. Bulletin. Natural history; Natural history. 80 Illinois Natural History Survey Bulletin Vol. 22, Art. I from Anna, Antioch, Beach, Browns, Bu- reau, Champaign, Dolson, Golconda, Grand Detour, Herod, Makanda, Marshall, Mount Illinois Records.—Thirty-five males and 44 females, taken May 12 to July 15, are from Algonquin, Antioch, Browns, Charles-. Fig. 114.— Male genital claspers of Strongylocoris. A, left clasper; B, right clasper. Carmel, Oakwood, Oregon, Pulaski, Shaw- neetown, Urbana, West Union. Strongylocoris atritibialis Knight Strongylocoris atritibialis Knight (1938, p. 2). This speci
. Bulletin. Natural history; Natural history. 80 Illinois Natural History Survey Bulletin Vol. 22, Art. I from Anna, Antioch, Beach, Browns, Bu- reau, Champaign, Dolson, Golconda, Grand Detour, Herod, Makanda, Marshall, Mount Illinois Records.—Thirty-five males and 44 females, taken May 12 to July 15, are from Algonquin, Antioch, Browns, Charles-. Fig. 114.— Male genital claspers of Strongylocoris. A, left clasper; B, right clasper. Carmel, Oakwood, Oregon, Pulaski, Shaw- neetown, Urbana, West Union. Strongylocoris atritibialis Knight Strongylocoris atritibialis Knight (1938, p. 2). This species is distinguished from stygicus (Say) by its more arcuate hemelytra, black tibiae and the structure of the male genital claspers, fig. 114. Male.—Length , width Head width , vertex Antennae black: length of first segment, ; second, ; third, ; fourth, Pronotum, length , width at base Hemelytra with costal margin strongly arcuate. Dorsal sur- face nearly glabrous, rugulose, punctate, sparsely clothed with fine, short pubescence, which is more evident on cuneus and embo- lium. General coloration deep black; mem- brane very dark brown; legs black; tibiae and tarsi sometimes very dark brown, but hind tibiae always black. Genital claspers distinctive for species, fig. 114. Female.—Length , width ; em- boliar margins more strongly arcuate than in male. Form more robust than in male, but very similar in coloration. Known Distribution.—^Widely distrib- uted in eastern United States and ranging westward into Alberta, Colorado, Wyoming. ton, Dolson, Dongola, Fountain Bluff, Galena, Galesburg, Grand Detour, Grays- lake, Havana, Herod, Joliet, Makanda, Muncie, Pulaski, St. Anne, Shawneetown, Sheldon, Volo. Strongylocoris hirtus Knight Strongylocoris hirtus Knight (1938, p. 4). This is distinguished from allied species with erect pubescence by the longer second antennal segment, which exceeds the width of the head across the
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