Parasitism of Hypocala andremona (Stoll) (Lepidoptera: Noctuidae) eggs on parsimmon trees by Trichogrammatids

Abstract

The study reports a field survey to determine the presence of parasitism on the leaf defoliator Hypocala andremona (Stoll) (Lepidoptera: Noctuidae) eggs, on parsimmon trees by Trichogrammatids. H. andremona eggs were sampled weekly on two branches/10 trees/orchard during the 2000/01 and 2001/02 crop seasons in Londrina, and during 2000/01 crop season in Arapongas, PR, Brazil. In laboratory the eggs were isolated in gelatin capsules and maintained under controlled conditions (26 [plus or minus] 1[degree]C, 60 [plus or minus] 10% RH, 14L:10D). Three parasitoid species were identified: Trichogrammatoidea annulata De Santis, Trichogramma pretiosum Riley and Trichogramma bruni Nagaraja. In Arapongas only T. pretiosum was collected. Natural control levels in general were low, but parasitization levels up to 50% were found during the samplings. The potential use of these biological agents to control the lepidopteran pest is discussed.