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Full-Text Articles in Entomology
Poplar Bud Gall Mite, Marion Murray, Ryan Davis
Poplar Bud Gall Mite, Marion Murray, Ryan Davis
All Current Publications
The poplar bud gall mite belongs to the eriophyid mite family. These mites are microscopic and about one-fourth the size of a spider mite. Adults are about 0.2 mm in length, reddish, and spindle-shaped. This fact sheet reviews poplar bud gall mite biology and habits, damage, and control.
Red Firebug, Kate V. Richardson, Erin Hodgson
Red Firebug, Kate V. Richardson, Erin Hodgson
All Current Publications
Red firebugs, Pyrrhocoris apterus (Heteroptera: Pyrrhocoridae), are true bugs with vibrant red body and wing coloration. These insects are native to central Europe, but are also found in western Siberia, southwestern Mongolia, India and northwestern China. This fact sheet describes red firebug, host plants, nuisance behavior, and management.
Poplar Borer, Marion Murray, Ryan Davis
Poplar Borer, Marion Murray, Ryan Davis
All Current Publications
The poplar borer is the most commonly submitted wood borer found in aspens and other poplars in Utah. While large trees are seldom killed by this pest, it can cause the decline of trees, weakening of branches or the bole (which promotes wind breakage), and allows the introduction of pathogens. This fact sheet describes poplar borer life cycle, damage, and control.
Boxelder Leafroller, Marion Murray, Ryan Davis
Boxelder Leafroller, Marion Murray, Ryan Davis
All Current Publications
The boxelder leafroller, Archips negundana, is a pest of boxelder and other trees and shrubs in parts of the United States and Canada and is commonly found in Utah. Boxelder is the primary host, but damage can also occur on raspberry, birch, elderberry, white elm, and various shrubs.This fact sheet provides information on the boxelder leafroller's life cycle, symptoms of damage, and control methods.
Carpenterworm, Dr. Jay B. Karren, Alan H. Roe, Ryan Davis
Carpenterworm, Dr. Jay B. Karren, Alan H. Roe, Ryan Davis
All Current Publications
The larval stage of the carpenterworm, Prionoxystus robiniae is a wood-boring insect that affects various ornamental trees. Unlike most other wood-boring pests of ornamentals, which are mostly beetle larvae, the carpenterworm is a caterpillar belonging to the moth family Cossidae.
Emerald Ash Borer (Agrilus Planipennis [Fairmaire]), Emily A. Parent, Lori R. Spears, Ryan S. Davis, Ricardo Ramirez
Emerald Ash Borer (Agrilus Planipennis [Fairmaire]), Emily A. Parent, Lori R. Spears, Ryan S. Davis, Ricardo Ramirez
All Current Publications
Emerald ash borer (Order: Coleoptera: Family Buprestidae) (EAB) is an invasive wood-boring insect that infects the true ash species (Fraxinus spp.). EAB is native to parts of China, Korea, Japan, Taiwan, and small areas of Russia and Mongolia. EAB was first discovered in North America in June 2002 near Detroit, Michigan, and Windsor, Ontario, Canada, and is thought to have arrived to North America via infested wood packing material. EAB is generally established in an area for several years before it is detected and can spread over large areas through active flight and human-mediated dispersal.
Billbugs In Turfgrass (Sphenophorus Spp.), Desiree Wickwar, Ricardo Ramirez
Billbugs In Turfgrass (Sphenophorus Spp.), Desiree Wickwar, Ricardo Ramirez
All Current Publications
Billbugs are weevils, a type of beetle, in the genus Sphenophorus. At least 10 billbug species are known pests of turfgrass and can be found in both warm and cool season turfgrasses throughout the United States. Though billbug adults do feed on the leaves of turfgrasses, it is the larvae that cause visible damage. Larvae feed within the stems and on roots of grasses, leading to the development of yellow or brown patches, with the potential to escalate into large patches of dead turfgrass. Billbug management in turfgrass presents a number of unique challenges, but early monitoring and informed integration …
Gambel Oak Care, Shawn Olsen, Debbie Amundsen, Shital Poudyal
Gambel Oak Care, Shawn Olsen, Debbie Amundsen, Shital Poudyal
All Current Publications
Gambel oak is commonly called scrub oak, but other common names are Rocky Mountain white oak and Utah white oak. The scientific name is Quercus gambelii, after William Gambel, an American naturalist. This fact sheet reviews Gambel oak's usability in the landscape, its care, growth requirements, diseases and pests, and maintenance.
