. Bulletin. Natural history; Natural history. 116 Illinois Natural History Survey Bulletin Vol. 22, Art. 1 femora reddish on apical half; membrane pale fumate, a distinct fuscous cloud occupy- ing middle of apical half. Genital claspers distinctive, fig. 134, both right and left clasp- ers composed of three prongs each. Female.—Length , width Very similar to male in pubescence and punctation, but emboliar margins more strongly arcuate; pronotum yellowish, only calli and a ray across top of coxal cleft blackish; venter reddish to brownish. Habits.—Occurs on willows {Salix nigra and S.
. Bulletin. Natural history; Natural history. 116 Illinois Natural History Survey Bulletin Vol. 22, Art. 1 femora reddish on apical half; membrane pale fumate, a distinct fuscous cloud occupy- ing middle of apical half. Genital claspers distinctive, fig. 134, both right and left clasp- ers composed of three prongs each. Female.—Length , width Very similar to male in pubescence and punctation, but emboliar margins more strongly arcuate; pronotum yellowish, only calli and a ray across top of coxal cleft blackish; venter reddish to brownish. Habits.—Occurs on willows {Salix nigra and S. amygdaloides). Evidently predacious in habits. Known Distribution.—District of Co- lumbia, Illinois, Iowa, Louisiana, Maryland, Minnesota, Mississippi, Missouri, New York, Ohio. Illinois Records.—Forty males, 49 fe- males and 1 nymph, taken May 25 to Aug. 30, are from Algonquin, Alton, Antioch, Eichorn, Galesburg, Golconda, Grand De- tour, Grand Tower, Havana, Homer Park, Kampsville, Lawrenceville, Meredosia, Me- tropolis, Monticello, Muncie, Paxton, Put- nam, Quincy, St. Joseph, Savanna, Topeka, Urbana, West Union. Ceratocapsus decurvatus Knight Ceratocapsus decurvatus Knight (1930c, p. 194). Male.—Length , width Anten- nae pale yellowish, segments three and four reddish. Dorsum punctate, clothed with prominent, nearly erect, yellowish pubes- cence intermixed on scutellum and hemely- tra with silvery, sericeous pubescence; more strongly pubescent than pumilus (Uhler), although fuscous punctures on dorsum are very similar. General color yellowish to brownish, calli and propleura dark brown; cuneus reddish, except on outer margin; legs uniformly yellowish; membrane uniformly fuscous. Genital claspers distinctive for spe- cies, fig. 134. Female.—Length , width Very similar to male in pubescence, punctation and coloration. Habits.—Predacious; collected on alder {Alnus rugosa). Known Distribution.—Illinois, Mary- land, New York, Pennsylvania. Il
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