184 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 90 



The species appears to be closest to leptotaenkie in coloration but 

 nearest angustati on characters of the genitalia. In coloration it is 

 inseparable from leptotaemae but may easily be separated from 

 angustati by the presence of the pink cast of the costa which angustati 

 lacks. D. lohitinani can be separated from leptotaeniae by its long 

 slender aedeagus ; from angustati by the more evenly curved aedeagus, 

 the more strongly excurved spine cluster from the base of the sacculus, 

 the series of four or five short bristles as the base of the clasper, and 

 the deeply incised posterior margin of the anellus. The females are 

 at once distinguishable by their genitalia. D. leptotaeniae lacks the 

 curved, sclerotized posterior portion of the ductus bursae; angu^stati 

 lacks the produced ventroanterior flap of the genital plate and the 

 pronounced anterior and posterior points of the signum ; the sclerotized 

 portion of the ductus bursae is longer in angustati than in whitmani. 



DEPRESSARIA LEPTOTAENIAE Clarke 



PL.VTE 37, Figures 202, 202a ; Plate 48, Figure 289 



Depressaria leptotaeniae CLmArke, Can. Ent., vol. 65, p. 87, pi. 4, 1933. — McDun- 

 NOUGH, Check list of the Lepidoptera of Canada and the United States of 

 America (Part 2, Microlepidoptera ) , No. 8396, 1939.— Gaede, in Bryk, Lepidop- 

 terorum catalogus, pt. 92, p. 286, 1939. 



Male genitalia. — Harpe rather short, broad, sparsely clothed with 

 hairs; clasper stout, long, curved toward the cucullus ; cucullus pointed ; 

 sacculus narrowly curved, with a prominent transverse, spinous basal 

 process, the spines numerous, rather small. Anellus a long sclerotized 

 plate ; posterior and anterior edges deeply concave ; lateral edges con- 

 vex. Vinculum rounded. Aedeagus stout, pointed, curved. Trans- 

 tilla a moderately broad sclerotized band with well-developed hairy 

 lobes. Socii small, hairy. 



Female genitalia. — Genital plate narrow with narrow, strongly scle- 

 rotized ventral sclerites, the latter narrower than the sclerotized part 

 of ductus bursae. Ostium triangular. Posterior portion of ductus 

 bursae broad, slightly curved, sclerotized ; inception of ductus seminalis 

 just anterior to ostium. Bursa copulatrix large with a well-developed 

 signum near posterior end. 



Alar expanse, 17-23 mm. 



Type. — In the United States National Museum. 



Type locality. — Pullman, Wash. 



Food plants. — Leptotaenia rrmlti-flda Nutt. and L. salmom-flora 

 Coult. and Kose. 



Distribution. — Northwestern United States and Canada in the inter- 

 mountain area. 



