Effect of inhibitors on acid phosphatase activity in the haemolymph of the large milkweed bug, Oncopeltus fasciatus (Hemiptera:Lygaeidae).

1. Cyanide and azide showed increases in inhibition during the latter part of the fifth stadium after juvenile hormone (Law-Williams) application. 2. Azide showed greater inhibition in the adults than in the fifth instars except for the JH-treated fifth female which showed approximately the same amount of inhibition as the adult female.