no. 3608 CADDIS FLIES, IV — FLINT 15 



at about 135° to axis of stem, tip enlarged, divided into lateral plates. 



Holotype, male: Mexico (Michoacan), Tuxpan, July 7-8, 1965, 

 Flint and Ortiz. 



Paratypes: Same data, 3 cf . Mexico (Durango), 11 miles west of 

 El Salto, June 29-30, 1964, Spangler, 1 d". Mexico (Michoacan), 

 Turundeo, route 15, km 200, July 14, 1966, Flint and Ortiz, 3 cf , 1 9. 

 Mexico (Michoacan), San Lorenzo, route 15, km 206, July 14-15, 

 1966, Flint and Ortiz, 4 cf ; same except July 19, 1966, 1 cf, 1 9. 



Plectropsyche sandrae, new species 



Figures 61-63 



This is the second species described in the genus Plectropsyche. 

 From the type-species, P. hoogstraali Ross, it differs in coloration, 

 shape of the tenth tergum, and forked apex of the clasper. 



Adult. Length of forewing 7 mm. Color brown, legs paler, wings 

 with many flecks of golden hair. Male genitalia: Ninth segment 

 without a stout hooked process from posterior margin. Tenth tergum 

 with two lateral lobes, basal one flat and flared laterad, and dorsal 

 one terete and upright, apical portion slightly expanded apicoventrally. 

 Clasper with basal segment angulate near midlength, apical segment 

 with a short, dorsal, subapical process. Aedeagus with base inflated, 

 apex with a pair of lateral lobes and a central knob. 



Holotype, male: Costa Rica, Golfito, Apr. 25-28, 1965, Duckworth. 



I take pleasure in dedicating this species to Sandra Duckworth, 

 who collected this and many other Trichoptera on joint trips with 

 her husband. 



Leptonema chila, new species 



Figures 64-67 



This is closely related to L. salvini Mosely but differs in the pointed 

 ventral extension of the tenth tergite and the mesodorsal process 

 and lateral spiculate band of the aedeagus. 



Adult. Length of forewing 15 mm. Color pale brown. Male 

 genitalia: Tenth tergite with two long dorsal and one dorsomesal 

 processes; laterally a flattened area, expanded ventrally and developed 

 into a sharp tooth. Clasper long, slender, without basomesal proc- 

 esses, apical segment curving mesally and with a pad of black spicules. 

 Aedeagus apically with a pair of basally directed processes along 

 dorsum, tip developed into a pair of short, lateral, winglike lobes, 

 an erect dorsomesal process, laterally with a band of spicules that 

 appears to demark the margin of a flat structure fused to the central 

 tube. 



