No. 34-] HEMIPTERA OF CONNECTICUT: MIRIDAE. 49 1 



blackish; left genital clasper. with a long horn at the dorsal 

 extremity, internal arm slender (fig. 56). 



Predaceous on Eriosoma americanum Riley. 



Wallingford, 13 June, 19-11 (J. K. L.) ; Lyme, June (T. L. Guyton). 

 *D. quercicola Knight. 



18th Rept. State Ent. Minn., 138, 1921. 



Length 5.5-5.8 mm., width 2.4-2.8 mm. ; darker colored than 

 nitenatus, fuscous to blackish, calli black, apical half of membrane 

 fumate, rarely so pale as in nitenatus; left genital clasper with a 

 long dorsal horn which is very distinctive when taken in considera- 

 tion with the form of the internal arm (fig. 57). 



Occurs on Quercus alba. 



East River, June, 1910 (C. R. E.) ; New Haven, 8 July (W. E. B.), 7 

 July, 1920 (B. H. W.). 



D. quercicola var. pallens Knight. 



18th Rept. State Ent. Minn., 140, 1921. 



In structure and size similar to quercicola; calli more or less 

 pale, pronotal disk rather uniformly colored ; scutellum pale, 

 rarely with some blackish each side of median line; hemelytra 

 pale to yellowish, corium with a spot at middle, small one at base, 

 and irregularly at apex, blackish. 



Occurs on Quercus macrocarpa. 



New York. 

 D. davisi Knight. 



1 8th Rept. State Ent. Minn., 140, 1921. 



Length 5.3 mm., width 2.5 mm. ; slightly smaller than nitenatus, 

 uniformly brownish black ; legs and antennae chiefly pale, hind 

 femora with an incomplete dark annulus on apical half ; membrane 

 with apical half very faintly but uniformly stained with brownish, 

 veins and areoles darkened with brownish; closely related to 

 quercicola but the internal arm of left clasper more highly 

 developed (fig. 58). 



Staten Island, N. Y. 

 D. nitenatus Knight. 



|| Camptobrochis nitens Reuter, Acta Soc. Sci. Fenn., xxxvi (2), 56, 1909. 



18th Rept. State Ent. Minn., 141, 1921. 



Length 5.7-6 mm., width 2-2.9 mm - '■> general aspect very similar 

 to quercicola but more highly polished, calli black around the 

 margins only; dorsum rich brownish to dark brownish and 

 piceous, frequently brownish on scutellum but rarely blackish each 

 side of median line; brachium and apices of areoles dark fuscous 

 while the apical half of membrane is practically clear; male 

 genital claspers distinctive of the species (fig. 59). 



Predaceous on Eriosoma lanigerum. 



New Haven, 3 Aug., 1920 (W. E. B.). 



