. Bulletin. Natural history; Natural history. Fig. 146.—Distribution of Chrysops striatus in Illinois and North America. Chrysops univittatus Macquart Chiysops univittatus Macquart (1855:56). Type-locality: Maryland, Baltimore. Chrysops wiedetnanni Krober (1926:267). Type-locality: (syntypes from sever- al localities in Canada and the Unit- ed States). Chrysops fraternus Krober (1926:328). Type-locality: unknown. Rather small size (7 mm); black or dark brown; frontoclypeus shining yellow, often blackish laterally, abdo- men with median yellowish stripe, some- times similar shorter sublateral s
. Bulletin. Natural history; Natural history. Fig. 146.—Distribution of Chrysops striatus in Illinois and North America. Chrysops univittatus Macquart Chiysops univittatus Macquart (1855:56). Type-locality: Maryland, Baltimore. Chrysops wiedetnanni Krober (1926:267). Type-locality: (syntypes from sever- al localities in Canada and the Unit- ed States). Chrysops fraternus Krober (1926:328). Type-locality: unknown. Rather small size (7 mm); black or dark brown; frontoclypeus shining yellow, often blackish laterally, abdo- men with median yellowish stripe, some- times similar shorter sublateral stripes; apical spot broad and nearly separated from crossband (Fig. 70); hyaline tri- angle almost reaches anterior margin of wing; crossband broad, covering most of discal cell, narrowed posteriorly but reaches hind margin of wing; both basal cells and fifth posterior cell hya- line. Male with first basal cell infus- cated. Pechuman (1957) called this species C. wiedetnanni Krober. Since that time it has been shown (Philip 1961) that the correct name is univittatus. and the species called uniinttatus by various work- ers before 1961 is now known as C. macquarti Philip. The name C. obsoletus has also been applied to univittatus, but this name properly belongs to a quite unrelated species. The body coloration of C. univittatus is extremely variable. The abdominal pattern varies from three distinct yel- low stripes to only a trace of a median stripe. Larvae (Fig. 97) have been found in wet soil and plant debris along both sluggish and swift streams, in mud on the shores of ponds and lakes, and in marshes (Pechuman 1972; Teskev 1969). In Illinois adults appear in early. Rg. 147.—Distribution of Chrysops univittatus in Illinois and Nortfi 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. Na
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