Abstract :
The seasonal incidence and life cycle of Sapota seed borer, Trymalitis margarias Meyrick was determined in the present study in field and laboratory, respectively. The seasonal in sapota seed borer, Trymalitis margarias Meyrick revealed that the larval population fluctuated throughout the year with two peak period of infestation i.e., October in 2007-08 and November in 2008-09, respectively. The biology of T. margarias indicated that the female moth laid 161.8±77.236 eggs. The average pre-oviposition, oviposition and post-oviposition period lasted for 1.83±0.185, 1.44±0.373 and 1.61±0.443 days, respectively. The duration of egg, larval and pupal stages lasted for an average of 11.16±0.715, 12.33±0.832 and 13.15±1.663 days, respectively. The adult male and female survived for a period of 4.125±0.690 and 4.865±0.971 days, respectively. The total life cycle from egg laying to adult emergence complete in 38.50±3.117 days.
Keywords :
sapota seed borer , T. margarias , seasonal incidence , biology.
