Biology of Angoumois grain moth, Sitotroga cerealella (Olivier) (Gelechiidae: Lepidoptera) on paddy

Abstract

The angoumois grain moth, Sitotroga cerealella (Olivier) is one of the most serious pests of paddy at post-harvest level. This experiment was conducted during 2018- 2019 at Department of Agricultural Entomology, UAS, Raichur. The study revealed that the female moth lays 110 eggs on rice grains and develops through five larval instars, pupa and adult stages. The ovipositional period, incubation period, larval period and pupal period of angoumois grain moth on paddy were 2.5 ± 0.53 days, 4.1 ± 0.70 days, 24.3 ± 2.25 days and 6.3 ± 0.95 days, respectively; male and female longevity of moth were 6.1 ± 1.10 and 8.5 ± 0.85 days, respectively. The total life cycle was 41.4 ± 3.54 days. The length of male and female moth was 10.1± 0.29 and 11.2 ± 0.33 mm respectively. The morphometric measurements of all stages were measured using sterio- oriosome microscope.