Engel : Lepidoptera of Western Pennsylvania. 105 



Family PTEROPHORID^E. 



4931. Trichoptilus lobidactylus Fitch. « 



Pittsburgh, June 7-July 9 (Marloff, Engel). Flying in waste lands. 



4932. Oxyptilus periscelidactylus Fitch. 



New Brighton, June 17-July 15 (Merrick). At light and among 

 low herbage in woods. 

 4935. Oxyptilus tenuidactylus Fitch. 



June 13-July 7. Common on waste lands and at light. 

 4937. Platyptilia cosmodactyla Hiibner. 



New Brighton, May 7-18. Rare at light in woods (Merrick). 

 4941. Platyptilia carduidactyla Riley. 



Pittsburgh, June 29-July 28 (Engel, Marloff). 

 4956. Platyptilia marginidactyla Fitch. 



Pittsburgh, May 31-June 26 (Engel, Marloff); New Brighton, 

 May 2 1 -June 9 (Merrick). Common. 

 4962. Pterophorus homodactylus Walker. 



June 15-July 25. Rare. At light. 

 ► 4973. Pterophorus paleaceus Zeller. 



May 5-24; August 6-16. Common on waste lands and at light. 

 4977. Pterophorus Kellicotti Fish. 



Pittsburgh, May 26-June 27 (Engel, Marloff); New Brighton, 

 June 20 (Merrick). 

 4981. Pterophorus monodactylus Linnaeus. 



August 31-December 12, March, April. A common species. 

 Hibernating specimens may be taken, during warm spells in the winter, 

 4983. Pterophorus eupatorii Fernald. 



New Brighton, July lo-August 2. Rare at light in woods (Mer- 

 rick) ; Pittsburgh, July 5, one specimen at light (Engel). 

 4990. Pterophorus inquinatus Zeller. 



May 27-June 18; July 8-August 19. Common on waste lands and 

 at light. 



Family TORTRICID^. 



Subfamily Olethreutin^e. 



. Polychrosis viteana Clemens. 



May i6-June 17; July, August, September. Common in the 

 vicinity of wild grape vines in thickets. 

 . Polychrosis yaracana Kearfott. 



Pittsburgh, June 10, a specimen in the Carnegie Museum. 



