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THE MAPLE PSEUDOCOCCUS. 



( I'sendococcus aceris Geoff. ) 

 Bv L. O. Howard, 



Fift. ■Si.—Psi'udvcuccus aceris: a, adult females on leaf; &, young female 

 and males on bark — nalural size (original). 



There exists in parts of the United States a scale upon maple which 

 is identical with a European species, and which may have been 

 imported into this country. It bears a superhcial resemblance to the 

 common cottony maple scale {Pulvinaria innumerabilis'Rathv.).! and is 

 likely to be mistaken for the latter species at a hurried glance. The 

 latter insect, however, is very common, while the species under con- 

 sideration is rare, or at least has been rare until recently. But one 

 account of the insect in the United States has been imblished, and 

 this is Miss Emily A. Smith's ''Biological and other notes on Pseudo- 

 coccus aceris,''^ published in the Xorth American Entomologist for 

 April, 1880. This journal had but a brief existence and comparatively 

 few copies were published, so that this sole account is practically 



