INSEcTS AFFECTING PARK AND WOODLAND TREES 



689 



FiK. i.. 



i'rioza t r i p ti n c t a t a, en- 

 larged (original) 



on blackberry, wliich may prove to be its normal food plant. The following 

 ])aragraph is a summary of !\lr Sirrinc's biological account of this insect : 



Life history. Last stage nymi)hs were taken 

 Sep. 12 on blackberry and the first adults were 

 seen Sep. 29 and by Oct. 15 all had transformed. 

 The light yellow eggs are dei)ositcd in June and 

 [ul\- on blackberry, maturit\- being attained in 

 September or October, the adults hibernating in 

 sheltered places. 



Description. The perfect insect is about ^8 

 inch long with the wings deeply tinged with brown 

 along the veins and the entire body a yellowish brown color except the 

 darker eyes. The; )-oung are nearly pure white, ranging to a greenish 

 white and when seen l)y the unaided eye, resemble leaf mites or the young 

 of spiders moie than plant lice. 



Bibliography 

 1896 Sirrine, F. A. X. V. Agri( . Kxp. Sta. 14th Rep't, ]>. 19-23 



Woolly pine scale 

 Psciuiopliilippia quainlancii Ckll. 



A conspicuous snow-white, woolly scale is sometimes very abundant on the more 

 tender growths of pitch and southern yellow pine [pi. 51, fig. 3]. 



Examples of what are presumably this species w^ere received from 

 Oranee countv, New York, and Pike Pa., where the insect was extremely 

 abundant on thousands of young pitch pine. It may be at once recognized 

 by the thick woolly masses at the base of the pine needles, the woolly cov- 

 ering being conspicuous and easily detected at some distance. This scale 

 is known to the natives as "bleeding pitch" and "pitch pine wool." The 

 twigs turn brown and become brittle soon after the scales drop off. The 

 attack was confined largely to trees less than 14 feet in hight. The pest 

 was not observed on white pine, hemlock, spruce or larch in the infested 

 region. This species was found in 1897 by Prof. .\. L. Ouaintance at Lake 



