260 



Illinois Natural History Survey Bulletin 



Vol. 23, Art. 1 



genitalia as in fig. 884, with no prominent so that locally this species may have a highly 



processes; bursa copulatrix as in fig. 8845. irregular emergence period, as was found 



This species has been taken in consider- true in certain localities for Neophylax (see 



able numbers in three spring-fed brooks in p. 202). 



the state, one at Elgin (see p. 7), another 



Fig. 883. — Lepidostoma liba, male genitalia. 

 A, lateral aspect; 5, dorsal aspect; C, clasper. 



Fig, 884. — Lepidostoma liba^ female geni- 

 talia. A, ventral aspect; 5, bursa copulatrix. 



at Cave Spring, Quincy, and the other at 

 a spring near McCann School at La Rue. 

 These are very widely scattered. In all 

 three places we have taken the larvae in 

 fairly good numbers, and at Quincy we col- 

 lected mature pupae, linking the larval and 

 adult forms. Our adults were taken in May, 

 June and September, indicating a possible 

 two-brooded cycle. Our observations at 

 Quincy, however, where a large flight of 

 adults was taken on September 15, indicates 

 that the spring brood may have been skipped, 



This species has not been collected outside 

 of Illinois, so that nothing can be stated 

 regarding its general range. 



Illinois Records. — Elgin, stream in Bo- 

 tanical Gardens: June 6, 1939, Burks & 

 Riegel, 15, 25; June 13, 1939, Prison 

 & Ross, 1$. La Rue, McCann Spring: 

 May 12, 1939, Burks & Riegel, 1 2 . 

 Quincy, Cave Spring: Sept. 15, 1939, Ross 

 & Riegel, 3 5, 52. 



Theliopsyche Banks 



Theliopsyche Banks (1911, p. 356). Geno- 

 type, monobasic: Theliopsyche parva Banks. 



Subg. Aopsyche Ross (1938fl, p. 174). Geno- 

 type, by original designation: Theliopsyche 

 corona Ross. 



No species of this genus has as yet been 

 found in Illinois. It is represented by four 

 species, all restricted to the eastern states. 



Fig. 885. — Theliopsyche parva, male geni- 

 talia. A, ventral aspect; B, aedeagus; C, 

 eighth sternite. 



The males are readily distinguished by the 

 wide, flaplike process on the eighth sternite, 

 fig. 885C. No larvae of this genus have been 

 reared. 



BRAGHYGENTRIDAE 



The maxillary palpi are three segmented 

 in the male, five segmented in the female. 

 The tibial spur count varies a great deal. 

 The larvae are readily distinguished by 

 having a sharp crease across the pronotum, 

 a divided mesonotum and only two pairs of 

 sclerites on the mesonotum; in addition, the 



