Biology of Leucinodes orbonalis Guen. on Brinjal (Solanum melongena) Crop

The present investigation was undertaken in Department of Entomology, Indira Gandhi Krishi Vishwavidalaya, Raipur (Chhattisgarh). To study the biology of the borer L. orbanalis rearing of the pest was done to obtain mass culture. The infested fruits were collected from the general crop of brinjal and were kept in glass Petri dishes (10 × 10 cm) having a layer of cut pieces of paper. The experiment was started with newly hatched first instar larvae (0–8 hours old) which were immediately fed on brinjal fruit slice. The results revealed that the eggs, larval and pupal period of shoot and fruit borer were 3.49, 11.50 and 8.00 days, respectively, the longevity of adult was 4.60 days. Total life cycle completed in 27.59 days and male to female ratio was 1:1.53.