. Bulletin. Natural history; Natural history. 440 Illinois Natural History Survkv Bulletin Vol. 29, Art. 4 dark brown. Yellow: antennal seg- ments III-VI (segment VII yellowish brown), apical half of fore tibiae, all tarsi, major setae of prothorax, and lateral setae of abdomen. Body with red subintegumental pigment. Wings colorless except for a light brown cloud in region of scale of fore wing. Head (Fig. 229) longer than wide, anterior area not particularly pro- longed, very weakly transversely stri- ate. Eyes moderate in size, not pro- longed ventrally more than dorsally. Ocelli present. Po
. Bulletin. Natural history; Natural history. 440 Illinois Natural History Survkv Bulletin Vol. 29, Art. 4 dark brown. Yellow: antennal seg- ments III-VI (segment VII yellowish brown), apical half of fore tibiae, all tarsi, major setae of prothorax, and lateral setae of abdomen. Body with red subintegumental pigment. Wings colorless except for a light brown cloud in region of scale of fore wing. Head (Fig. 229) longer than wide, anterior area not particularly pro- longed, very weakly transversely stri- ate. Eyes moderate in size, not pro- longed ventrally more than dorsally. Ocelli present. Postocular setae small, pointed. Antennal segment III ap- parently without sense cones; segment IV with two outer and two inner sense cones; segment VII with a broad pedi- cel; segment VIII nonpedicellate, broadly joined to segment VII. Mouth cone relatively short, broadly rounded. Maxillary stylets placed far apart within head, forming a V; maxillary bridge broad. Prothorax with anteromarginal and midlateral setae small to minute; ma- jor posterior setae moderate in size; all pointed. Praepectus present. Meta- notum weakly sculptured so as to ap- pear nearly smooth. Fore tarsi each armed with a short tooth. Fore wings slightly constricted in the middle; se- tae on basal vein spur subequal in size, small, pointed; each with about five accessory fringe cilia. Pelta triangular with elongate hex- agonal reticulations. Abdominal ter- gite IX with major posterior setae moderate in size, pointed. Abdominal segment IX with internal rod (fustis) short. Tube short. Male (macropterous).—Length distended about mm. Similar in color and structure to female with the following exceptions. Abdominal ter- gite IX with major lateral posterior setae reduced in size. Abdominal ster- nite VIII apparently without any defii nite glandular area. This species can be easily distin- guished from its congeners in the Illi- nois fauna because it lacks sense cones on antennal segment III and has all tar
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Keywords: ., booka, bookcentury1900, bookdecade1910, booksubjectnaturalhistory
