Engel : Lepidoptera of Western Pennsylvania. 93 



occurs on berry blossoms and the writer observed it feasting on the 

 cadaver of a cow. Mr. Link took several specimens feeding on the 

 remains of a snake at Ohio Pyle, Pa. 

 4134. Dysodia oculatana Clemens. 



June 24-July 19. Common. The moth is crepuscular in its habits 

 and frequents the blossoms of the milkweed and the horse-chestnut 

 (^y£sczili/s). The larva lives on the white snakeroot (^Eupaforium 

 ageratoides Linn. ) . It partly severs the midrib of the leaf, causing it to 

 droop, when it is drawn into cone-shape and forms the abode of the 

 larva. 



Family COSSID^. 



4147. Prionoxystus robiniae Peck. 

 June 6-20. Common. 



4148. Prionoxystus macmurtrei Guerin-Meneville. 



Pittsburgh, June 4-8 (Krautwurm) ; New Brighton, May 30, June 

 3 (Merrick) ; Wilmerding, June 2 (Zahrobsky). 



Family SESIIDyE. 



4162. Melittia satyriniformis Hiibner. 



July 11-29. Common. The larva is injurious to pumpkin vines. 

 4170. Alcothoe caudata Harris. 



Pittsburgh, July 24-August 5, 1908 (Engel). The specimens were 

 bred from the roots of Clematis. Mature larvae and one cocoon were 

 collected on June 21. A female emerged July 24 from the cocoon 

 found on June 21. The pupal state ranges from 30-35 days. 

 4173. Podosesia syringae Harris. 



May 25-June 30. Common. The larvse occur in lilac and ash. 

 4175. Memythrus tricinctus Harris. 



Wilmerding, one specimen (Foerster). • 



4183. Memythrus asilipennis Boisduval. 



Millvale, May, one specimen (B. Krautwurm). 

 4191. Bembecia marginata Harris. 



August 8-September 12. Common. The variety albicoma Hulst 

 occurs with the typical form, but is less frequent. Larva in the roots 

 of blackberry. 

 4194. Sanninoidea exitiosa Say. 



June 30-August 14. Common. The larvae are destructive in the 

 base of peach, cultivated and wild cherry trees, and pupate under the 

 hardened sap which oozes from their borings. 



