CHAKKANI PRIYA., K.V. HARI PRASAD., DR. N.C VENKATESWARLU AND DR. V. UMAMAHESH

ABSTRACT

Snellenius maculipennis (Szepligate) is an important hymenopteran endo larval parasitoid of castor semilooper Achaea janata L. Nine insecticides (acephate 75 SP, profenophos 50 EC, novaluron 10 EC, thiodiocarb 75WP, emamectin benzoate 5 SG, lufenuron

5.4 EC, flubendiamide 480 SC, chlorantraniliprole 18.5 SC, lambda cyhalothrin 5 EC) were tested for their safety against cocoon stages of S. maculipennis under laboratory condition. Among all insecticides tested, acephate 75 SP was detrimental to S. maculipennis with least adult emergence of (26.67%) followed by profenophos 50 EC (33.33%) and thiodicarb 75 WP (33.33%). Emamectin benzoate 5 EC and flubendiamide 480 SC were highly safer to the parasitoid by recording 93.33 per cent of adult emergence. Adult longevity was short ranged between 1-1.33 days in acephate 75 SP, thiodicarb 75 WP and profenophos 50 EC treatments. Adult longevity of S. maculipennis was relatively longer in emamectin benzoate 5 EC (3.83 days) and flubendiamide 480 EC (3.67 days) treatments.

KEY WORDS: Snellenius maculipennis, Achaea janata and castor.