Laboratory study on biology of pulse beetle (C. chinensis ) on stored green gram revealed that insect complete one generation from late August to first week of October when average temperature and relative humidity was 32.26 to 24.87o C and 89.19 to 75.16 per cent, respectively. The incubation period, larval and pupal period and total developmental period of C. chinensis was varied from 3 to 6 days, 21-26 days and 31 to 42 days, respectively. The adult duration was 6 to 11 days where male lived longer than female. Pre oviposition, oviposition and post oviposition period was zero to one day, 6 to 8 days and 1 to 2 days, respectively. Total number of egg laid by five female was 525 with an average of 105 eggs per female. Sex ratio of male to female was 1: 1.27. The hatching percentage was 92 per cent. The multiplication rate from 5 pair of insect was 435 with an average of 87 from a single pair at the end of generation.

Pulse beetle, Green gram, Callosobruchus chinensis, biology.

The current research paves the way to provide awareness to the farmers about the nature and extent of damage caused by the pulse beetle in stored green gram. For management purpose it is essential to know about the biology of pest and the studies on biology of pulse beetle, Callosobruchus chinensis L. will help in adopting proper control measures against this pest.

Sangita Limma, S.P.N. Singh and M.K. Singh (2022). Biology of Pulse Beetle (Callosbruchus chinensis) on Green Gram Under Laboratory Condition. Biological Forum – An International Journal, 14(1): 914-918.