. Bulletin. Natural history; Natural history. August, 1944 Ross: Caddis Flies of Illinois 53 with a large, thick brush on the mesal side, fig. 196 Phylocentropus, p. 54 Mandibles longer, fig. 197, with only a thin brush on left mandible, none on right 3 3. Right mandible with a single dorsal tooth which only partially hides the ventral row of teeth; on the left mandible the dorsal row of teeth does not hide the ventral row, figs. 197, 198 4 Right mandible with two large dorsal teeth which completely overhang and hide the ventral row; on the left mandible the dorsal row of teeth overhangs and h
. Bulletin. Natural history; Natural history. August, 1944 Ross: Caddis Flies of Illinois 53 with a large, thick brush on the mesal side, fig. 196 Phylocentropus, p. 54 Mandibles longer, fig. 197, with only a thin brush on left mandible, none on right 3 3. Right mandible with a single dorsal tooth which only partially hides the ventral row of teeth; on the left mandible the dorsal row of teeth does not hide the ventral row, figs. 197, 198 4 Right mandible with two large dorsal teeth which completely overhang and hide the ventral row; on the left mandible the dorsal row of teeth overhangs and hides the ventral row, fig. 199 5 4. Basal segment of anal appendages (tenth segment) without hair, fig. 192; left mandible with basal tooth small and with a linear brush on mesal face near base, fig. 197 Neureclipsis, p. 56 Basal segment of anal appendages (tenth segment) with long hair, fig. 193; left mandible with basal tooth large, subequal to one above and with brush small, fig. 198 Polycentropus, p. 58 5. Ninth sternite with a wide, T-shaped, reticulate area; tenth segment short, with an extensive patch of minute spinules on venter, figs. 200, 201. . Psychomyiid Genus B, p. 74 Ninth sternite without a reticulate area; tenth segment long, without spinules but with an extensive patch of long hair on venter, similar to fig. 193 Psychomyiid Genus A, p. 73 Pupae 1. Apex of mandibles with a long, termi- nal "whip," fig. 202 Psychomyia, p. 75. Fig. 202.—Psychomyia flavida pupa, man- dible. Fig. 203.—Polycentropus cinereus pupa, mandible. Fig. 204.—Phylocentropus placidus pupa, mandible. (After Vorhies.) Apex of mandibles without a terminal "whip," fig. 203 2 2. Terminal segment of abdomen with 4 bushy processes, 2 apical and 2 baso- lateral Phylocentropus, p. 54 Terminal segment with only 2 apical bushy processes, fig. 205 3. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - color
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Keywords: ., booka, bookcentury1900, bookdecade1910, booksubjectnaturalhistory
