Sterilization of solanaceous hadda, Epilachna vigintioctopunctata F. by irradiating pupae using gamma radiation.

Sterility in males and females was observed in the resulting adults when 3--4-day-old pupae of solanaceous hadda, Epilachna vigintioctopunctata F. were exposed to gamma radiation doses of 2000 rad and 2500 rad. However, at 2500 rad longevity of treated insects was adversely affected.