Vol. 11, Issue 11 (2022)

The present study was conducted to find out biology of hadda beetle, H. vigintioctopunctata on brinjal during Rabi, 2017-18 in laboratory Department of Entomology, College of Agriculture, Swami Keshwanand Rajasthan Agricultural University, Bikaner. The hadda beetle was passes through four grub instars. The duration of first, second, third and fourth nymphal instars were 1.9 ± 0.3, 2.4 ± 0.49, 3.2 ± 0.4 and 4.2± 0.75 days, respectively and pupal duration was 4.4 ± 1.02 days. The adult male and female longevity was 27.5 ± 1.68 and 30.5±2.16 days. The pre - oviposition periods of hadda beetle was 3.1 ± 0.54 days, and fecundity of hadda beetle 69.8±19.42 days respectively.