Parasitoids of Dioryctria Spp. (Pyralidae: Lepidoptera) Coneworms in Slash Pine Seed Production Areas of North Florida
Abstract
Thirteen species of parasitic Hymenoptera and 2 species of tachinid flies were found parasitizing Dioryctria spp. coneworms in north Florida slash pine (Pinus elliottii) seed orchards. Seven new host-parasite associations were recorded. Hyssopus rhyacioniae Gahan (Hymenoptera: Eulophidae) was the most commonly collected parasite of D. amatella (Hulst), the most common coneworm attacking north Florida slash pine. Another eulophid (Pediobius n. sp.) was common and easily propagated in the laboratory on cabbage looper Trichoplusia ni (Hubner) pupae. Its value for release is questionable since it also is a hyperparasite. In limited tests, a new species of Trichogramma (Hymenoptera: Trichogrammatidae) parasitized up to 70% of the D. ebeli M & M eggs on cones placed in a seed orchard.Downloads
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