Population Dynamics of <I>Hyblaea puera</I> Cram (Lepidoptera: Hyblaeidae) and <I>Eutectona machaeralis</I> Walk. (Lepidoptera: Pyralidae) in Teak Forest of Madhya Pradesh (India)

Abstract

Teak defoliator Hyblaea puera and skeletonizer Eutectoria machaeralis are serious. Insect pests of teak in IndIa which cause severe damage to green foliage durina growth period of the trees. The seasonal abundance and fluctuation in pests population associated with the incidence of attack, was studied at three location in Barela Rance, Mandla Forest Division (Madhya Pradesh, India) during 1982 to 1986. The results of five years data on population dynamics are discussed in relation to pest status of defoliator and skeletonizer. The major active period of H. puera was July and August while least active period was observed from September onwards. Generally, the pest complete 2 to 3 overlapping generatiOns during its active period. In E. machaeralis, the highest population was recorded during September. It complete 4-5 overlapping generation during its active period from August to October.