SUBFAMILY I. — ARADIN^E. 301 



ventral surface of abdomen reddish-brown vaguely mottled with yellow. 

 Head much longer than wide; tylus stout, cylindrical, feebly tapering, 

 reaching middle third of second antennal; antenniferous spines slender, 

 acute, strongly divergent; impressions of vertex wide, rather shallow; 

 antenna? slender, cylindrical, almost as long as head and pronotum 

 united, second joint two and a half times longer than third, the latter 

 nearly twice the length of fourth. Pronotum with sides flattened, mod- 

 erately reflexed, margins straight from apex to middle, thence rounded 

 to base, edge regularly dentate, more coarsely behind ; disk with two 

 median carina? parallel, entire, the others oblique, interrupted, all higher 

 in front. Scutellum elongate-triangular, apex subacute, sides moder- 

 ately elevated. Basal expansion of corium, rather long, broadly round- 

 ed. Male with fifth ventral slightly shorter than sixth, genital short, 

 strongly convex, lobes short, elytra reaching their base; female dorsal 

 genital two-thirds as long as broad, its front margin broadly curved, 

 hind one truncate at middle, elytra reaching its base. Length, 6 — 9.5 

 mm. (PL I, fig. 19). 



Georgetown, Colo., July 29 (Gerhard). A variable species of 

 wide distribution, especially northward, its known range ex- 

 tending from Nova Scotia and New England west and north to 

 Washington, British Columbia and Alaska. It is not known 

 from the southern Ohio Valley states but occurs in Colorado, 

 Arizona and California. The type was from Hudson's Bay and 

 its known synonyms, according to Parshley, are luteolus Fyles 

 (1903, 75) ; hubbardi Heid. (1904, 232) and taylori Van D. 

 (1920, 335). 



227 ( — ). Aradus basalis Parshley, 1921, 54. 



Oval. Dark brown or grayish-brown; basal angles of pronotum, 

 basal two-thirds of corium, tip of scutellum and a spot behind it on 

 membrane, hind margin of each connexival segment, inner margin of 

 genital lobes and tips of second and third antennal segments, dull yel- 

 low; legs brown, the tips of tibia? pale. Head longer than broad; tylus 

 cylindrical, obtuse; antenniferous spines slender, acute, feebly divergent; 

 impressions of vertex, elongate, subparallel; antennae slender, slightly 

 longer than head and pronotum united, second joint two and one-half 

 times as long as third, the latter one-half longer than fourth; beak 

 reaching onto mesosternum. Pronotum with side margins narrowly 

 explanate, but slightly reflexed, their edges finely toothed, hind angles 

 broadly rounded ; median carina? low, lateral ones obsolete on apical 

 third. Scutellum rather broadly triangular, its margins strongly ele- 

 vated ; disk granulate, its basal impression subobsolete. Basal expansion 

 of corium elongate, broadly curved, its edge and that of connexivum 

 finely crenate. Connexivum broadly exposed, much more so in female. 

 Male with fifth and sixth ventrals subequal in length, genital segment 

 short, strongly convex, lobes short, elytra reaching their base ; female 

 with abdomen broadly oval, hind margins of dorsal genital curved, elytra 

 strongly narrowed, reaching base of genital segment. Length, 7 — 8.3 

 mm. (PL I, fig. 20). 



