75 2 CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [Bull. 



Tribe CORIZINI. 



Corizus Fallen. 



Key to Species. 



i. Transverse suture not looped; posterior lateral angles of meta- 

 pleura produced into an acute rounded angle; generally under 



6 mm 2 



Transverse suture of pronotum looped at each end; posterior 

 lateral angles of metapleura not much produced posteriorly, 

 obtuse; color brownish gray above, yellowish gray below, orna- 

 mented with variable darker markings; connexivum spotted; 

 length 6-8.5 mm crassicornis 



2. Scutellum narrow and acute apically, generally constricted at 



middle; sometimes not especially acute, in which case the sides 

 are nearly straight, without constriction at middle; pubescence 

 less prominent ; colors generally light ; length 5 mm. or more ... 3 

 Scutellum broad and rounded apically, distinctly constricted at 

 middle; body thickly pubescent; color dark brown, hemielytra 

 milky white, veins of the corial region darker ; size small, length 

 4-4.5 mm _ hirtus 



3. Scutellum constricted at middle, sides concave; transverse suture 



less prominent; lateral margins of pronotum not pale, or nar- 

 rowly so 4 



Scutellum not constricted at middle, sides nearly straight; trans- 

 verse suture of pronotum prominent and black; pronotum dis- 

 tinctly pale laterally; wings extending much beyond apex of 

 abdomen ; color above yellow, red, or sometimes very dark, 

 ornamented with darker markings ; sternum black ; connexivum 

 not distinctly spotted ; length 5.5-6.4 mm hyalinus 



4. Sides of head angulate at anterior inner corner of eyes ; tylus more 



expanded apically ; ventral plate of genitalia, viewed laterally, 

 with distinct posterior angles, posterior margin concave in the 

 male ; dorsal plate expanded apically in male ; rounded in 

 female ; connexivum generally unspotted ; disk of abdomen 

 usually ornamented with three small central dark spots ; general 

 color usually pale yellow or red with darker markings ; length 



5-6 mm lateralis 



Sides of head nearly straight; tylus less expanded; ventral plate 

 of genitalia almost without posterior angles ; not distinctly con- 

 cave in male ; dorsal plate rounded in male ; pointed in female ; 

 connexivum generally spotted ; disk of abdomen generally orna- 

 mented with a pale x-shaped mark; general color dark red or 

 brown with darker markings ; length 5-6 mm bohemani 



C. bohemani Signoret. 



Ann. Soc. Ent. Fr., Ser. 3, vii, 86, 1859. 



Scotland, 30 July, 1904, 8 Aug., 1905 (B. H. W.) ; New Haven, 9 June, 

 1905, 1 June, 1911 (B. H. W.) ; Meriden, 28 July, 1909 (A. I. B.) ; North 

 Branford, 2 June, 1921 (M. P. Z.). 



C. crassicornis (Linnaeus). 



Syst. Nat, Edn. 10, i, 448, 1758. 



This species has been recorded from Maine, New Hampshire, 

 Vermont and Massachusetts, but has not yet been taken in 

 Connecticut. 



