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Articles 211 - 240 of 1317
Full-Text Articles in Entomology
Subterranean Termites, Erin Hodgson, Alan H. Roe
Subterranean Termites, Erin Hodgson, Alan H. Roe
All Current Publications
Subterranean termites are social insects with a caste system, and belong to the order Isoptera and family Termititae. These termites are closely related to drywood (Kalotermitidae) and dampwood (Termopsidae) termites.
Necrotic Ring Spot, Kent Evans, Jaydee Gunnell, Erin Frank
Necrotic Ring Spot, Kent Evans, Jaydee Gunnell, Erin Frank
All Current Publications
Necrotic Ring Spot (NRS) is a fungal disease that primarily affects the roots of turfgrasses. The disease occurs on turfgrasses worldwide. Many turf species can serve as host to the disease. In Utah, the disease primarily affects Kentucky and annual bluegrass turf, although it can occur on tall fescue grass as well. O
Black Grass Bugs, Erin W. Hodgson
Black Grass Bugs, Erin W. Hodgson
All Current Publications
Black grass bugs are common insects in native and introduced range grasses. These insects belong to a large and diverse family of true bugs (Hemiptera: Miridae). Many species of black grass bugs occur in the United States, including 23 Irbisia spp. and 8 Labops spp. The most common species in Utah include I. pacifica and L. hesperius. Both types of black grass bugs can have adults with fully formed wings, but shortwinged forms are also naturally occurring.
Alfalfa Stem Nematode, Kent Evans, Clark Israelsen, Mike Pace
Alfalfa Stem Nematode, Kent Evans, Clark Israelsen, Mike Pace
All Current Publications
Alfalfa Stem Nematode (ASN) is a nearly microscopic round worm that enters the alfalfa plant and lives in the stems and leaves, usually above ground. Under ideal conditions (wet weather in late winter or early spring, at 59-70°F), ASN can complete its life cycle from egg to reproducing adult in 19-23 days.
Fleas, Erin W. Hodgson, Jay B. Karren, Alan H. Roe
Fleas, Erin W. Hodgson, Jay B. Karren, Alan H. Roe
All Current Publications
Fleas transmit disease and parasitic worms, and cause allergic dermatitis to humans and animals. There are about 2,000 different flea species in the world and at least 325 species in North America, all belonging to the order Siphonaptera. Fleas are not likely to be confused with other insects because adults are flattened dorsal-ventrally, or side-to-side.
Human Lice, Erin W. Hodgson
Human Lice, Erin W. Hodgson
All Current Publications
Lice infestations on humans, called pediculosis, is very common worldwide. Lice can transmit disease and are parasitic insects on humans, pets and livestock. Lice belong to the order Phthiraptera and are generally divided into two groups based on mouthparts and feeding preferences. Chewing lice (Mallophaga) have well developed mandibles and eat skin, feathers, and fur from birds and mammals.
Russian Wheat Aphid, Erin W. Hodgson, Jay B. Karren
Russian Wheat Aphid, Erin W. Hodgson, Jay B. Karren
All Current Publications
Russian wheat aphid, Diuraphis noxia (Hemiptera: Aphididae), was first found in the U.S. in 1986, and is currently found in 16 western states (Fig. 1). In Utah, Russian wheat aphid was first detected in wheat and barley in San Juan County in 1987; now it is confirmed in every Utah county but Daggett, Piute, and Rich. Russian wheat aphids can build up to high numbers and cause significant plant damage.
Snow Mold On Turfgrass, Kent Evans, Erin Frank, Taun Beddes, Jaydee Gunnell
Snow Mold On Turfgrass, Kent Evans, Erin Frank, Taun Beddes, Jaydee Gunnell
All Current Publications
Shothole borers (Fig. 1) are bark beetles that may attack stressed or injured trees. They have a wide host range, including all fruit trees grown in Utah, quince, loquat, serviceberry, wild cherry, chokecherry, mountain ash, hawthorn and elm. In Utah, apple, cherry, pear, and hawthorn are preferred hosts.
Wheat Stripe Rust, Mike Pace, Clark Israelsen, Kent Evans, James Barnhill
Wheat Stripe Rust, Mike Pace, Clark Israelsen, Kent Evans, James Barnhill
All Current Publications
Stripe rust, or yellow rust, is primarily a foliar fungal disease of wheat, although it can infect spike and stem tissues. If the pathogen infects the spike (head) it causes extensive quality and grain yield loss. The disease is caused by the fungus Puccinia striiformis f. sp. tritici. The fungus can only survive and reproduce on wheat. It survives from one season to the next on volunteer plants.
