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A Revision Of Tomoceridae (Insecta: Collembola) In Great Smoky Mountains National Park And Southern Appalachians Using Morphological And Molecular Approaches, Kelly Lynn Felderhoff

Masters Theses

Large, heavily scaled tomocerid springtails (Collembola) are abundant in eastern forests, and are important components of the detrital food web. The genus Pogonognathellus predominates in the southern Appalachians While a number of well-delimited tomocerid species have been described, others have vague morphological boundaries and appear to be species complexes. Before this study began in 2005, four species were known to occur in Great Smoky Mountains National Park (GSMNP) and the surrounding Appalachians (P. bidentatus, dubius, elongatus, flavescens). Also occurring throughout the area is Tomocerus lamellifera, a widespread and distinctive species. The goals of this project were to …

Molecular Phylogenetic Analysis Of The Simulium Jenningsi Species-Group (Diptera: Simuliidae), Elizabeth Ann Alexander

Masters Theses

A molecular phylogenetic investigation was undertaken to identify species within the morphologically homogeneous Simulium jenningsi species group, a pestiferous group of 22 species of black flies restricted to the Nearctic region. Several species in this group have well documented medical and veterinary importance, most notably S. luggeri and S. jenningsi. Unfortunately, females are monomorphic, a conundrum given their pest status. The objective of this study was to examine the utility of molecular data in species identification, with obvious application to identification of pest females. Towards this end, we sequenced approximately 2 kilobases of sequence data from the mitochondrial (Cox …

Impact Of Imidacloprid And Horticultural Oil On Non–Target Phytophagous And Transient Canopy Insects Associated With Eastern Hemlock, Tsuga Canadensis (L.) Carrieré, In The Southern Appalachians, Carla Irene Dilling

Masters Theses

Hemlock woolly adelgid, Adelges tsugae Annand, is an exotic insect species dramatically reducing populations of eastern hemlock, Tsuga canadensis (L.) Carrieré, throughout the eastern United States. Systemic imidacloprid and horticultural oil are the two primary chemicals used to control infestations of the hemlock woolly adelgid. However, the effect of application timing (fall versus spring) and method on the translocation of imidacloprid throughout the canopy in addition to the quantity of imidacloprid translocated is unknown. Also, the potential effect of both imidacloprid and horticultural oil on non-target canopy insects is unknown. A study was initiated to determine the effect of application …

Sp341-F-Periodical Cicadas, The University Of Tennessee Agricultural Extension Service

Home Garden, Lawn, and Landscape

The periodical cicada, Magicicada species, has the longest developmental period of any insect in North America. There is probably no insect that attracts as much attention in eastern North America as does the periodical cicada. Their sudden springtime emergence, filling the air with their high-pitched, shrill-sounding songs, excites much curiosity.

Two races of the periodical cicada exist. One race has a life cycle of 13 years and is common in the southeastern United States. The other race has a life cycle of 17 years and is generally more orthern in distribution. Due to Tennessee’s location, both the 13- year and …

W127 Common Beneficial Arthropods Found In Field Crops, The University Of Tennessee Agricultural Extension Service

Field & Commercial Crops

There are hundreds of species of insects and spiders that attack arthropod pests found in cotton, corn, soybean and other field crops. A few common and representative examples are presented herein. With few exceptions, these beneficial arthropods are native and common in the southern United States. The cumulative value of insect predators and parasitoids should not be underestimated, and this publication does not address important diseases that also attack insect and mite pests. Without biological control, many pest populations would routinely reach epidemic levels in field crops. Insecticide applications typically reduce populations of beneficial insects, often resulting in secondary pest …

W127-Common Beneficial Arthropods Found In Field Crops, The University Of Tennessee Agricultural Extension Service

Insects, Pests, Plant Diseases and Weeds

There are hundreds of species of insects and spiders that attack arthropod pests found in cotton, corn, soybean and other field crops. A few common and representative examples are presented herein. With few exceptions, these beneficial arthropods are native and common in the southern United States. The cumulative value of insect predators and parasitoids should not be underestimated, and this publication does not address important diseases that also attack insect and mite pests. Without biological control, many pest populations would routinely reach epidemic levels in field crops. Insecticide applications typically reduce populations of beneficial insects, often resulting in secondary pest …

Sp290-J Cutworms In Field Corn, The University Of Tennessee Agricultural Extension Service

Field & Commercial Crops

Field corn is susceptible to damage from several species of cutworms that occur in Tennessee. Usually, this damage occurs in early planted corn when the temperatures are cool and the ground is moist. Cutworms are less likely to cause economic damage after corn reaches 2 feet in height.

Sp341-R Cereal Leaf Beetle In Tennessee, The University Of Tennessee Agricultural Extension Service

Field & Commercial Crops

The cereal leaf beetle is a serious pest of small grains in many parts of the world. The insect was first identified in the United States in 1962 in Michigan. Since then, it has migrated into the surrounding states as well as into Tennessee. The cereal leaf beetle has been reported in all 95 counties in Tennessee.