SUBFAMILY I. — ARADIN.-E. 291 



KEY TO EASTERN SPECIES OF GROUP I, ARADUS. 



a. Side margins of abdomen almost entire; pronotum widest slightly 



behind the middle. 215. ^EQUALIS. 



aa. Side margins of abdomen strongly crenate; pronotum widest in front 



of middle. 216. crenatus. 



215 (360). Aradus .equalis Say, 1832, 29; I, 352. 



Oval. Wood-brown to fuscous; reflexed margins of pi'onotum, basal 

 expansions and veins of corium, margins of scutellum at middle, hind 

 margins of connexival segments and a few spots on membrane dull yel- 

 low; legs yellow, the femora and tibiae brown at middle; antennae with 

 first joint and basal portion of second and third dull yellow. Head as 

 long as broad across the eyes, granulate above; tylus short, blunt, cy- 

 lindrical; antenniferous spines rather stout, acute, feebly divergent; an- 

 tennae cylindrical, joint 2 slightly longer than 3, the latter twice 

 the length of 4; beak reaching behind front coxae. Pronotum with side 

 margins broadly reflexed, their edges finely crenulate; disk with median 

 carinae strongly elevated in front of middle. Scutellum elongate-tri- 

 angular with short median basal carina. Elytra with corium broadly 

 expanded at base, its edge crenulate. Connexivum broadly exposed, its 

 margin entire. Male with sixth ventral twice as long as fifth, the 

 elytra extending nearly to its tip; female with elytra reaching base of 

 dorsal genital segment, the hind margin of the broad lobes of this seg- 

 ment obliquely truncate. Length, 8.2 — 10 mm. (PI. I, fig. 1). 



Southern half of Indiana, scarce, April 3 — Aug. 13 ; not 

 taken north of Putnam County. Ranges from Quebec and New 

 England west to Illinois and southwest to Oklahoma and Texas. 

 While Say's types were from Indiana it appears to be a rare 

 species in this State, as I have taken only half a dozen adults in 

 40 years. The published records elsewhere are few. The A. 

 duryi Osborn (1903, 39) described from a Cincinnati specimen, 

 is a synonym. 



216 (379). Aradus crenatus Say, 1832, 28; I, 350. 



Broadly oval; thickly and coarsely granulate above. Dull brown- 

 ish-yellow or pale brown with fuscous markings on pronotum, scutellum 

 and connexival segments ; membrane with two or three oblique fuscous 

 lines or blotches; antennae and legs yellowish, the femora and tibiae an- 

 nulate with brown. Head as long as pronotum, a little longer than wide; 

 tylus short, broad, obtuse; antenniferous tubercles, stout, feebly di- 

 vergent; impressions of vertex short, deep, curved; antennae slender, 

 cylindrical, joint 2 slightly longer than 3, the latter one-half longer 

 than 4; beak reaching front coxae. Pronotum with side margins widely 

 expanded and reflexed, their edges with irregular teeth; disk with 

 median carinae nearly evenly elevated throughout, the others distinct 

 only on basal half. Scutellum rather broadly triangular, strongly taper- 

 ing, margins strongly elevated, apex acute. Elytra with corium mod- 

 erately expanded at base, thence narrowed to apex. Connexivum broad- 



