VOL. XIX. (i) NOTES ON THE CODLING MOTH 
75 
habits of the larva of this species is given. He says that on 
October 2nd, 1909, he found a large walnut tree on the ranch 
of Mr George Whitman, near Concord, California, with over 
50 per cent, of the nuts infested by larvae of the Codling Moth 
in all stages of growth. He mentions that the species has 
frequently been found in peaches and plums. It has also 
been reared from chestnuts. He states that the specimens 
were identified by Mr August Busck, who says that the Euro- 
pean Carpocapsa ptitaminana Standinger, recorded as feeding 
on walnuts in Europe, is now regarded as a variety of C. 
pomonella. 
There is also a paper by the same author, published in 
1911, on the Life History of the Codling Moth and its Control 
on Pears in California. From this it appears that there are 
practically two full broods of larv£e in the pear growing districts 
of the interior Counties of California. The subject is dealt 
with exhaustively in 51 pages. 
Last winter I had two larvae of this species in a box, and 
in April when examined it transpired that both had been 
stung by a parasite. The larvae of the parasite had consumed 
the Pomonella larvae, leaving only the skins, and had formed 
small brown cocoons. Shortly afterwards, these produced 
specimens of a Dipteron, or two-winged fly. I sent one of the 
flies to Mr Claude Morley, who identified it as the Tachinid fly, 
Blepharidea vulgaris, so common a parasite on the Gooseberry 
Moth [Abraxas grossulariata) . We have here apparently an 
interesting case of a parasite infesting alternately two different 
species of Lepidoptera. As far as I know this parasite has 
not been recorded from C. pomonella before. 
