126 BULLETIN 85, UNITED STATES NATIONAL MUSEUM. 



Arytaena ulicis Scott '76:529. 



Arytaena genistae Loew '78:597; '88: 19.— Scott '80:132.— Reutee '81:162.— 



Edwards '96: 250.— Sulc '05: 4.— Oshanin '07: 366. 

 Psyllopa magna Crawford 'lie: 628. 



Length of body (male) 2.1 mm.; (female) 2.5; length of forewing 

 3; width of head 1. General color light brown to brown; thoracic 

 dorsum more or less distinctly striped; genal cones, and often vertex 

 too, lighter colored; antennae dark, fuscous at base; legs light brown 

 to yellowish, tarsi yellowish ; forewings with a brown macula between 

 Rs and M in apical half, and a continuous or broken macula on 

 posterior margin apically. 



Head broad, often broader than thorax, not strongly deflexed; 

 vertex large, nearly half as long as broad, with two small fovese as 

 usual, bulging in front on each side of median line above genal cones, 

 somewhat emarginate at median line; genal cones nearly as long as 

 their basal width, broadly rounded at apex and only slightly divergent, 

 pubescent. Antennae a little more than twice as long as width of 

 head. 



Thorax large, broad, not strongly arched. Pronotum long. Hind 

 tibiae with a small spur at base. Wings hyaline, maculated as de- 

 scribed above, elongate, more than two and a half times as long as 

 broad, narrowly rounded at apex; pterostigma small. 



Genitalia. — Male. — Anal valve not much longer than forceps, 

 simple, pubescent; forceps thick and rather large, somewhat con- 

 stricted midway, apex broadened and bifurcate with a short posterior 

 point and a longer anterior process; pubescence silky. Female. — 

 Genital segment almost as long as rest of abdomen; dorsal valve 

 longer than ventral, both acute at apex. 



Described from many males and females from Woods Hole, Massa- 

 chusetts (T. D. A. Cockerell), on Spartinum sp. 



This species is widely distributed in Europe, and probably has been 

 brought into the eastern part of this country on some nursery stock. 

 The identity of Psylloj^a magna with this species was not discovered 

 until some time after the pubhcation of the description of the former. 



ARYTAINA RIBESI.ffi; CrawJord. 



Figs. 83, 84, 252, 253, 304, 306, 468, 470. 



Psyllopa ribesiss Crawford 'lie: 630. 



Length of body (male) 2.2 mm; (female) 2.7 to 3.3; length of 

 forewing 3 to 4; width of head 0.90 to 1.08. General color very light 

 brown (probably the more immature specimens) to brown or dark 

 blackish browh; thoracic dorsum with more or less pronounced 

 stripes; vertex variable from uniform reddish brown to mottled 

 brown and whitish; abdomen usually darker; antennae dark; fuscous 

 at base; legs light to dark. 



