Study on duration of instars and morphomatrics of Corcyra cephalonica (Stainton)

Developmental durations as well as morphometrics of Corcyra cephalonica larvae were carried out in the Physiology Laboratory, Department of Entomology, Assam Agricultural University, Jorhat during 2014–15. There were six larval instars of C. cephalonica, the mean body length and breadth of 1^st, 2^nd, 3^rd, 4^th, 5^th and 6^th instars larvae were found to be 0.63, 2.26, 3.23, 5.03, 13.0, 15.6 and 0.26, 0.53, 1.00, 1.46, 2.73, 3.1 mm, respectively, while the mean larval duration was 1.66, 2.66, 4.26, 5.33, 6.00 and 7.66 days computing entire larval development in 27.57 days.