Beneficial Insects: Beetles, Erin W. Hodgson, Ron Patterson
Beneficial Insects: Beetles, Erin W. Hodgson, Ron Patterson
All Current Publications
There are many beneficial beetles in Utah besides lady beetles or ladybugs. Beetles can significantly reduce common insect and weed problems and in some cases eliminate the need for chemical control. Examples of beneficial beetles include: ground beetles, rove beetles, tiger beetles and tortoise beetles. Many of these beetles are native to Utah, while others have been purposely introduced to help control damage from exotic insect and weed pests.
Beneficial Insects: Mantids, Erin W. Hodgson, Ron Patterson
Beneficial Insects: Mantids, Erin W. Hodgson, Ron Patterson
All Current Publications
Mantids refer to an entire predatory group of insects in the order Mantodea. The term “mantis” or “praying mantis” actually refers to a particular genus of mantids. Therefore, only some mantids belong to the genus Mantis. There are about 2,000 species of mantids worldwide and at least 20 species in the U.S. Two mantid species dominate Utah gardens: European mantid and Chinese mantid.
Beneficial Insects: True Bugs, Erin W. Hodgson, Ron Patterson
Beneficial Insects: True Bugs, Erin W. Hodgson, Ron Patterson
All Current Publications
True bugs have piercing-sucking mouthparts and belong to the order Hemiptera and suborder Heteroptera. There are more than 38,000 species of true bugs, and are most closely related to aphids, cicadas, and leaf hoppers. Although some true bugs are considered pests, about one-third are predaceous. True bugs have forewings, or hemelytra, that cross over the back at rest, but sometimes the wings are reduced.
Asparagus Beetle And Spotted Asparagus Beetle, Erin W. Hodgson, Dan Drost
Asparagus Beetle And Spotted Asparagus Beetle, Erin W. Hodgson, Dan Drost
All Current Publications
Asparagus beetle, Crioceris asparagi, and spotted asparagus beetle, C. duodecimpunctata are leaf beetles in the family Chrysomelidae. These beetles feed exclusively on asparagus and are native to Europe. Asparagus beetle is the more economically injurious of the two species.
Lygus Bug In Alfalfa Seed, Erin W. Hodgson, Mike Pace
Lygus Bug In Alfalfa Seed, Erin W. Hodgson, Mike Pace
All Current Publications
Lygus bug, Lygus lineolaris, is a true plant bug in the family Miridae (Fig. 1). Sometimes this insect is also called tarnished plant bug. Lygus bug is native to North America and is distributed throughout Mexico, United States and Canada. Western tarnished plant bug, L. herperus, is closely related to the lygus bug and has overlapping distributions in the western United States.
Cereal Leaf Beetle, Erin W. Hodgson, Edward W. Evans
Cereal Leaf Beetle, Erin W. Hodgson, Edward W. Evans
All Current Publications
Cereal leaf beetle, Oulema melanopus, is a leaf beetle in the family Chrysomelidae. These beetles are native to Europe and have been considered pests of small grains since 1737. In 1962, cereal leaf beetle was first detected in the United States in a Michigan grain field. Since the 1960s, this insect has spread throughout much of the United States and Canada; now at least 30 states have confirmed cereal leaf beetle populations.
Pear Psylla (Cacopsylla Pyricola), Diane Alston, Marion Murray
Pear Psylla (Cacopsylla Pyricola), Diane Alston, Marion Murray
All Current Publications
Pear psylla (Cacopsylla pyricola), a western Europe native, is a very small sap-feeding insect and is considered the most serious insect pest of pear in the United States. Serious infestations can stunt, defoliate, and even kill trees. Psylla feeding produces copious amounts of sticky honeydew that can cause fruit russetting.
Aphids In Alfalfa, Erin W. Hodgson
Aphids In Alfalfa, Erin W. Hodgson
All Current Publications
Aphids belong in the order Hemiptera and family Aphididae. Aphids are common insects in field and forage crops, with at least six kinds in Utah alfalfa.
Cranberry Girdler, Erin W. Hodgson, Alan H. Roe
Cranberry Girdler, Erin W. Hodgson, Alan H. Roe
All Current Publications
Cranberry girdler, Chrysoteuchia topiaria, can be found throughout the U.S., but is particularly damaging to turfgrass seed production areas in the Pacific Northwest. This insect was first detected in northern and northeastern Utah during the early 1980’s. Larvae prefer cool-season grasses, such as Kentucky bluegrass, bentgrass and fine-leaf fescues. In addition to causing significant damage to turfgrass, it is recorded as a pest of other grasses, cranberry, Douglas fir, and true firs.
Armyworm And Cutworms In Turf, Erin W. Hodgson
Armyworm And Cutworms In Turf, Erin W. Hodgson
All Current Publications
Armyworms and cutworms can be found all over the United States, with at least three species found in Utah. These insects belong to a large group of night-flying moths in the family Noctuidae. Although not new pests to turfgrass, armyworms and cutworms are often ignored, and plant health decline is confused with drought stress, fungal disease, or other insects.
