. Bulletin. Natural history; Natural history. 145 Illinois Natural History Survey Bulletin Fol. 22, Art. 1 General color dark fuscous to black with ijenae, apices of juga, median line on frons, median line and slender area along basal margin of pronotum, lateral margins and apical two-thirds of median line of scutel- lum, thoracic sternum, and lower half of abdominal venter except on genital segment, coxae, basal halves of femora, and tibiae ex- cept base and apex, pale to yellowish; cuneus pale translucent, inner half reddish, apex dark red to almost black. Female.—Length , width ; ve
. Bulletin. Natural history; Natural history. 145 Illinois Natural History Survey Bulletin Fol. 22, Art. 1 General color dark fuscous to black with ijenae, apices of juga, median line on frons, median line and slender area along basal margin of pronotum, lateral margins and apical two-thirds of median line of scutel- lum, thoracic sternum, and lower half of abdominal venter except on genital segment, coxae, basal halves of femora, and tibiae ex- cept base and apex, pale to yellowish; cuneus pale translucent, inner half reddish, apex dark red to almost black. Female.—Length , width ; very similar to male, but with dark areas smaller. General color yellowish to brownish, dark- ened with fuscous; head yellowish with bases of juga, and broad mark on frons either side of median line, black; pronotum brownish, a broad black line at either lateral margin and a black ray behind callus on either side of pale median line; hemelytra rather uniformly fusco-brownish; hind fe- mora with very dark brown bands before apices, anterior face more or less black on apical half. Food Plant.—^Black willow {Salix nigra). Known Distribution.—Illinois, Michi- gan, New York, Nova Scotia, Ontario, Pennsylvania. Illinois Records.—Eleven males and 11 females, taken June 3 to July 5, are from Champaign, Chicago, Grand Detour, Homer, Kampsville, Keithsburg, Mount Carmel, Rockford, Urbana, Warsaw, White Heath. Lygidea salicis Knight Lygidea salicis Knight (1939^, p. 22). Male.—Length , width Ros- trum pale, apex black. Antennae with first segment black, slender apex pale; second fusco-brownish, basal one-fourth black, pu- bescence rather short and recumbent; third fuscous; fourth almost black. Pronotum with disk punctate, transversely rugulose; black, collar except behind eyes, median line of disk, two blotches behind outer halves of calli, disks of calli, narrow area along basal margin, and dorsal margin, pale; ven- tral one-third of propleura pale. Scutellum pale with
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