THE ENTOMOLOGIST 



Vol. XXXIV.l 



AUGUST, 1901. 



[No. 459. 



INTERMEDIATE FORMS OF AMPHIDA8YS BETULARIA. 



By Frank Littlewood. 



The accompanying illustrations represent varieties of A. 

 betularia recently bred by myself. On the night of August 15th 

 last year I discovered sixteen almost full-fed larvse of this species 



feeding on a plum-tree in my garden. They were by no means 

 easy to see on account of their exact resemblance to the twigs of 

 the plum, and I wish now that I had given the tree a more 

 thorough search. Knowing it to be a somewhat variable species, 

 I took as many as I could find, and fed them carefully for the 



ENTOM. — AUGUST, 1901. S 



