SUBFAMILY II. — CAPSIN^E. 793 



Crawford Co., Ind., May 19. Its recorded range extends 

 from Quebec and New York west to Minnesota. Food plant 

 the black ash. 



832 (1047). Xenoborus plagifer (Reuter), 1909, 51. 



Elongate-oblong. Greenish-yellow, glabrous, shining, with dark mark- 

 ings as in key, tylus and some irregular marks on vertex brown; scutel- 

 lum yellow, its narrow side margins, inner half of clavus, commissure, 

 and a spot on apical third of corium, dark brown to fuscous-black; 

 embolium and cuneus except apex, yellowish-translucent; legs greenish- 

 yellow, the tip of beak and apical joint of tarsi blackish; under surface 

 pale along middle, but with a broad dark stripe along the sides. Anten- 

 nae slender, joints 1 and 2 blackish, 1 about as long as width of head 

 across eyes, 2 twice as long as 1 ; 3 and 4 dusky, 3 two-fifths as long as 

 2, 4 half the length of 3. Pronotum, except calli, coarsely, deeply, rather 

 closely and evenly punctate, its hind angles and basal margins broadly 

 rounded. Scutellum and clavus transversely rugose with coarse punc- 

 tures between the rugae; corium finely and sparsely punctate, the punc- 

 tures without hairs. Length, 5 — 5.3 mm. 



Carlton Co., Minn., Aug. 18 (Minn. Univ. Coll.). Recorded 

 only from Ontario, New York and Minnesota. Occurs on the 

 black ash, Fraxinus nigra Marsh. 



833 ( — ). Xenoborus neglectus Knight, 1917a, 82. 



Elongate, sides subparallel. Head dull yellow, flecked with reddish, 

 the lower half fuscous, vertex with basal carina and median dash black- 

 ish; antennae fuscous, joint 1 paler at base; pronotum black, collar, a 

 large median spot on disk and side margins pale yellow; mesoscutum 

 blackish; scutellum pale yellow; elytra blackish with pale markings as 

 in key; membrane fuscous, paler at middle in female; legs pale yellow, 

 hind femora as in key. Pronotum without carinae, punctate as in 

 plagifer. Length, 5.4 mm. 



Known only from New York and Michigan. 



834 (1044). Xenoborus pettiti (Reuter), 1909, 50. 



Oblong-oval. Color variable, usually black with scutellum, embolium, 

 basal half of corium and cuneus more or less pale; collar and sometimes 

 the basal edge of pronotum yellow; front of head and disk of pronotum 

 sometimes reddish. Antennae dark brown or black, base of joint 1 and 

 often that of 2 yellowish; joint 1 about as long as head in front of eyes, 

 2 twice as long as 1, subequal in length to width of pronotum at base, 

 male, one-sixth shorter, female; 3 two-fifths as long as 2, 4 one-half the 

 length of 3. Pronotum with space between and in front of calli finely 

 punctate, remainder of disk coarsely so. Scutellum unevenly transversely 

 strigose and punctate. Elytra finely, closely and evenly punctate. 

 Length, 5.7 — 6.3 mm. 



