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, from Long Island, New York. 



T- 



V-w. 





B 



•1 



Fig. 711. — Beraea nigritta, female genitalia. 

 A, B and C, respectively lateral, ventral and 

 dorsal aspects; D, bursa copulatrix. 



The original collection consisted of females, 

 and no other specimens have been found 

 from that vicinity. The female genitalia, 

 fig. 711, resemble those of the Molannidae 

 and Odontoceridae in general structure. 

 Recently a male of this genus was received 

 from Georgia, and, since it cannot be asso- 

 ciated definitely with nigritta, it is described 

 as new. 



Beraea gorteba new species 



Male. — Length 5 mm. Head and thorax 

 brown; appendages yellowish or paler, cov- 

 ered with brown hair, the legs with black 

 spines; wings hyaline with brown hair. Gen- 

 eral structure typical for family; maxillary 

 palpi cylindrical and very hairy, five seg- 

 mented, the first half as long as the second, 

 the remainder subequal ; tibial spur formula 



Fig. 712. — Beraea gorteba, front wing. 



