April, '10] PARROTT: CHERRY ERMINE MOTH 161 



leaves of the leaf buds. In the early part of May they then burrow 

 into the parenchymatous tissues of the leaves. As many as a dozen 

 of the caterpillars may exist in one colony. The presence of the pest 

 is indicated at this time by the injured leaves turning red in spots. 

 Later abandoning their mines, the larvae feed openly on the foliage, 

 and spin webs in which they live together in colonies. During the 

 month of June the larger tents are formed, and in severe attacks the 

 tree is stripped of its foliage, and is covered with a sheeting of the 

 dirty, ragged remains of their discolored webs. The cocoons are spun 

 side by side in the nest, in which the larvae pupate and from which the 

 moths commence to appear in early July. The life history of padellu 

 differs from that of maUneUa in that the larva? are not leaf miners. 



Distribution of the Cherry Ermine Moth, The Cherry Ermine 

 Moth has only been found in one locality in the State of New York. 

 Eight nests were obtained, and with the exception of a few cater- 

 pillars, which were kept in the laboratorj^ to breed adults, the material 

 was destroj^ed. Repeated examinations failed to find any more evi- 

 dences of the insect in this plantation, which like all other plantings 

 of foreign stocks, has been under very close supervision this year, 

 because of the discovery during the early spring of nests of the Brown- 

 Tail Moth among these same importations. Present knowledge indi- 

 cates that the Ermine ]\Iotli has not established itself in this state. 



Inspection of Foreign Shipments of Nursery Stock. The dis- 

 covery of this insect is a good example of the importance and value 

 of efficient inspection and of the need of a closer surveillance of for- 

 eign shipments of nursery stock. Owing to their destructive character, 

 entomologists should be on the lookout for evidences of the Ermine 

 ]\Ioths in nursery plantations, especially of recent importations, as 

 these insects can be introduced in such shipments, and if once estab- 

 lished they may prove a serious menace to our nursery and orchard 

 interests. 



For the protection of nurseries, inspectors should be on the alert 

 for plants, enclosed with webs, which should be immediately uprooted 

 and destroyed. Sprajdng with arsenicals has been found in France 

 to be an effective remedy for the treatment of orchards. 



President Britton: The next paper will be read by Prof. F. L. 

 Washburn, St. Anthony Park, Minn., entitled "Further Obseiwations 

 on the Apple Leaf Hopper (Empoasca mali) and Notes on Papai- 

 penia nitela and P. catapKracta. 

 4 



