. Bulletin. Natural history; Natural history. 62 Illinois Naiural History Sl'r\e^ Bulletin Vol. 33, Art. 1 Tabanus pruinosus Hine (1900:248). Name preoccupied (Bigot 1892). Type-locality: Ohio. Small size (9 mm); grayish black; abdomen often grayish laterally on first 2 tergites; wings hyaline, costal cell sometimes faintly tinged with yellow; eyes hairy. Male eye facets differen- tiated; abdomen laterally often more extensively pale than in female; eyes hairy. Although of minor importance, A. ohioensis attacks man and animals. It attacks man around the head, much as do several species of Chry


. Bulletin. Natural history; Natural history. 62 Illinois Naiural History Sl'r\e^ Bulletin Vol. 33, Art. 1 Tabanus pruinosus Hine (1900:248). Name preoccupied (Bigot 1892). Type-locality: Ohio. Small size (9 mm); grayish black; abdomen often grayish laterally on first 2 tergites; wings hyaline, costal cell sometimes faintly tinged with yellow; eyes hairy. Male eye facets differen- tiated; abdomen laterally often more extensively pale than in female; eyes hairy. Although of minor importance, A. ohioensis attacks man and animals. It attacks man around the head, much as do several species of Chrysops. Larvae (Fig. 216) have been collect- ed in saturated pasture sod, seepage areas, and moss along streams (Pechu- man 1972; Teskey 1969). In Illinois adults appear in late June and have been collected until early July A. ohioensis is a northern species, extending from Pennsylvania to Alberta (Fig. 156). This species has been col- lected at only two localities in north- central Illinois. Illinois Records.—Bureau County, Princeton; Woodford County, Spring large numbers in sphagnum bogs, and males are as commonly collected as females. The flight is weak, and when disturbed, this species rarely flies more than a few yards. There are no rec- ords oi A. thoracicus biting. Larvae (Fig. 215) have been found in open areas of a sphagnum bog mat (Teskey 1969). In Illinois adults appear in mid-July and have been collected until late July. A. thoracicus is a northern species, extending from Delaware to Nova Sco- tia and west to Wisconsin (Fig. 157). In Illinois this species has been collect- ed at a single locality. Illinois Records.—Iroquois County, Iroquois County Conservation Area (3 miles NE Beaverville).. 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,


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