Study on life cycle parameters of Stethorus aptus (Kapur) (Coleoptera: Coccinellidae): A new predator of tea Red spider mite Oligonychus coffeae (Nietner) (Tetranychidae).

Archita Barua; Dr.Azariah Babu; Dr. Ratul Ch Rajkhowa

Volume : II, Issue : XII, December - 2013

Study on life cycle parameters of Stethorus aptus (Kapur) (Coleoptera: Coccinellidae): A new predator of tea Red spider mite Oligonychus coffeae (Nietner) (Tetranychidae).

Archita Barua, Dr. Azariah Babu , Dr. Ratul Ch Rajkhowa

Abstract :

A survey was carried out to find out the natural enemies of red spider mite in the tea gardens of Jorhat region of Assam. During the survey, a new predatory beetle was recorded and has been identified as Stethorus aptus (Kapur). Life cycle parameters such as incubation period, duration of development, longevity, fecundity of S. aptus was carried out under laboratory condition. The incubation period of the egg ranged from 8 to 10 days and larval developmental period vary from 2 to 4 days. The total development period from egg to adult was completed in 28 to 30 days. The longevity of the female is more than the male and a mature female laid minimum 4 and maximum 12 eggs/day.