. Bulletin. Natural history; Natural history. Fig. 141.—AgapetHs artesus. Agapetus illini Ross Agapetus illini Ross (1938rt, p. 106); cf, 9. Larva.—-Similar in size and color to that of Glossosoma. Adults.—Length 7-8 mm. Body and ap- pendages dark brown. Male genitalia, fig. 144, with apex of tenth tergite irregularly and sharply serrate, claspers tapering to apex. Female genitalia as in fig. 145. Restricted in Illinois to clear streams in the Ozarkian region, where it becomes very abundant in early spring in these temporary streams. It has one generation per year. Known also from Arkansas, Ke
. Bulletin. Natural history; Natural history. Fig. 141.—AgapetHs artesus. Agapetus illini Ross Agapetus illini Ross (1938rt, p. 106); cf, 9. Larva.—-Similar in size and color to that of Glossosoma. Adults.—Length 7-8 mm. Body and ap- pendages dark brown. Male genitalia, fig. 144, with apex of tenth tergite irregularly and sharply serrate, claspers tapering to apex. Female genitalia as in fig. 145. Restricted in Illinois to clear streams in the Ozarkian region, where it becomes very abundant in early spring in these temporary streams. It has one generation per year. Known also from Arkansas, Kentucky, Missouri and Oklahoma; apparently con- fined to the Ozarkian uplift and adjacent hilly regions. Illinois Records.—East of Aldridge: May 14, 1940, Mohr & Burks, 3 pupae, many larvae. Alto Pass, Union Spring:. cf Genitalia Fig. 143.—Agapetus medicus. artesus, fig. 141, known from Missouri, has a somewhat pear-shaped, pointed tenth tergite and medium length, rounded clasp- ers; crasmus, fig. 142, known from Tennes- see, has a long tenth tergite with a hook at apex and very short, truncate claspers; and medicus, fig. 143, known from Arkansas, has a cleaver-shaped tenth tergite and long, rectangular claspers. Satisfactory charac- ters have not yet been found to identify the females of species in this group. Fig. 144.—Agapetus 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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