No. 34-] HEMIPTERA OF CONNECTICUT: PENTATOMIDAE. 753 



C. hirtus Bueno. 



Ent News, xxiii, 217, 1912. 



This species occurs in Massachusetts, but has not yet been 

 recorded from Connecticut. 

 C. hyalinus (Fabricius). 



Ent. Syst, iv, 168, 1794. 



Occurs in Massachusetts but not yet recorded from Connecticut. 

 C. lateralis (Say). (PL xviii, 29.) 



Jour. Acad. Nat. Sci. Phila., iv, 320, 1825. 



Scotland, 25 July, 1904 (B. H. W.) ; Branford, 28 July, 1905 

 (H. W. W.) ; Yalesville, 16 Oct., 1906 (W. E. B.) ; New Haven, 5 Nov., 

 1910 (D. J. C.) ; 26 June, 1910 (B. H. W.) ; Orange, 21 May, 1911 

 (B. H. W.) ; Meriden, 24 May, 1914 (H. L. J.) ; Cornwall, 17 July, 1921 

 (M. P. Z.). 



Family PENTATOMIDAE. 



By Howard Madison Parshley, Sc.D. 



This is one of the largest families of the Hemiptera and the 

 species are usually recognizable at once by their peculiar and 

 characteristic habitus, although very diversified in size, coloration, 

 and habits. The scutellum is large, always extending at least to 

 the base of the membrane and in a few cases almost entirely cover- 

 ing the abdomen as in the Scutelleridae, and is provided with lateral 

 grooves or frena which are sometimes very short. The sexes are 

 easily distinguished by an examination of the external genitalia, 

 which in the male consist of an array of curiously formed hooks, 

 etc., covered wholly or partially, when at rest, by a single or rarely 

 double convex genital plate ; in the female there are several smaller 

 plates accurately fitted together. The terminology used is illus- 

 trated in figs. 168 and 169. 



Key to Subfamilies. 



1. First segment of the rostrum largely free, relatively short and 



thick; bucculae small, more or less distinctly united under the 

 rostrum posteriorly, hence converging; insertion of rostrum 



close to end of tylus Asopinae, p. 770 



First segment of rostrum largely embedded between the bucculae, 

 relatively slender; bucculae large, not united posteriorly, hence 

 more or less parallel; insertion of rostrum separated from 

 tylus by a space about equal to width of basal segment (Penta- 

 tominae Kirk.) • • • 2 



2. Tarsi two-segmented ; sternum with a distinct longitudinal keel ; 



frena extending almost to end of scutellum 



ACANTHOSOMATINAE, p. 769 



Tarsi three-segmented ; sternum without keel ; frena shorter 3 



3. Scutellum large, broad at apex, extending farther posteriorly than 



the corium ; frena very short Graphosomatinae, p. 754 



Scutellum smaller, more or less narrowed apically, generally 

 shorter than the corium; frena longer Pentatominae, p. 755 



