Life cycle and morphometrics of leaf roller, Haritalodes derogata (Fabricius) on cotton in Surat, Gujarat, India

Abstract

The life cycle and morphometrics of cotton leaf roller, Haritalodes derogata (F.) (Lepidoptera, Pyralidae) study revealed that the average duration of eggs, larvae, male pupae, female pupae, male adult and female adult moths varied from 3.84 ± 0.99, 15.40 ± 1.63, 7.32 ± 0.69, 7.88 ± 0.97, 9.32 ± 0.75 and 10.40 ± 0.82 days, respectively. Pre-oviposition and post-oviposition periods were 3.36 ± 0.70 and 2.40 ± 0.65 days, respectively and the fecundity was 265.40 ± 42.55 eggs, within oviposition periods of 3.56 ± 0.58 days. The total life span for male and female was 37.40 ± 2.06 and 39.68 ± 2.36 days, respectively. The length and breadth of egg measured 0.54 ± 0.03 and 0.47 ± 0.02mm, of full-grown larvae was 27.78 ± 1.18mm and of male and female pupae were 11.95 ± 0.78 and 4.19 ± 0.14 and 13.34 ± 0.49mm and 4.38 ± 0.11 mm, respectively. The length and breadth with wings expanded of male was 11.48 ± 0.70 and 22.27 ± 0.67mm, while that of female moth was 13.79 ± 0.53 and 28.12 ± 1.42mm, respectively.