776 FAMILY XXIX. — MIRID^E. 



R. P. Park, Fla., March 17 ; one female swept from roadside 

 herbage. Differs from all our other species in the peculiar 

 mottling of both upper and lower surfaces and in the short 

 third and fourth antennals. 



805 < — ). .Lygus ostry^e Knight, 1917, 635. 



Pale brownish-yellow, thinly clothed with fine prostrate yellowish 

 hairs; clavus and a bar across apical fourth of corium a darker brown; 

 membrane with base and cells in great part fuscous, apical portion dusky; 

 legs and under surface greenish-yellow, a stripe on sides of ventrals, 

 tips of beak and tarsi and sometimes two bands on apical third of hind 

 femora, darker. Antenna? very slender, joint 1 and basal two-thirds of 

 2 pale straw-yellow, apical third of 2 fuscous, 3 and 4 dusky yellow; 1 

 three-fourths as long as width of head across eyes, 2 three times as long 

 as 1, 3 nearly one-half the length of 2, 4 three-fifths the length of 3. 

 Pronotum and scutellum finely transversely rugose, the former with the 

 punctures between the rugae scarcely evident. Elytra finely scabrous. 

 Males with two unusually large upturned prongs of the left genital 

 clasper. Length, 6 — 6.5 mm. 



Parry Sound, Ontario, and Portage, N. Y., June 27 — Aug. 7. 

 (Paris and Gerhard). Known only from Ontario, New England 

 and New York. Breeds on the hop hornbeam, Ostrya virginiana 

 (Mill.). 



806 ( — ). Lygus clavigenitalis Knight, 1917, 632. 



Pronotum yellowish-brown, paler on sides; scutellum yellowish, the 

 margins brownish; color of elytra as in key; embolium and cuneus pale 

 yellowish translucent, more or less tinged with green ; membrane fus- 

 cous-brown, veins and a vague spot near tip of cuneus paler; legs and 

 under surface yellowish or greenish, hind femora often tinged with 

 brown. Joint 1 of antenna? straw-yellow, one-third as long as width of 

 base of pronotum; 2 yellowish-brown, as long as pronotum; 3 and 4 

 pale fuscous, 3 nearly two-thirds as long as 2, 4 two-thirds the length 

 of 3. Vertex with basal carina prominent. Pronotum shallowly and 

 finely punctate. Length, 4.8 — 5.1 mm. 



Litchfield, Conn., July 22 (Walden). Recorded only from 

 New England and Maryland. Occurs at times on Alnus rugosa 

 (DuRoi) . "The females are likely to be confused with those of 

 tiluc and inconspicuus, but tiliee is more green, particularly the 

 pronotum, and the scutellum is darkened with fuscous ; incon- 

 spicuus is more greenish with fuscous marks on clavus and apex 

 of corium more in contrast." (Knight) . 



807 (— ). Lygus geneseensis Knight, 1917, 609. 



Dull greenish to straw-yellow, thickly clothed with conspicuous sub- 

 prostrate yellowish pubescence; clavus and inner half of corium dark 

 brownish, outer half of corium greenish-yellow tinged with brownish; 



