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Biological Attributes and Morphometries of Coccinella septempunctata (Linnaeus) (Coeeinellidae: Coleoptera) Rai M.K., Ramamurthy V.V., Singh P.K.* Division of Entomology, I.A.R.I. New Delhi 110 012. * Department of Agril. Zoology & Entomology, R.B.S. College, Biehpuri, Agra 283 105, India. Abstract Investigations on the biological attributes of the coccinellid predator Coeeinella septempunetata associated with rice agro-ecosystems revealed that its pre-oviposition period was 7.52±0.34 days and the fecundity 661.49±13.33 eggs/female when reared at 27°C and 70–80% relative humidity. Mean egg period ranged between 1.76±O.l6 days. The developmental period of I, II, III and IV instar was 1.6±0.15, 1.4±O.11, 1.96±O.l2 and 2.68±0.l6 days, respectively. The average pupal period was observed to be 7.52±0.34 days. The measurement of eggs, different instars of larvae, pupae and adults taken were analysed and the different stages illustrated. Top Key words Bionomics, Coeeinella septempunetata, Morphometries. Top | | |
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