REPORT OF THE STATE ENTOMOLOGIST I9IO 55 



shows that the destructive work has continued without abatement, 

 there being several centers of infestation. One is near the north- 

 west corner of the park and is marked by a nearly dead maple tree 

 having a trunk diameter of about i8 inches and showing approxi- 

 mately fifty of the characteristic exit holes, some of them being a 

 year or more old. There has been a spread from this center of 

 infestation upon either side and the existence of adjacent trees is 

 threatened. Several similar centers were found on Cayuga street, 

 namely, a row of four dead or dying magnificent trees between 

 Second and Third streets, another on South Third street beside the 

 church facing Cayuga street, and a fourth at the corner of Cayuga 

 and Fourth streets. The above probably represents only a portion 

 of the maples seriously affected by this pest. A complaint accom- 

 panied by specimens shows this insect to be destructive to the 

 sugar maples at Carthage, and at Palmyra. 



Elm scurfy scale (Chionaspis americana John- 

 son). This species is more or less abundant upon elms throughout 

 the State. A very badly infested limb was brought in A^Eay lo, 1910 

 by Mr W. B. Landreth of Schenectady, with the statement that the 

 tree, set some twenty years previously, and with a trunk diameter 

 of about 15 inches, was in poor condition. Last year many of the 

 young leaves dropped when they were partly out and another crop 

 developed. The tree is said to be in a somewhat better condition 

 this year, though apparently far from vigorous. Judging from the 

 specimen submitted, this scale insect appears to be responsible for 

 the major portion of the injury, since the twig is well spotted with 

 scales and numerous crawling young are to be seen upon the bark. 



False cottony maple scale (Phena coccus aceri- 

 cola King). There has been an unusual number of complaints 

 concerning this insect, the majority coming from Mt Vernon and 

 vicinity, though reports of injuries were received from Newburgh 

 and Batavia. Personal observation showed that this pest was some- 

 what abundant on trees at Newburgh and, to a less extent, at 

 Hopewell Junction. 



This species is easily distinguished from the older and better 

 known cottony maple scale^ by the fact that it occurs in conspicuous 

 felted masses upon the trunks of infested trees and also forms 

 large, cottony aggregations on the foliage (fig. 6), two situations 

 where the cottony maple scale is never found with its contrasting 

 white covering. 



1 P u 1 V i n a r i a v i t i s I.inn. 



