596 



CONNECTICUT GEOL. AND NAT. HIST. SURVEY. 



[Bull. 



Male: Length 5.8 mm., width 2.36 mm.; resembles pale and 

 yellowish specimens of belfragii, usually slightly larger and more 

 strongly yellowish brown in color; embolium and basal half of 

 corium pale yellowish, clavus and apical half of corium brownish 

 to dark brown, cuneus clear tinged with yellow ; readily distin- 

 guished by the two unusually large upturned prongs of the left 

 genital clasper (fig. 131). 



Fig. 131. Lygus ostryae Knight, — male genital claspers, (a) genital seg- 

 ment, left lateral aspect, (b) left clasper, dorsal aspect, (c) right clasper, 

 ventral aspect. Greatly enlarged. Drawing by Dr. H. H. Knight. 



Female: Length 6 mm., width 2.4 mm.; similar to the male in 

 coloration but in form slightly larger and more robust. 



Breeds on Ostrya virginiana. 



Massachusetts, New York, Vermont. 

 L. (Neolygus) nyssae Knight. 



Bull. Brook. Ent. Soc, xiii, 43, 1918. 



yssae 



Fig. 132. Lygus nyssae Knight, 

 — male genital claspers, (a) left 

 clasper, dorsal aspect, (b) lateral 

 aspect of left clasper and tip of 

 venter, (c) right clasper, ventral 

 aspect. Greatly enlarged. Draw- 

 ing by Dr. H. H. Knight. 



laureae 



Fig. 133. Lygus laureae Knight, 

 male genital claspers, (a) genital 

 segment, left lateral aspect, (not 

 to scale), (b) left clasper, dorsal 

 aspect, (c) right clasper, ventral 

 aspect. Greatly enlarged. Draw- 

 ing by Dr. H. H. Knight. 



