Engel : Lepidoptera OF Western Pennsylvania. 131 



6228. Opostega albogallierella Clemens. 



June 1 2-July 20 ; August 7-2 1 . Common at rest on trees in forests. 

 6233. Bucculatrix ambrosiaefoliella Chambers. 



May 24-July 20; August 12-September 23. Common. 

 6238. Bucculatrix coronatella Clemens. 



Pittsburgh, May 20 (Engel) ; New Brighton, May 29-June 16 

 (Merrick, Engel). Rare. 

 6243. Bucculatrix magnella Chambers. 



Pittsburgh, July 11-29 (Marloff, Engel). 

 6246. Bucculatrix pomifoliella Clemens. 



Pittsburgh, May 5-20 ; July 20-September 29 (Engel, Marloff). 

 Common. 

 6254. Lithocolletes rileyella Chambers. 



May 5-14 ; July 24. Common in thickets. 

 6257. Lithocolletes lucidicostella Clemens. 



Pittsburgh, May 5-20; August 12 (Engel) ; New Brighton, May 

 5-13 (Merrick, Engel). 

 6267. Lithocolletes robiniella Clemens. 



April 29-May 29 ; August 2-November 21. Common. 

 6270. Lithocolletes blancardella Fabricius. 



March 25-May 14. Common. 

 6287. Lithocolletes cincinnatiella Chambers. 



Pittsburgh, May 29-August 5 (Engel); New Brighton, June 3-14 

 (Merrick, Engel). Rare. 

 6294. Lithocolletes ulmella Chambers. 



Pittsburgh, May 27-June 17 (Engel) ; New Brighton, May 14- 

 June 14 (Merrick, Engel). Rare. 

 6301. Lithocolletes basistrigella Clemens. 



Pittsburgh, June 29 (Carnegie Museum). 

 6310. Lithocolletes tilieacella Chambers. 



Pittsburgh, May 14-20 (Engel). Rare. 

 6316. Lithocolletes tritaeniella Chambers. 



Pittsburgh, May 3-22 (Marloff). 

 6334. Lithocelletes hamadryella Clemens. 



May 8-27 ; July 20. Common. 

 6337. Bedellia somnulentella Zeller. 



Pittsburgh, September 19-October 20 (Engel, Marloff). Rare. 

 6345. Gracilaria astericola Frey & Boll. 



Pittsburgh, May 22-June 8; August 28 (Marloff, Engel); New 

 Brighton, May 19-June 11 (Merrick). 



