Biology and morphometrics of pigeonpea plume moth, E. atomosa (Wals.) on pigeonpea variety viz., Saket was studied during Kharif-2018 at the under laboratory condition RVSKVV, Gwalior (M.P.) at the room temperature 28±2oC and relative humidity 72±2 per cent from October to November. Eggs were laid in singly on the pods sometimes on flower buds and occasionally on leaves of 5-50 eggs. The finding was including incubation period was ranged from 2-3 days with an average of 2.60±0.16 days. Eggs were measured 0.44±0.01, 0.34±0.01 mm in length and width. There were five larval instars with total larval duration ranged from 15-18 days with an average of 16.70±0.40 days to enter into pupal stage. The pupal period ranged from 6-9 days with an average of 7.30±2.01 days and measured ranged from 7.90-8.30 mm, 1.65-1.85 mm with an average of 8.12±0.04, 0.1.74±0.02 mm in length and width, respectively. Total life of E. atomosa was completed ranged in 31-36 days with an average of 34.10±0.66 days. The longevity of the adult was ranged from 5-7 days with an average of 6.40±0.22 days and length and width of adult ranged from 6.60-6.85 mm with an average of 6.67±0.08 mm and 11.45-1.75 mm, 1.63±0.03 mm, respectively.

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