. Bulletin. Natural history; Natural history. 208 Illinois Natural History Survey Bulletin Vol. 23, Art. 1 Molanna blenda Sibley Molanna blenda Sibley (1926^, p. 105); larva. Molanna blenda Betten (1934, p. 245); cT, 9. Larva.—Very similar to that of uniophila. Sibley's illustrations indicate that the pro- notum is darker, but since there is some variation of this character in uniophila, it is doubtful whether this is a safe criterion for identification. Adults.—Length 10-11 mm. Similar in general appearance to those of uniophila. Front wings of male with a wide furrow running through the leng
. Bulletin. Natural history; Natural history. 208 Illinois Natural History Survey Bulletin Vol. 23, Art. 1 Molanna blenda Sibley Molanna blenda Sibley (1926^, p. 105); larva. Molanna blenda Betten (1934, p. 245); cT, 9. Larva.—Very similar to that of uniophila. Sibley's illustrations indicate that the pro- notum is darker, but since there is some variation of this character in uniophila, it is doubtful whether this is a safe criterion for identification. Adults.—Length 10-11 mm. Similar in general appearance to those of uniophila. Front wings of male with a wide furrow running through the length of the wing, the furrow filled with scales. Male genitalia, fig. 707, similar in general structure to those of uniophila but with the tenth ter- gite shaped more like a duck's head and bill, the apico-ventral projection long and almost truncate. We have only one Illinois record for this species, a male collected along one of the spring-fed brooks in the Botanical Gardens at Elgin, June 13, 1939, Frison & Ross. Aside from Illinois, records are available only for New York and Wisconsin. Molanna flavicornis Banks Molanna flavicornis Banks (1914, p. 261); cf, 9. This species has not yet been taken in Illinois but has been recorded only a few miles away at Madison, Wisconsin. This species is common through the northern part of the continent with a distinct prefer- ence for lakes. Records are available for Colorado, Manitoba, Michigan, Minnesota, New York, Quebec, Saskatchewan, South Dakota and Wisconsin. BERAEIDAE Contains only the genus Beraea. No lar- vae of this family have been recognized from North America, the key characters used here being taken from Ulmer (1909). Beraea Stephens Thya Curtis (1834, p. 216); preoccupied. Beraea Stephens (1836, p. 158). Genotype, by present designation: Beraea marshamella Stephens = pullata (Curtis). Only two species of the genus have been found in North America, and neither of these in Illinois. Banks described the first, tiigritta,
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