Potato Tuber Moth 



{Phthorim&a operculella) .- 



Imported Cabbage Web Worm A-Moth. B-Larva, lat- 



(Hellula undahs). 1 era i v i ew . C— Larva, dorsal 



A— Mature moth. B— Larva, lateral view. view. D— Pupa. E. F— Seg- 



C — Larva, dorsal view. D— Pupa. 



times natural size. 



All three merits of larva, enlarged. (Re- 

 drawn from Riley and Howard.) 



Work of the Potato-Tuber Moth. 

 Exterior view of potato. 



■Bur. Ent. Bull. 19. 



(986) 



2 Farm. Bull. 557- 



