A Study on Chilocorus bijugus Mulsant (Coccinellidae,Coleoptera)
- Received Date: 1996-04-25
- Available Online: 2012-03-17
Abstract: Chilocorus bijugus causes severe damage to the 2nd instar of white wax insect, Ericerus pela, in Kunming.This paper describes its morph, bionomics and control method.The ladybird beetle has only one generation a year in Ligastrum ocutissimum woods.Its mean developmental period of each egg, 1st~4th instar larva and pupa is 9.2 d, 3.8 d, 4.1d, 4.5 d, 5.8 d and 11.1d respectively.An adult lays 202~815 (mean 423) eggs in about two months.A larva of the ladybird can predate above 2000 white wax insects, while an adult can do above 10000 in its life.