REVISION OF THE OECOPHORIDAE — CLARKE 131 



cilia light fuscous. Hind wing shining grayish fuscous. Legs 

 whitish ochreous, the fore and mid legs strongly overlaid with fus- 

 cous; hind legs lightly so with their tarsi fuscous and annulated with 

 whitish ochreous. Abdomen light fuscous above, whitish ochreouS 

 beneath with a lateral stripe on each side and irrorations blackish 

 fuscous. 



Mate genitalia. — Harpe lightly clothed with hairs; costa heavily 

 sclerotized; clasper divided, the arms long, of about equal length; 

 one arm, parelleling the sacculus, stout and sharply pointed ; the trans- 

 verse arm curved, reaching costa and having a lateral thornlike 

 process projecting toward the sacculus. Anellus a more or less 

 shield-shaped plate, deeply excavated on the posterior margin, the 

 excavation, in the main, being formed by two heavily sclerotized, 

 winglike processes. Vinculum broad, rounded. Aedeagus stout, 

 straight, bluntly pointed, with a large spinulate patch about the 

 middle. Transtilla a broad sclerotized band. Gnathos reniform. 

 Tegumen bifid. Socii rectangular flaps bearing a few hairs. 



Female genitalia. — Genital plate narrow at the middle, the entire 

 width being taken up by the rectangular ostium, then broadening 

 laterally. Ductus bursae short, broad, and membranous. Bursa 

 copulatrix large, oval; signum a large, elongate oval plate, slightly 

 broader anteriorly than posteriorly, with long, spinelike projections 

 at the posterior end. 



Alar expanse, 16-19 mm. 



Type. — In the British Museum. 



Type localities. — Mount Shasta, Calif., and "North Oregon." 



Food plants. — Balsamorhiza sagittata (Pursh) Nutt. and Helian- 

 fhits pumilits Nutt. 



Distribution. — Western United States and Canada. 



United States records 



Arizona: White Mountains, Apache Indian Reservation, alt. 7,000 ft., 5 $ ^, 

 3 5 9 (June 1925, O. C. Poling) ; 5, 9 (July 5-15, 1925) ; ? (August 1-15, 

 1925). 



California: Mount Shasta, $ ; Placer County, $ (September), 



Colorado: Williams Range, $ (August 8, A. J. Snyder). 



New Mexico: Fort Wingate, $ (July 16-23). 



Oregon: "Camp Watson" 2 $ S (III, IV, 1872, Walsingham). 



Utah: Stockton, 2 $ $ (IX-6, IX-7-07, Tom Spalding) ; Eureka {$, VII-13-11, 

 $ , VIII-14-11, 9 , VIII-29-11, Tom Spalding) . 



Washing'ton: Almota, Whitman County, $ (IV-5-30, J. F. G. Clarke) ; Pull- 

 man, 2 $ $ (III-1-98, C. V. Piper), 9 (11-17-30, D. H. Brannon), 

 $ (VII-26-32, T. M. Clarke [reared]), $ (IV-13-26, J. F. G. Clarke), 9 

 (II 1-26-30, J. F. G. Clarke) ; Snake River, Whitman County, opposite 

 Clarkston, $ (IV-28-32, J. F. G. Clarke) ; Wenatchee, 2 $ $ (VI-5-30, 

 VI-10-30, A. Spuler), 9 (rX-5-29, A. Spuler). 



