Iq6 new YORK STATE MUSEUM 



parks, in which latter place it sometimes occasions considerable injury. 

 This species is preyed on by the caterpillar of the little orange butterfly, 

 Feniseca tarquinius Fabr., which deposits its eggs among or near 

 groups of the plant lice as observed by Miss Morton. This caterpillar also 

 feeds on the related P. fraxinifolii and P. i m b r i c a t o r. 



The aphid can be controlled on cultivated trees by thorough spraying 

 with a contact insecticide, and where a good head of water is available, a 

 strong jet from a hose would probably be equally effective. 



Cottony maple scale 

 Pnlvinaria innuiiicrabilis Rathv. 



The smaller twigs of many soft maples are sometimes festooned on the underside 

 with cottony masses protruding from under a brownish scale. It occurs more sparingly 

 on other maples, elms and grapevines, as a rule. 



This species is generally distributed throughout the greater part of the 

 State, and occasionally becomes excessively abundant, specially on the soft 

 or silver maple, one of its favorite food plants. This scale insect flour- 

 ishes, particularly in certain seasons, on Long Island and in its vicinity. 

 Sometimes the trees are fairly festooned with masses of conspicuous 

 females. In 1890 it was so abundant in Brooklyn N. Y., as to lead Mr 

 A. S. Fuller to report that thousands of trees were dying from its attacks. 

 It was present in large numbers at Buffalo N. Y., the same year and 

 in 1898 many complaints of serious injury were received from widely 

 separated localities. 



Description. This pest, inconspicuous earlier in the season, most often 

 comes to notice after the females have attained their full growth late in 

 June or early in July and have excreted an abundant cottonlike substance, 

 which protrudes from under the scale covering the insect, as represented at 

 fio-ure II, on plate 2. The entire under surface of limbs is frequently 

 covered with these insects with their cottony fibers full of minute eggs and 

 young. A recently hatched scale insect is represented very much enlarged 

 at figure 10, on plate 2. The young soon forsake the protecting filaments 

 of the mother, wander to the leaves, settle along the veins as a rule, secrete 



