Entomology Commons^™

Sod Webworm (Lepidoptera: Pyralidae: Crambinae) Moths Collected In Light Traps, Elvis A. Heinrichs, Ellis Matheny

Department of Entomology: Faculty Publications

Thirteen species of sod webworm moths were collected during 1968. Distinct differences in fijght dates occurred among the species. Trap data indicated that seven species were univoltine while six were most likely multivoltine.

Sod webworm species collected as adults in light traps from May to October: Pediasia trisecta, P mutabilis, Chrysoteuchia topiaria, Agriphila vulgivagella, A. ruricolella, Microcrambus elegans, Argyria nivalis, Crambus alboclavellus, C. praefectellus, C. laquetellus, C. leachellus, C. satrapellus

The Response Of Kentucky Bluegrass Turf To Insecticidal Treatments, E. A. Heinrichs, Leonard C. Lehman, Lloyd M. Callahan, C. J. Southards, Ellis L. Matheny

Department of Entomology: Faculty Publications

The most common insect pests of Kentucky bluegrass (Poa pratensis L.) in Tennessee are sod webworms and white grubs. Attempts to control these insects with insecticides has, at times, resulted in the entire destruction of the lawn by sod webworms. Pass (1965) has shown that applications of aldrin, chlordane, and dieldrin increased the webworm population 2-3 fold. Streu and Vasvary (1966) found the same phenomenon in chinch bug control. Both Pass and Streu believed that this population increase of the target pest may have been related to an interference in some population-limiting mechanism, such as the natural enemies, but …

Susceptibility Of The Sod Webworm Pediasia Trisecta To Biological Control Agents, E. A. Heinrichs, C. J. Southards

Department of Entomology: Faculty Publications

Homeowners in Tennessee have observed complete destruction of their lawns by the sod webworm a few months after applying an insecticide to control sod webworms or white grubs. The reason for this increase rather than a decrease in the webworm population is not perfectly understood. We believe, however, that the natural enemies of the webworm may be reduced to such low population levels that they exert very little control on the webworm. Thus, once the natural enemies are destroyed in a lawn, it may require several months or even years for them to increase to a population level necessary to …

Seasonal Abundance And Distribution Of Benthic Fauna Within A Pond, Ellis L. Matheny, E. A. Heinrichs

Department of Entomology: Faculty Publications

A Tennessee pond was sampled weekly from June 18 to August 20, 1968, to determine quantitative differences among benthic organisms in sampling depths and dates. Annelids (Oligochaeta), Chironomidae larvae, and Chaoboridae larvae were the dominant organisms collected. Preferred depths existed for each group of organisms. Chaoboridae and Chironomidae exhibited distinct seasonal variations in numbers, with the population decreasing throughout the summer. Chaoboridae were the most and Chironomidae the least numerous of the 3 groups.