238 (March, 



NOTES ON BRITISH TORTRICES. 

 BT C. a. BAERETT, 

 (Continued from page 195). 

 Dichrorampha phimhagana, Tr. Kaltenbach records, ou tbo autho- 

 rity of Muhlig, that the larva of thia epeciea feeds in autumn in the 

 stems of Achillea millefolium and Tanacetum rulgare. In the case of 

 the latter plant, he has doubtless confounded this species with D. 

 tanaceti, but the other proves to be correct. In February, 1S78, I 

 examined numbers of plants of yarrow {Achillea inillefolluvi) growing 

 in quarries and on railway banks, in places frequented by D. plumha- 

 gana, and found a number of larvae in small stunted plants in very 

 stony places. These larva? were, when young, moderately slender, 

 clear semi-transparent yellowish-white, with distinct brown internal 

 dorsal vessel, head light brown, jaws black, dorsal and anal plates very 

 pale brown. When full grown, more plump, and the colour dull 

 yellowish-white. The young larvae feed singly in galleries under the 

 bark, at the base of a previous year's flower-stalk of the Achillea, but 

 afterwards penetrate to the middle of the stem, and eat out the pith 

 down into the root-stock. When this fails, they sometimes enter the 

 root-stock of a young shoot, which then betrays their presence by its 

 drooping leaves. They continue to feed until May, assume the pupa 

 state in the burrow, and the moths emerge early in June. 



Dichrorampha acuminatana, Zell. I think that no description of 

 the larva of this species has been published. The first hint of its 

 habits that I received was from Mr. E. Meyrick, who mentioned that 

 he had found larvae in shoots of Chrysanthemum leucanihemum which he 

 believed belonged to this species, but failed to rear. This information 

 was afterwards confirmed by Messrs. Hodgkinson and Threlfall, who 

 have, I believe, reared this species. 



In February, 1878, I found larvae in stems of old plants of Chry- 

 santhemum leucantliemum . They were thick and rather stumpy, but 

 slightly smaller at both extremities, colour semi-transparent whitish 

 (faintly dirty greenish when young), with a distinctly visible brown 

 dorsal vessel. Head light brown, with a darker line down the middle 

 of the face, joints blackish, dorsal and anal plates very pale yellowish, 

 hardly distinguishable. Feeding in the lower thick part of the stem 

 of the Chrysanthemum leucanihemum (ox-eye daisy), burrowing passages 

 under the bark or skin. Active when removed from the burrow. This 

 larva grows but slowly, but by April has bored into the middle of the 

 stem or root-stalk, to feed on the pith, and here it apparently changes 

 to pupa, the moths appearing early in June. 



