292 



FAMILY IX. — ARADID^E. 



ly exposed, the segments separated by a notch causing the obtusely cre- 

 nated appearance of abdomen. Male with fifth and sixth ventral seg- 

 ments subequal in length, genital segment carinate, its lobes long, the 

 elytra reaching their base; female with abdomen wider, the dorsal gen- 

 ital segment semicircular, its hind margin squarely truncate, the elytra 

 reaching its base. Length, 8 — 11 mm. (PL I, fig. 2). 



Southern half of Indiana, frequent, Feb. 20 — Nov. 17 ; not 

 taken north of Henry and Marion counties. West Point, N. Y., 

 June 18 (Davis). Hibernates in all stages beneath logs and 

 chunks whose sides are deeply buried in sand and mold. Oc- 

 curs in summer beneath bark of oak, soft maple, tulip, syca- 

 more, etc., more frequently in damp localities along the margins 

 of streams and ponds. The known range of this, our largest 

 eastern species, is a wide one, extending from Quebec and New 

 York west and northwest to Michigan and Illinois, and south 

 and southwest to Georgia, Alabama and Mexico. It is also 

 known from western Europe and the Palaearctic Region. Say 

 in his original description says the fourth joint of antennae is 



"a little longer than third," whereas it 

 is but little more than one half as 

 long. 



Group II. — Aradus. 



This group comprises only the 

 single species. 



217 (361). Aradus quadrilineatus Say, 

 1825, 326; II, 249. 



Broadly oval, finely and densely gran- 

 ulate above. Dark brown or fuscous; 

 apical third of second antennal segment and 

 posterior angle of each connexival seg- 

 ment, yellowish ; membrane fuscous, mot- 

 tled with whitish; tibia? yellowish, annulate 

 with darker. Head slightly longer than 

 wide; tylus stout, cylindrical, obtuse; an- 

 tenniferous tubercles slightly divergent, 

 subacute; impressions of vertex deep, ob- 

 B long, parallel; antennae stout, second joint 

 16, N. Y. St. nearly one-half longer and more slender 

 than third, fourth two-thirds the length of 

 third; beak reaching middle of front coxae. Pronotum with side margins 

 widely flattened, but feebly reflexed, their edges finely dentate; disk 

 with four carina? almost entire, well elevated, the outer pair almost 

 obsolete. Scutellum elongate-triangular, its sides strongly elevated. 

 Elytra with base of corium moderately expanded, finely dentate. Con- 



Fig. 63, X 7. 

 Tech. Publ. No 

 Coll. For.). 



