A. MANEESHA*, S.R. KOTESWARA RAO, T. MURALI KRISHNA AND P. SUDHAKAR

Department of Entomology, S.V. Agricultural College, ANGRAU, Tirupati-517 502, Chittoor Dt., A.P.

ABSTRACT

A lab experiment was conducted during 2017 at Insectary, Department of Entomology, S.V. Agricultural College, Tirupati to study the biology of Cryptolaemus montrouzieri on different life stages of papaya mealybug, Paracoccus marginatus. The results revealed that the developmental period of C. montrouzieri was significantly maximum (40.80 days) when reared on ovisacs of papaya mealybug followed by on 1st instar nymph (36.20 days), 2nd instar nymph (33.80) and was minimum when fed on 3rd instar nymphs (28.20 days) of papaya mealybug.

KEYWORDS:

Cryptolaemus montrouzieri, Paracoccus marginatus, total developmental period.