. Bulletin. Natural history; Natural history. Fig. 250.—Distribution of Tabanus sublongus In Illinois and North America. Tabanus subniger Coquillett Tabanus subniger Coquillett (1906:48). Type-locality: Illinois, Lake Forest. Tabanus nigricans ]o\\\nien (1935:15), not Wiedemann (1828:157). Mis- identification. Large species (23 mm); frons broad, gray, narrowed above, notched at vertex; palpi dark brown to black; subcallus not denuded; eye bare; thorax with grayish white pile; wings pale yellow- ish with dark spots, costal cell yellow; abdomen black. Male eye facets dis- tinctly differentiat
. Bulletin. Natural history; Natural history. Fig. 250.—Distribution of Tabanus sublongus In Illinois and North America. Tabanus subniger Coquillett Tabanus subniger Coquillett (1906:48). Type-locality: Illinois, Lake Forest. Tabanus nigricans ]o\\\nien (1935:15), not Wiedemann (1828:157). Mis- identification. Large species (23 mm); frons broad, gray, narrowed above, notched at vertex; palpi dark brown to black; subcallus not denuded; eye bare; thorax with grayish white pile; wings pale yellow- ish with dark spots, costal cell yellow; abdomen black. Male eye facets dis- tinctly differentiated; pile of thorax dark brown; third antennal segment dark brown or black; eyes bare. This large species superficially re- sembles T. stygius, but is easily distin- guished by the characters given in the key. A single larva of this species was taken from a pond at Ithaca, New York. The larva and pupa of this speci- men are keyed by Johannsen (1935) to Tabanus nigricans. In Illinois adults have only been col- lected from late June to early July. In spite of its large size and conspic- uous appearance, T subniger is a rarely collected northeastern species, extend- ing from New Jersey to New York and west to Illinois (Fig. 251). This species has been collected twice in northeast- ern Illinois. Illinois Records.—Cook County, Stickney; Lake County, Lake Fig. 251 .—Distribution of Tabanus subniger in North America. Tabanus subsimilis Bellardi Tabanus substmilLs Bellardi (1859:66). Type-locality: Mexico. Tabanus inttigerschwardti Philip (1942:29). Type-locality: Tennessee, 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 Illinois, Dept. of Registration and Education, Natural History Survey Division
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