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Parasitism of Stem Borers (Lepidoptera: Pyralidae) Associated with Corn and Sorghum in the Lower Rio Grande Valley of Texas

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Abstract:

[Studies were done during 1982-1985 to describe the parasitism of stem borers attacking corn (Zea mays L.) and sweet, forage, and grain sorghums (Sorghum bicolor (L.) Moench) in the Lower Rio Grande Valley of Texas. Stem borers studied included Diatraea Lineolata Walker, Eoreuma (=Acigona) loftini (Dyar), D. saccharalis F., and Elasmopalpus Lignosellus (Zeller). Ten species of parasites were reared from one or more of these stem borers including egg parasite Trichogramma sp. (Hymenoptera: Trichogrammatidae); larval parasites Bracon sp., Orgilus sp., Orgilus gelechiaevorus (Cushman), Cotesia (=Apanteles) ftavipes (Cameron), Iphiaulax sp., Allorhogas pyralophagus Marsh, Chelonus sonorensis (Cameron), and Rhygoplitis aciculatus (Ashmead); and larval-pupal parasite Archytas marmoratus (Townsend). The gregarious larval parasite C. ftavipes attacked D. saccharalis more frequently than other borers on corn and sorghum, and parasitism of all stem borers was generally very low and ineffective for control.

Document Type: Research Article

Publication date: February 1, 1990

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  • Journal of Economic Entomology is published bimonthly in February, April, June, August, October, and December. The journal publishes articles on the economic significance of insects and is divided into the following sections: apiculture & social insects; arthropods in relation to plant disease; forum; insecticide resistance and resistance management; ecotoxicology; biological and microbial control; ecology and behavior; sampling and biostatistics; household and structural insects; medical entomology; molecular entomology; veterinary entomology; forest entomology; horticultural entomology; field and forage crops, and small grains; stored-product; commodity treatment and quarantine entomology; and plant resistance. In addition to research papers, Journal of Economic Entomology publishes Letters to the Editor, interpretive articles in a Forum section, Short Communications, Rapid Communications, and Book Reviews.
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