Kew York Aguicultukal Experimext Station. 270 



bearing short, irregular projections. Plate XXXIX, Fig. 3 is 

 from photographs from life showing a single individual enlarged 

 and a group natural size. 



Economic hnpwtance. — Mealy-bugs are capable of inflicting 

 injury to the host plant in a manner similar to scale insects by 

 sucking the sap from the bark and leaves. A number of species 

 work upon the roots of plants. In the infested quince orcliard 

 some inj'ury was undoubtedly done, as the insects sucked the sap 

 from the limbs and twigs often from near the base of the buds. 

 In this case the amount of injury is only a question of numbers. 



Treatment. — As the insect is soft bodied, similar to the plant 

 lice, and during the spring and early summer lives openly on 

 the twigs, one or two applications of whale-oil soap, one pound 

 to five gallons of water, would quickly check it. Scraping the 

 trunk and large limbs during the winter where there is loose 

 bark and painting with a strong solution of whale-oil soap, one 

 pound to the gallon of water, would have a similar effect. 



IV. TWO APPLE LEAF MINERS. 



The minute caterpillars that mine into leaves are among the 

 most common of the insect pests. A number of species work in 

 the foliage of apple trees, but seldom in sulBcient numbers to do 

 serious injury. The past season, however, has been an excep- 

 tion in Western New York with at least three species, two of 

 which are briefly discussed here. The two species have occurred 

 in sufficient numbers to cause apprehension on the part of fruit- 

 growers in the western part of the State. Fortunately they 

 do not appear in very large numbers until late summer or fall 

 when most of the leaves are mature, thus making less injurious 

 the work of the caterpillars. 



ORNIX PRUNIVORELLA Cham. 



Order Lepidoptera. Family Tineidce. 



This species is probably widely distributed in Western New 

 York, but judging from the few references in the literature of 



