EnGEL : I.EPIDOPTERA OF WESTERN PENNSYLVANIA. 107 



. Exartema nigridorsanum Kearfott. 



Pittsburgh, June 23-July 3 (Engel, Marloff) ; Ohio Pyle, July 31 

 (Marloff) ; Pittsburgh, June 7-July 27 (Kahl & Klages). 

 . Exartema ochrixigranum Kearfott. 



Ohio Pyle, August i, 1905. Paratype in Carnegie Museum. 

 . Exartema sciotoanum Kearfott. 



Coraopolis, July 13. Paratype in Carnegie Museum. 

 5027. Exartema ferriferanum Walker. 



Pittsburgh, June 17-July 28 (Engel, Marloff) ; New Brighton, 

 June 26-July I (Merrick). Rare. 

 5031. Olethreutes nimbatana Clemens. 



June 7-19 ; July 13-28. Rare but generally distributed. 

 . Olethreutes separatana Kearfott. 



Pittsburgh, May 13-June 8 ; July 28-September 2 (Marloff, Engel); 

 New Brighton, June 2, August 28 (Merrick). 

 5038. Olethreutes hebesana Walker. 



May 14-June 14; xA.ugust i8-September 20. Common. 

 5041. Olethreutes hemidesma Zeller. 



New Brighton, September 25, one specimen (Merrick). 

 . Olethreutes removana Kearfott. 



Pittsburgh, July i, 1908; August 30, 1905 (Engel); New 

 Brighton, August 21 (Merrick). 

 5047. Olethreutes chionosema Zeller. 



Pittsburgh, June 26-July 6, three specimens (Marloff, Engel) ; 

 Jeannette, June 11 (Ehrman), in collection of W. J. Holland. 

 5050. Olethreutes nubilana Clemens. 



Pittsburgh, June 2-July 21 (Engel, Marloff) ; New Brighton, June 

 15-22 ; August i6-September 3 (Merrick). Rare. At light. 

 5054. Olethreutes albiciliana Fernald. 



May 29-June 24 ; July 2-September 19. Common. 



5056. Olethreutes coruscana Clemens. 



May 31-June 29. Fairly common and generally distributed. 



5057. Olethreutes constellatana Zeller. 



May 31-June 25. Very common in waste lands. 

 5064. Olethreutes instrutana Clemens. 



June 16-28 ; August ii-September 9. Common. 

 5071. Olethreutes bipartitana Clemens. 



May 7-28 ; July 2 9- August 24. Common in bottom lands. 



