774 FAMILY XXIX. — MIRIDjE. 



fuscous, 3 almost three-fifths the length of 2, 4 two-thirds as long as 3. 

 Beak reaching base of first ventral. Pronotum and elytra minutely in- 

 distinctly punctate. Length, 5.2 — 5.4 mm. 



Wanakena, N. Y., July 15 (Gerhard) . Known from New Eng- 

 land, New York and Colorado. Drake (1923, 74) records it as 

 very common on willow in moist shady situations in the Cran- 

 berry Lake region of New York. 



801 (1020). Lygus invitus (Say), 1832, 24; I, 345. 



Dark greenish or reddish-brown to blackish, thinly clothed with fine 

 prostrate yellow hairs ; pronotum often with sides more or less fuscous- 

 brown, disk with a greenish-yellow median line, this sometimes entire, 

 more distinct in the darker males; clavus and apical two-thirds of 

 corium usually darker than pronotum; basal half of embolium and entire 

 cuneus pale translucent yellow; membrane fuscous with ill defined paler 

 spots toward apex; legs greenish-yellow, the apical half or more of hind 

 femora darker; tips of tarsi and beak piceous; under surface dull green- 

 ish-yellow, the sides with a broad fuscous stripe reaching from hind mar- 

 gin of propleura to genital plate. Joints 1 and 2 of antennae greenish- 

 or brownish-yellow, 2 tinged with dusky toward apex, more than three 

 times the length of 1 ; 3 and 4 wholly fuscous, united equal in length to 

 2, 4 three-fifths the length of 3. Pronotum with calli evident, but not 

 prominent, smooth, shining, disk behind them finely strigose with mi- 

 nute punctures between the strigae. Elytra scabrous and very finely 

 punctate. Length, 5 — 5.7 mm. 



Marion Co., Ind., June 4 — 30, swept from foliage of poison 

 ivy and elm. Described by Say from Indiana. Its recorded 

 range extends from Quebec and New England west to North 

 Dakota and southwest to Kansas and New Mexico, but some 

 of the western records are doubtless to be referred to other 

 species. Knight states that invitus breeds mainly on elm, pre- 

 ferring always the young thrifty plants with succulent 

 shoots. The nymphs are pale greenish, hatching soon after the 

 leaves appear in spring from eggs that were inserted in the 

 twigs the previous July. The adults all disappear by the first 

 of August. 



802 (— ). Lygus fagi Knight, 1917, 603. 



Color a nearly uniform pale brownish-yellow, strongly shining, thinly 

 clothed with fine prostrate yellowish hairs; clavus a slightly darker 

 shade of pale brown; entire corium and cuneus a pale translucent yellow; 

 membrane with a dusky tinge, the veins paler; tips of beak and tarsi 

 fuscous. Beak reaching base of first ventral. Antenna? pale yellowish- 

 brown, the apical joints faintly tinged with fuscous; joint 1 as long as 

 head, 2 three times as long as 1, 3 three-fifths the length of 2, 4 two- 

 thirds as long as 3. Pronotum, except calli, finely closely but distinctly 



