REVISION OF THE OECOPHORIDAE — CLARKE 91 



ochreous ; thorax suffused and irrorated with fuscous ; pale basal shade 

 of fore wing with black suffusion on extreme base of costa, a black 

 spot in fold and followed by a fuscous shade that does not reach costa ; 

 on the inner margin, at angle, an elongate black blotch in the fuscous 

 shade; along costa and around termen a series of blackish-fuscous 

 spots; apical third of costa roseate; at basal third two black discal 

 spots, obliquely one above the other, followed by a fuscous shade ; at 

 end of cell a white discal spot edged with black; cilia grayish fuscous 

 suffused with reddish. Hind wing shining gray; cilia concolorous, 

 with strong reddish suffusion. Legs whitish ochreous strongly over- 

 laid with fuscous except at joints; tip of tibia of first leg and the tips 

 of tibia and first tarsal segment of second leg, carmine ; tibia of hind 

 leg with strong reddish suffusion. 



Male genitalia. — Harpe broad, moderately sclerotized, sparsely 

 clothed with fine hairs ; sacculus slightly emarginate at base of clasper, 

 otherwise parallel with costa; harpe not narrowing toward the broad, 

 rounded cucullus; clasper very short and slender, scarcely reaching 

 past the middle of the harpe. Anellus an oval plate constricted basally 

 and produced posteriorly, with hairy, lateral lobes. Vinculum 

 rounded. Transtilla a broad but lightly sclerotized band with small 

 narrow, lateral lobes. Gnathos an oval, spined knob. Socii mod- 

 erately clothed with fine hairs. Aedeagus slender, curved, pointed; 

 dilated slightly basally and with a well developed sclerotized arm by 

 which the aedeagus articulates with the anellus; vesica armed with 

 numerous fine, weak cornuti. 



Alar expanse, 22 mm. 



Type. — In the British Museum. 



"^we locality. — Mount Shasta, Calif. 



Food plants. — Arnica angusti folia (Vahl) (?) ; Erigeron sp. (Dr. 

 Braun's record). 



Remarks. — ^I have received a male and a female of this species from 

 Dr. Annette F. Braun, of Cincinnati, Ohio. This is the first record of 

 the occurrence of this species since its discovery at Momit Shasta, 

 Calif., by Lord Walsingham in 1871. Dr. Braun's material was reared 

 from larvae collected at Hoh Lake, Olympic Mountains, Wash., 

 August 13, 1936. The moths emerged September 2, 1936. This record 

 extends the known range of the species 1,000 miles northward. 



Notes made in the field by Dr. Braun are as follows : "Larvae in the 

 top of Erigeron shoot, webbing together the uppermost leaves and 

 flowerbuds ; very dark purplish in color, with paler tubercles." 



The food plant, as recorded by Dr. Braun, casts some doubt on 

 the correctness of Lord Walsingham's determination of the host of 

 ai^icella. Both food plants are Compositae, but I question Lord 

 Walsingham's record. 



