ISrORTH AMERICAN LASPEYRESIINAE AND OLETHREUTINAE 137 



Bursa of female without signum. 



Alar expanse. — 11-14 mm. 



Type. — In Academy Natural Sciences, Philadelphia, 



Type locality. — Virginia. 



Food plant. — Blackberry. 



4. EXARTEMA FURFURANUM McDunnough 



(Fig. 78) 



Exartema furfuranum McDunnough, Cau Ent., vol. 54, 1922, p. 38. 

 Cymolomia furfurana Forbes, Memoir G8, Corucll Univ. Agr. Exp. Sta., 

 1924, p. 464. 



Very close to foedanuni and probably only a larger form of that 

 species. I am keeping it separate for the present as the genitalia 

 are considerably larger than those of typical foedanum. 



So far represented only by the type and paratype from Ottawa 

 and Quebec in the Canadian National Collection. 



Harpe of male genitalia figured from type. 



Alar expanse. — 16 mm. 



Type. — Canadian National Collection. 



Type locality. — Ottawa, Ontario. 



5. EXARTEMA OLIVACEANUM (Fernald) 

 (Figs. 66, 211, 400) 



Eccopsis olivaceana Feknald, Trans. Amer. Ent. Soc, vol. 10, 1882, p. 71. 

 Exartema olivaceanum Fernald, in Dyar List N. Amer. Lepid., no. 5016, 



1903. — Barnes and McDunnough, Check List Lepid. Bor. Amer., 



no. 6799, 1917. 

 Exartema bolandannm McDunnough, Can. Ent., vol. 54, 1922, p. 39. 

 Cymolomia olivaceana Forbes, Memoir 68, Cornell Univ. Agr. Exp. Sta., 



1924, p. 464. 



This species has been badly mixed in the collections. Over half 

 the specimens so named were either troglodanum or foedanum. In 

 general appearance, pattern, and color the three are very similar. 

 Clemen.s' foedanum can be separated by the broken basal patch of 

 fore wing; but olivaceanuni and troglodanum are so much alike that 

 they can be definitely determined only by their genitalia. The 

 pattern characters given in the key hold in the main and will help 

 to separate most specimens; but they break down in some, especially 

 the darker examples of troglodanum., and when the thorax is rubbed 

 can not be used at all. Fernald had no idea that there were two 

 species involved, for he frequently determined specimens of tro- 

 glodanum as olivaceanum. Of the so-called "homotypes" in the 

 Kearfott Collection, one is troglodanum and the other olivaceanum. 



