. Bulletin. Natural history; Natural history. September, 1941 Knight: Plant Bugs, or Miridae, of Illinois 175 Anne, St. Joseph, Savanna, Seaton, Sey- mour, Shawneetown, Sparta, Springfield, Starved Rock State Park, Sun Lake, To- peka, Ullin, Urbana, Vandalia, Vienna, Virginia, Volo, Ware, Waterman, Watseka, Waukegan, West Union, Willow Springs, York, Zion. Adelphocoris lineolatus (Goeze) Alfalfa Plant Bug Cimex lineolatus Goeze (1778, p. 267). Male.—Length , width Head width , vertex Antennae, first seg- ment, length ; second, ; third, ; fourth, Pronotum,
. Bulletin. Natural history; Natural history. September, 1941 Knight: Plant Bugs, or Miridae, of Illinois 175 Anne, St. Joseph, Savanna, Seaton, Sey- mour, Shawneetown, Sparta, Springfield, Starved Rock State Park, Sun Lake, To- peka, Ullin, Urbana, Vandalia, Vienna, Virginia, Volo, Ware, Waterman, Watseka, Waukegan, West Union, Willow Springs, York, Zion. Adelphocoris lineolatus (Goeze) Alfalfa Plant Bug Cimex lineolatus Goeze (1778, p. 267). Male.—Length , width Head width , vertex Antennae, first seg- ment, length ; second, ; third, ; fourth, Pronotum, length , width at base General coloration pale yel- lowish with a tinge of brown and dusky. Scutellum with two fine, longitudinal fus- cous marks on middle; corium usually with a triangular fuscous area on apical half; a fine line along costal edge black; cuneus. Fig. 169.— Adelphocoris lineolatus. yellowish; membrane fuscous. Antennae yellowish to brown, apical half darker and usually reddish brown. Legs yellowish; fem- ora with many black dots, anterior aspect with two rows of somewhat larger spots; tibial spines black, without distinct spots at bases. Body clothed with simple, pale yellowish pubescence, legs provided with black pubescence. Female.—Fig. 169. Length , width More robust than male and usually somewhat paler in color, but otherwise very similar in form and coloration. Host Plants.—Alfalfa {Medieago sa- iiva) and sweet clover {Melilotus sp.) ; oc- curs in limited numbers on other leguminous plants; also on many other succulent, herba- ceous plants. The bugs prefer to feed on flower buds and newly formed seeds, and may prove a pest where alfalfa and sweet clover are grown for seed. Known Distribution. — A European species first recorded from North America at Cape Breton, Nova Scotia (Knight 1922a), and later from Ames, Iowa, where adults were first collected June 18, 1929. They were probably imported as eggs in seeds, as about 700 samp
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