. Bulletin. Natural history; Natural history. 138 Illinois Natural History Survey Bulletin Vol. 22, Art. 1 from Connecticut, Maine, Massachusetts, New Jersey, New York, Nova Scotia, Que- bec, where it occurs on grasses. Capsus Fabricius KEY TO SPECIES Second antennal segment strongly clavate on apical half, thickness nearly twice that of first segment, fig. 154 ater, p. 138 Second antennal segment only moderately clavate on apical half, thickness only slightly greater than that of first seg- ment simulans, p. 138 Capsus ater (Linnaeus) Cimex ater Linnaeus (1758, p. 447). Male.—Length , wid
. Bulletin. Natural history; Natural history. 138 Illinois Natural History Survey Bulletin Vol. 22, Art. 1 from Connecticut, Maine, Massachusetts, New Jersey, New York, Nova Scotia, Que- bec, where it occurs on grasses. Capsus Fabricius KEY TO SPECIES Second antennal segment strongly clavate on apical half, thickness nearly twice that of first segment, fig. 154 ater, p. 138 Second antennal segment only moderately clavate on apical half, thickness only slightly greater than that of first seg- ment simulans, p. 138 Capsus ater (Linnaeus) Cimex ater Linnaeus (1758, p. 447). Male.—Length , width Head width , vertex Antennae, first seg- ment, length , thickness ; Fig. \S^.—Capsus ater, 9. L86, strongly clavate, greatest thickness ; third, , slender; fourth, Pro- notum, length , width at base Head and body uniformly black, moderately shin- ing; the pronotum shallowly, but rather coarsely, punctate; clothed with pale to yel- lowish pubescence. Female.—Fig. 154. Length , width Very similar to male in color, pubes- cence and punctation. The typical form of this species has black legs, variety tyrannus (Fabricius) (1794, p. 177) has yellow brown or reddish legs, and variety semiflavus (Linnaeus) (1767, p. 725) has the legs, head and pro- notum reddish. All three forms and their intergrades have been taken together in Illinois. All Illinois specimens with the red- dish head and pronotum are females. Food Plants.—Canada bluegrass {Poa compressa), couch grass {Agropyron rep- ens) ; occasionally other grasses, such as timothy {Phleiim pratense). Known Distribution.—This European species is common throughout the eastern United States and Canada. Illinois Records.—One hundred fifteen males, 67 females and 1 nymph, taken May 13 to Aug. 12, are from Algonquin, Amboy, Antioch, Aurora, Bloomington, Chicago, Des Plaines, East Dubuque, Edgebrook, Eliza- beth, Erie, Fort Sheridan, Frankfort, Free- port, Gal
Size: 1228px × 2035px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., booka, bookcentury1900, bookdecade1910, booksubjectnaturalhistory
