Biology of sapota midrib folder, Banisia myrsusalis elearalis Walker (Thyrididae: Lepidoptera) infesting sapota under hill zone of Karnataka

RAVULAPENTA SATHISH, D JEMLA NAIK, KUNDATY DEEPIKA

Abstract


Biology and morphometrics of sapota midrib folder, Banisia myrsusalis elearalis Walker, which has been recorded for the first time under hill zone of Karnataka, were studied at College of Horticulture, Mudigere, under laboratory conditions (16.5 0 C to 23.5 C, 72.06 % to 77.2 % RH). The incubation period of egg was 5.23 – 0.59 days. There were four distinct larval instars and duration of each instar was 6.75 – 0.78, 4.10 – 0.91, 3.70 – 0.47 and 5.15 – 0.81 days, respectively. The length and breadth of first instar larva was 0.62 – 0.01 mm and 0.40 – 0.02 mm and that of fourth instar larvae were 14.49 – 1.44 mm and 2.48 – 0.38 mm, respectively. The fecundity of adult female moth was 39.58 – 10.75 eggs with an oviposition period of 2.75 – 0.82 days. The adult male and female moths had longevity of 5.5 – 0.62 and 6.85 – 0.91 days, respectively. Total life cycle of male and female was completed in 40.8 – 3.97 and 45.35 – 4.08 days, respectively.


Keywords


Banisia myrsusalis elearalis; biology; Sapota

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