78 



Insect Pests. 



The very glowing accounts so often given of the beneficent action 

 of introduced parasites is merely throwing back for years any possilile 

 advance that might be made in this interesting subject. 



TORTRIX MOTHS ON THE APPLE. 



(Torfriv ribcana, Hb. ; T. hcjjarana, ^icWiit ; Tor tr ix rosana, Lum. ; 



T. iwdana, Sc. ; Sideria acliatana, Tab. ; Pyrodes rJieediclla, 



Clerck. ; and Spilonofa ruljorana, Tr.) 



The above are the chief kinds of Tortrix Moths which have been 

 sent to me as feeding on the apple. 



Few of the Tortricidas are to be met with on the wing before 



Tortri. 

 Torti-ix {Lozotiinkt) heparana 



Tortrix (Lozotwnia) rosaiu 



June, but they go on appearing until August. The larvic are 

 very active and can usually be told by their curious sinuous back- 

 ward movements when they are touched ; they have the normal 

 number of legs, and can thus at once be told from the Winter Moth 

 lar\'ce. The foliage and blossom is devoured by them ; the former 

 they frequently roll up or nnite together with fine silken strands, and 

 the same is done with the blossom. In the young stages they feed 

 more freely, however, on the leaves, etc. The pupal stage is chiefly 

 passed in the tubes or spun-together leaves where they have been 

 feeding. The winter is mostly passed in the egg stage, but some 

 hibernate as small larv?e in cases of debris. 



