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1 June 2006 Susceptibility of Pest Nezara viridula (Heteroptera: Pentatomidae) and Parasitoid Trichopoda pennipes (Diptera: Tachinidae) to Selected Insecticides
P. Glynn Tillman
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Abstract

Susceptibility of the southern green stink bug, Nezara viridula (L.) (Heteroptera: Pentatomidae), and its endoparasitoid Trichopoda pennipes (F.) (Diptera: Tachinidae) to acetamiprid, cyfluthrin, dicrotophos, indoxacarb, oxamyl, and thiamethoxam was compared in residual and oral toxicity tests. In the residual toxicity test, cyfluthrin, dicrotophos, and oxamyl were highly toxic to N. viridula. Thiamethoxam was moderately toxic to these insects. Each of the four insecticides was highly toxic to T. pennipes after prolonged tarsal contact with dried residues of these chemicals. In the oral toxicity test, where N. viridula fed on food covered with insecticide residues, none of the insecticides were toxic to adults of this stink bug, but acetamiprid, dicrotophos, and thiamethoxam were moderately toxic to the nymphs. In the oral toxicity test, where N. viridula fed on a gel-food containing insecticides, cyfluthrin, dicrotophos, oxamyl, and thiamethoxam were highly toxic to this stink bug. In an oral toxicity test using contaminated sugar water, all of the insecticides were highly toxic to T. pennipes. Because insecticides were as toxic, or more toxic, to T. pennipes than to N. viridula, it is extremely important to conserve this parasitoid by applying these insecticides for control of southern green stink bugs only when the pest reaches economic threshold.

P. Glynn Tillman "Susceptibility of Pest Nezara viridula (Heteroptera: Pentatomidae) and Parasitoid Trichopoda pennipes (Diptera: Tachinidae) to Selected Insecticides," Journal of Economic Entomology 99(3), 648-657, (1 June 2006). https://doi.org/10.1603/0022-0493-99.3.648
Received: 19 July 2005; Accepted: 1 January 2006; Published: 1 June 2006
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