﻿Thr Life History of ihc Birch Tiiigid 115 



PLATE V 

 Corythucha pallipes Parshley 



Fig. a. adult. 



Fig. b, lateral view of hood and median carina. 



Fig. c. egg. 



Fig. d, first n^^nphal stage. 



Fig. r, second nvmphal stage. 



Fig. /, third nvmphal stage. 



Fig. 0, fourth nTrnphal stage. 



Fig. h. fifth nvTTiphal stage. 



Fig. 45, Yellow Birch Leaves showing eggs, nymphs and adults. Xote dis- 

 colored areas caused by feeding punctures. 



Literature Cited 

 Drake. Caiu. J. 



1919. On some Tingidae Xew to the Fauna of Canada. Canadian Ento- 

 mologist, Vol. LI, pp. 159 and 160. 



GlBSOX, Edmtj?\'d H. 



191S. The Genus Corythucha Stal. Transactions i>f the American Ento- 

 mological Society, Vol. XLIV, pp. 69-105. 



Paksiiley. Howard M. 



1919. Xew England Hemiptera-Heteroptera. Canadian Entomologist, Vol. 



LI. pp. 70-73. 



1920. Hemipterological Notices I (Tingidae^. Entomological News. Vol. 



XXXI, pp. 271-275. 



