INSECT PESTS AND DISEASES. 177 



sulphur alone. On a small scale the trees may be dusted 

 over with flowers of sulphur, applying it directly to the 

 parts affected. Should the attack be widespread, and a 

 large number of trees are mildewed, the most economical 

 and expedient method to pursue, would be to syringe the 

 trees by means of a garden engine, using some of the 

 preparations containing sulphur. 



The Pear. 



MOTHS. 



A large number of insects that attack the apple also 

 prey upon the pear. The following moths may be men- 

 tioned, namely, the Winter Moth, Goat Moth, Wood 

 Leopard Moth, Pale Brindled Beauty, Mottled Umber, 

 Scarce Umber, Codlin Moth, Green Pug, and the Small 

 Brindled Beauty, and the Pale Oak Beauty may also 

 prove troublesome. See under Apple for the description 

 of the above, and the remedies to be applied. 



PEAR TREE BLISTER MOTH (Lyonetia dercJceUa) . The 

 larvae of this tiny moth mine the leaves not only of the 

 pear, but also the apple and cherry. They seem, how- 

 ever, to give most trouble with the first mentioned, 

 making long winding galleries, and brown, blister-like 

 patches in the leaves. The larva is pale green, very 

 small, and carries on its work in May, June, and July, 

 while a second brood also appears in September and 

 October. The perfect insects, on the other hand, come 

 forth in June, July, and August, and the second brood at 

 various times during November, and again in April. 

 They measure only about 3 in. across the fore wings, which 

 are white with a black spot at the apex, and generally 

 some bi'ownish longitudinal markings above the middle ; 

 but the whole wing is of a bronzy brown, obliterating the 



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