and 4 teeth, respectively, fig. 619 Astenophylax, p. 183 Dorsal plates 5P, 6 and 7 with about 7 and 2 teeth and 1 tooth, respec- tively, fig. 621. . Pycnopsyche, p. 193 5. Second antennal segment with a tuft of long, black hair, fig. 624 Dicosmoecus, p. 181 Second antennal segment with at most a tuft of very short setae, fig. 625. 6 6. Postero-dorsal gills of second abdomi- nal segment and antero-dorsal gills of third segment with some filaments reaching fifth segment and a few others nearly as long, fig. 622 Platycentropus, p. 181 Postero-dorsal gills of second abdomi- nal segment and antero-dorsal gills of third never reaching more than a short distance on fourth segment, fig. 623 Limnephilus, p. 185; Glyphopsyche, p. 200; Frenesia, p. 199. 620 Fig. 618.—Neophylax autumnus pupa, hook- Fig. 622.—Platycentropus radiatus pupa, bearing plates. portion of abdomen. Fig. bl9.~Jstenophylax argus pupa, hook- Fig. 623.—Glyphopsyche missouri pupa, bearing plates. portion of abdomen. Fig. 620.—Limnephilus submonilifer pupa, Fig. 624.—Dicosmoecus sp. pupa, base of hook-bearing plates. antenna. Fig. b2\.~Pycnopsyche subfasciata pupa. Fig. 625.—Platycentropus radiatus pupa, hook-bearing plates. base of 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 Illinoi
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