Sod Webworms, Erin W. Hodgson, Alan H. Roe
Sod Webworms, Erin W. Hodgson, Alan H. Roe
All Current Publications
The term “sod webworm” refers to an insect complex of more than twenty different grass-infesting species. Adult sod webworms are pyralid moths, but are more commonly referred to as “snout moths” because their mouthparts are projected forward (Fig. 1). Sod webworms are distributed through the U.S., and at least seven different species occur in Utah (Table 1).
Yellowjackets, Hornets, And Paper Wasps, Erin Hodgson, Alan Roe
Yellowjackets, Hornets, And Paper Wasps, Erin Hodgson, Alan Roe
All Current Publications
Social wasps, including yellowjackets, hornets and paper wasps, are common stinging insects in Utah (Figs. 1, 2). The wasps are related to ants and bees, which are also capable of stinging; however, yellowjackets are the most likely to sting.
Pantry Pests, Erin W. Hodgson, Alan H. Roe
Pantry Pests, Erin W. Hodgson, Alan H. Roe
All Current Publications
Pantry pests are insects that infest whole or processed food in the home. Infestations can start out with just a few insects, but a population can quickly surge if given a proper food source and a place to reproduce. Immature and adult insects are typically brought into a home in grain-based products.
Utah Forest Health Report : A Baseline Assessment 1999 - 2001, Colleen Keyes, Paul Rogers, Leon Lamadeleine, Vick Applegate, Dave Atkins
Utah Forest Health Report : A Baseline Assessment 1999 - 2001, Colleen Keyes, Paul Rogers, Leon Lamadeleine, Vick Applegate, Dave Atkins
The Bark Beetles, Fuels, and Fire Bibliography
This report addresses forest health in two ways: by discussion of forest-related issues and by data summaries in several appendices. FHM is a long-term monitoring program and therefore, the data presented in this report must be viewed in that light. This report presents a first-time, or baseline summary. Subsequent reports will address changes over time as plots and other detection surveys are conducted and re-measured.
Springtails, Jay B. Karren, Alan H. Roe
Springtails, Jay B. Karren, Alan H. Roe
All Current Publications
Springtails are small, abundant, wingless insects of the order Collembola that live in a variety of moist habitats. Because of their small size and micro- habitat, they are seldom observed. Most of them live in the soil or in other concealed situations.
Australian Lasioglossum + Homalictus Form A Monophyletic Group: Resolving The "Australian Enigma", Bryan N. Danforth, Shuqing Ji
Australian Lasioglossum + Homalictus Form A Monophyletic Group: Resolving The "Australian Enigma", Bryan N. Danforth, Shuqing Ji
Da
No abstract provided.
Climate Change And Forest Disturbances, V. H. Dale, L. A. Joyce, S. Mcnulty, R. P. Neilson, M. P. Ayres, M. D. Flannigan, P. J. Hanson, L. C. Irland, A. E. Lugo, C. J. Peterson, D. Simberloff, F. J. Swanson, B. J. Stocks, B. M. Wotton
Climate Change And Forest Disturbances, V. H. Dale, L. A. Joyce, S. Mcnulty, R. P. Neilson, M. P. Ayres, M. D. Flannigan, P. J. Hanson, L. C. Irland, A. E. Lugo, C. J. Peterson, D. Simberloff, F. J. Swanson, B. J. Stocks, B. M. Wotton
The Bark Beetles, Fuels, and Fire Bibliography
No abstract provided.
Causes And Extent Of Declines Among Native North American Invertebrate Pollinators: Detection, Evidence, And Consequences, James H. Cane, Vincent J. Tepedino
Causes And Extent Of Declines Among Native North American Invertebrate Pollinators: Detection, Evidence, And Consequences, James H. Cane, Vincent J. Tepedino
All PIRU Publications
No abstract provided.
Habitat Fragmentation And Native Bees: A Premature Verdict?, James H. Cane
Habitat Fragmentation And Native Bees: A Premature Verdict?, James H. Cane
All PIRU Publications
No abstract provided.
Clover Mites, Dr. Jay B. Karren, Alan H. Roe
Clover Mites, Dr. Jay B. Karren, Alan H. Roe
All Current Publications
Clover mites, Bryobia praetiosa Koch, are not insects but are more closely related to chiggers, ticks, and spiders. They belong to the spider mite family Tetranychidae. These mites are found throughout the world on trees, shrubs, flowers, grasses, and agricultural crops.
Boom Sprayer Calibration For Pesticide Applications, Richard Beard, Howard M. Deer
Boom Sprayer Calibration For Pesticide Applications, Richard Beard, Howard M. Deer
All Current Publications
To protect your investment in agricultural pesticides, a boom sprayer should be calibrated at the start of the season and whenever application conditions change. Also, sprayer output should be periodically checked throughout the season to assure proper application rate. Although boom sprayers are calibrated in a variety of ways, each method utilizes the measurements of nozzle flow rate and equipment travel speed.