The toxicity of ½ and full recommended orchard dosages of 8 pesticides toHippodamia convergensGuérin-Méneville was assessed in the laboratory and the field. Endosulfan and binapacryl and the low dosage of oxythioquinox allowed 50% or greater survival of nondiapausing adults when sprayed directly upon the beetles in the laboratory. The higher dosage of oxythioquinox and both dosages of DDT allowed only 21–29% survival at 72 hours. Diazinon, carbaryl, parathion, and azinphosmethyl were highly toxic, allowing no survival after 6 hr. Essentially 100% mortality of nondiapausing adults resulted after 48-hr exposure in the laboratory to the residues of all 8 pesticides. In orchard tests, the low dosages of endosulfan, binapacryl, oxythioquinox, and DDT allowed 64% or greater survival of adults after 7 days' exposure to residues on peach foliage. Both the high and low dosages of diazinon and carbaryl were highly toxic through 7 days'. exposure but some beetles survived after exposure to 8- to 14-day-old residues. Residues of azinphosmethyl and parathion were highly toxic with no adults surviving after 7 or 14 days.Log dosage-probit curves for topical application of these pesticides with diapausing adults show a wide range of response, With LD50values from 0.005μg per beetle With azinphosmethyl to 5.5μg per beetle with binapacryl. The order of toxicity was azinphosmethyl>parathion>carbaryl>diazinon>DDT>endosulfan>binapacryl.