SUBFAMILY III. — ORTHOTYLIN^E. 855 



cc. Upper surface with numerous small scattered patches of appressed 

 black scales; pronotum and elytra dark green; host plant, holly- 

 hock, Althtea rosea Cav. 930. althjeje. 

 bb. Antenna? with joints 3 and 4 and apical half of 2 fuscous-brown; 

 veins and cells of membrane pale brown. 931. concolor. 

 ««. Upper surface with inclined or suberect pubescent hairs only. 



d. Smaller species, length not more than 4.5 mm.; first joint of anten- 

 nae shorter than head. 

 e. Pubescence of upper surface blackish ; antennae and membrane 

 wholly pale; host plant honey-locust, Gleditsia triacunthos L. 



932. CHLORIONIS. 



ee. Pubescence of upper surface pale; apical half of antennae fuscous; 



membrane pale, its veins green; host plant burdock, Arctium 



minus Schk. 933. translucens. 



dd. Larger species, length more than 4.5 mm.; first antennal as long as 



or longer than head. 



/. Basal joint of antennae pale brownish-yellow; length, 5.5 — 6 mm. 



934. UNIFORMIS. 



//*. Basal joint of antennae brown or black; host plant, willow. 



g. Pubescence of upper surface fine ; basal joint of antennae brown ; 



length, 5 mm. 935. viridis. 



gg. Pubescence of upper surface coarse, conspicuous; basal joint of 



antennae black; length, 5.8 — 6.5 mm. 936. basicornis. 



929 (1172). Orthotylus flavosparsus (Sahlberg), 1842, 411. 



Oblong-oval. Pale green fading to greenish-yellow; head, calli and 

 lower surface dull yellow; membrane slightly dusky, the cells and veins 

 greenish; tips of tibiae and tarsi brownish. Upper surface with pubescence 

 as in key, in fresh specimens the pale buff scale-like hairs often form- 

 ing small spots on elytra. Vertex flat with a median depression in front 

 of basal carina, this more conspicuous in male. Pronotum twice as wide 

 as long, its basal margin straight. Elytra surpassing abdomen by less 

 than one-half the length of membrane. Length, 4 — 4.2 mm. 



Marion Co., Ind., June 12 — Aug. 22 ; swept from lamb's quar- 

 ters, grasses and other herbage along railway embankments 

 and roadsides. Cape Sable, Fla., Feb. 22 ; not before recorded 

 from that State {W. S. B.). Swannanoa, N. Car., July (Brim- 

 Icy) . A European species ranging in this country from Quebec 

 and New England west to the Dakotas and Kansas and south- 

 west to Virginia and Florida. Occurs mainly on Chenopodiam. 



930 ( — ). Orthotylus althmm Hussey, 1924, 165. 



Oblong-oval. Head, front lobe of pronotum and legs dull yellow; 

 hind lobe of pronotum and elytra dark green; membrane pale dusky 

 translucent, the veins whitish; under surface greenish-yellow; tarsal 

 claws fuscous. Pubescence as in key, the blackish, scale-like hairs con- 

 spicuous and scattered over the entire upper surface. Joints 1 and 2 of 

 antennae dull yellow, 1 slightly longer than width of vertex, 2 near'.y 



