522 CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [Bull. 



O. serus Van Duzee. 



Proc. Cal. Acad. Sci., ser. 4, xi, 131, 1921. 



Male: Length 5.3 mm., width 1.58 mm.; black, median line of 

 pronotal disk and scutellum, pale; embolium, outer margin of 

 corium and cuneus, pale greenish, translucent; genae, gula, buc- 

 culae, rostrum except apex, sternum, and legs, greenish yellow ; 

 membrane and veins uniformly dark fuscous. 



Female: Length 5.56 mm., width 1.61 mm. ; very similar to 

 male in form and coloration ; hemelytra with costal margins nearly 

 parallel ; sometimes the pronotal disk, vertex, and front bordering 

 eyes, more broadly pale than male. 



Breeds on Crataegus and cultivated apple. 



New York. 



serus 



Fig. 95. Orthotylus serus Van Duzee, — male genital claspers, (a) left 

 clasper, lateral aspect, (c) right clasper, lateral aspect. Greatly enlarged. 

 Drawing by Dr. H. H. Knight. 



Diaphnidia Uhler. 



D. pellucida Uhler. 



Uhler, Hemiptera Colo., 44, 1895. 



Length 4.3 mm., width 1.4 mm.; uniformly pellucid greenish 

 white, the antennae included ; eyes and tips of tarsi fuscous. 



Food plants : Apple, Ostrya virginiana, and probably other 

 plants. 



New Haven, 7 July, 1920 (B. H. W.). 

 D. provancheri (Burque). 



Pet. Faune Ent. Can., iii, 144, 1887. 



Length 5 mm., width 1.2 mm.; pellucid greenish yellow, more 

 green on hemelytra than elsewhere ; tibiae lightly inf uscated ; 

 antennal segment ii black, following segments fuscous. 



Food plants : White oak, and probably other plants. 



Massachusetts, New York. 

 D. capitata Van Duzee. 



Bull. Buffalo Soc. Nat. Sci., x, 490, 1912. 



