. Bulletin. Natural history; Natural history. 42 Illinois Natural History Survey Bulletin Vol. 33. Art. 1. Rg. 122.—Distribution of Chrysops cincticornis in Illinois and North America. been collected around the margins of lakes and bogs in Lake and McHenry counties. C. cincticornis is a central and east- ern species, extending from Georgia to Nova Scotia and west to Minnesota and eastern Texas (Fig. 122). Two dis- junct records are known from North Dakota. In Illinois (Fig. 122) this spe- cies has been collected only in the northern half of the state. Chrysops cuclux Whitney Chrysops cuclux Wh
. Bulletin. Natural history; Natural history. 42 Illinois Natural History Survey Bulletin Vol. 33. Art. 1. Rg. 122.—Distribution of Chrysops cincticornis in Illinois and North America. been collected around the margins of lakes and bogs in Lake and McHenry counties. C. cincticornis is a central and east- ern species, extending from Georgia to Nova Scotia and west to Minnesota and eastern Texas (Fig. 122). Two dis- junct records are known from North Dakota. In Illinois (Fig. 122) this spe- cies has been collected only in the northern half of the state. Chrysops cuclux Whitney Chrysops cuclux Whitney (1879:35). Type- locality: New Hampshire, Milford. Moderate size (8 mm); black; fron- toclypeus with median pollinose stripe; pleura with gray pile; abdomen with pale grayish yellow area laterally near base, no median abdominal triangles; no apical spot or hyaline triangle (Fig. 48); crossband broad, pale, covering discal cell, generally reaching hind mar- gin of wing although very pale in this area; basal half of both basal cells infuscate, pale. In male, pale area of abdomen smaller than in female. This species is similar to C. excitam although the wing picture is distinctly paler and abdomen has no middorsal pale markings. The larvae (Fig. 86) are known from wet mud along streams and occasional- ly from pond margins (Pechuman 1972; Teskey 1969). C. cuclux is a northeastern species, extending from Georgia to Nova Sco- tia and west to Wisconsin (Fig. 123). A disjunct population has been exam- ined from northwestern Ontario. As yet this species has not been collected in Illinois although specimens ha\e been examined from southeastern Wiscon- sin and northwestern 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 Reg
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