Si6 



CONNECTICUT GEOL. AND NAT. HIST. SURVEY. 



[Bull. 



Female: Length 5.8 mm., width 1.9 mm. ; more robust than the 

 male, usually more broadly pale ; pronotal disk with blackish stripe 

 each side of median line, extending from basal margin up to and 

 including the calli ; scutellum with median line pale ; clavus black, 

 corium with inner apical half blackish, pale color of basal half 

 not penetrating along claval suture to separate black of corium 

 from that of clavus. 



Breeds on Salix nigra. 



Holotype : Male, 3 July, 1920, McLean Bogs, Tompkins County, N. Y. 

 (H. H. Knight); author's collection. Allotype: same data as type. 

 Paratypes: Connecticut — Females (2), 5 June, 1921, Cornwall (B. H. 

 Walden). New York — Males (14) and females (8), 27 June, 1916, Honeoye 

 Falls (H. H. Knight). Male, i July, 1917, Cranberry Lake (C. J. Drake). 

 Nova Scotia — Females (2), 13 July, 1913, Truro (R, Matheson) ; these 

 specimens more broadly pale, the scutellum and pronotal disk with median 

 line pale. 



Fig. 85. Orthotylus knighti Van 

 Duzee, — male genital claspers, (a) 

 left clasper, lateral aspect, (c) right 

 clasper, lateral aspect. Greatly en- 

 larged. Drawing by Dr. H. H. 

 Knight. 



cruciaius 



Fig. 86. Orthotylus cruciatus 

 Van Duzee , — male genital 

 claspers, (a) left clasper, lat- 

 eral aspect, (c) right clasper, 

 lateral aspect. Greatly enlarged. 

 Drawing by Dr. H. H. Knight. 



O. knighti Van Duzee. 



Proc. Cal. Acad. Sci., ser. 4, vi, 121, 1916. 



Male: Length 5.4 mm., width 1.58 mm. ; black, spot on pronotal 

 disk, legs except apical half of hind femora, fulvous ; a broad pale 

 stripe extending full length of corium and connecting with pale 

 cuneus, in darker specimens somewhat obscured ; genital claspers 

 distinctive of the species (fig. 85). 



Female: Length 5.4 mm., width 1.66 mm. ; very similar to the 

 male but more robust ; pronotum more broadly fulvous. 



Food plant: Populus candicans. 



New York. 

 O. cruciatus Van Duzee. 



Proc. Cal. Acad. Sci., ser. 4, vi, 119, 1916. 



Male: Length 5.7 mm., width 1.7 mm.; pronotal disk broadly 



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