786 FAMILY XXIX. — MIRID^E. 



elytra entire, surpassing abdomen by two-thirds the length 

 of membrane. Nine species and two varieties have been 

 described from the eastern states. All breed on the foliage of 

 ash. 



KEY TO EASTERN' SPECIES OF NEOBORUS. 



a. Upper surface practically glabrous. 

 b. First joint of antennae pale, rarely slightly dusky. 

 c. Corium without a curved reddish or blackish line, which is widened 

 to cover its apical fourth; membrane wholly pale or only faintly 

 tinged with dusky. 

 d. Upper surface black or piceous-black; cuneus pale, its apex dark- 

 er; corium sometimes with a small pale spot at base. 



822. GEMINUS. 



dd. Upper surface more or less pale; pronotum and apical third of 



corium usually marked with reddish; scutellum in great part 



or wholly pale. 823. amcenus. 



cc. Corium with a reddish or blackish line beginning on outer margin 



of radius, curving inwardly and widened to cover the apical 



fourth of corium; membrane with a fuscous spot at base and 



another at apex of its larger cell. 824. palmeri. 



bb. First joint of antenna? brownish-black; scutellum brownish-black, 



its sides or basal angles pale; elytra brownish-black to piceous, 



the basal half or more of corium and embolium pale or yellowish. 



825. GLABER. 

 aa. Upper surface distinctly pubescent. 

 e. Basal joint of antenna? blackish. 

 /. Cuneus always pale ; scutellum brownish at middle of base, or 

 brown with median line and margins paler; elytra often in 

 great part fusco-brownish. 826. canadensis. 



ff. Cuneus reddish-brown; scutellum brownish-black each side of 

 median line, its basal angles paler; elytra reddish-brown, sub- 

 translucent. 827. RUFUSCULUS. 

 ee. Basal joint of antenna? pale. 



g. Upper surface, including scutellum, black; cuneus pale translu- 

 cent; legs pale; larger, length 6 or more mm. 828. tricolor. 

 gg. Upper surface more or less pale; scutellum in part yellow; small- 

 er, not over 5.2 mm. 

 h. Scutellum with entire median line black; female with embolium 

 and outer margin of corium blackish, inner apical angle of 

 corium pale. 829. vittiscutis. 



hh. Scutellum yellow or with base blackish, never with median line 

 black; female with embolium chiefly pale, inner apical angle of 

 corium black. 830. pubescens. 



822 (1042). Neoborus geminus (Say), 1832, 24; I, 344. 



Elongate-oblong. Black or piceous, glabrous, shining; head reddish- 

 brown, tylus, cheeks and some vague marks on vertex piceous-brown; 

 pronotum and scutellum shining black, the lateral and basal margins of 



