Vol. 10, Issue 11 (2021)

Author(s):
Rashmi C, Shivaprasad M, Swamy AV, Vinay JU, Ranjitha BR and Shilpa M

Abstract:
Studies on the biology of C. punctiferalis revealed that the newly hatched larvae were sluggish in nature and they become active after sometime. The head was black and prominent big they were smooth skinned. The average larval duration had First, Second, Third, Fourth & Fifth instars with 3.10 ± 0.3, 2.75 ± 0.63, 2.75 ± 0.85, 3.40 ± 0.59 & 5.80 ± 0.69, respectively. While, pupal period lasted for 11.28 ± 0.88 days, respectively. Whereas, male and female had longevity was 5.50 ± 0.70 days and female longevity 8.10 ± 0.56 days. Female moth survived more than 2-3 days than the male. The average larval period ranged 17.80 ± 3.06 with 5 instars. Shoot and capsule borers, C. punctiferalis sexes could be easily differentiated at the pupation stage, based on the position of genital opening was found on the eight abdominal segments which was like a slit. Whereas, in male the genital opening with two raised pads found on the ninth abdominal segment. Average length and breadth of male and female pupa was15.60 ± 0.61mm, 3.39 ± 0.25mm, 17.60 ± 1.07mm and 3.39 ± 0.25mm respectively. The duration of pupal period was 9 to 11 days.