Fire Blight In Utah: An Annual Management Guide, Marion Murray
Fire Blight In Utah: An Annual Management Guide, Marion Murray
All Current Publications
Fire blight is a serious disease of apple and pear trees. Because this disease spreads rapidly and symptoms are not visible until two weeks after infection, it can catch growers off-guard. Having a well-executed and integrated year-round management program can reduce losses from fire blight.
Wireworms, Ryan Davis, Jay B. Karren, Alan H. Roe
Wireworms, Ryan Davis, Jay B. Karren, Alan H. Roe
All Current Publications
Wireworms are the larvae (immatures) of click beetles. Adults are elongate, slender, hardshelled beetles that take their name from their habit of flipping into the air (sometimes with an audible clicking sound) when they are placed on their backs. This fact sheet reviews the management of wireworms.
Alfalfa Weevil In Utah, Kaitlin Rim, Joseph Clarine, Steven Price, Ricardo Ramirez
Alfalfa Weevil In Utah, Kaitlin Rim, Joseph Clarine, Steven Price, Ricardo Ramirez
All Current Publications
The alfalfa weevil is a major pest throughout Utah. It is a beetle with one generation per year. Eggs hatch in the spring, and the grub-like immature weevils (larvae) feed by chewing on the alfalfa foliage. In high numbers, alfalfa weevils can cause severe damage to Utah alfalfa. In any given year, however, the weevils are few enough in number in many fields to cause only minor damage. Monitor larval populations in early spring using sweep net or stem count methods. Insecticide resistance can be reduced by spraying only when needed, properly timing sprays, and rotating between modes of action.
Plagas Frutales: Durazno Y Nectarine, Marion Murray, Diane G. Alston
Plagas Frutales: Durazno Y Nectarine, Marion Murray, Diane G. Alston
All Current Publications
El tiro de munición es una enfermedad de hongos común en Utah. Ataca capullos latentes de hojas, brotes de flores, hojas, frutos y ramitas. Las primeras lesiones visibles ocurren en las hojas jóvenes como pequeñas manchas redondas y bronceadas que con el tiempo se caen, dejando agujeros redondos. Las lesiones circulares se desarollan en la fruta que primero aparecen como manchas rojizas (mostradas a la derecha, arriba), y más tarde como protuberancias ásperas y taponadas.
Plagas Frutales: Pera, Marion Murray, Diane G. Alston
Plagas Frutales: Pera, Marion Murray, Diane G. Alston
All Current Publications
El fuego bacteriano es causado por una bacteria llamada Erwinia amylovora. Las peras son muy susceptibles al fuego bacteriano. Flores, ramitas terminales, y a veces ramas enteras o árboles mueren. Las condiciones ambientales que favorecen la infección son los días lluviosos calientes durante la floración. La lluvia, el rocío fuerte, y los insectos propagan las bacterias exudadas a las flores, donde las nuevas infecciones se producen
Plagas Frutales: Cereza, Marion Murray, Diane G. Alston
Plagas Frutales: Cereza, Marion Murray, Diane G. Alston
All Current Publications
El tiro de munición ataca capullos latentes de hojas, brotes de flores, hojas, frutos y ramitas (las infecciones de frutas son menos comunes en la cereza). Las primeras lesiones visibles ocurren en las hojas jóvenes como pequeñas manchas redondas y moradas. Eventualmente estas infecciones se caen, dejando agujeros redondos dando el nombre a esta enfermedad.
Polilla De La Manzana, Marion Murray, Diane G. Alston, Michael Reding
Polilla De La Manzana, Marion Murray, Diane G. Alston, Michael Reding
All Current Publications
Polilla de la manzana (Orden Lepidoptera, familia Tortricidae) es la plaga más grave de la manzana y la pera en todo el mundo (Fig. 1). En la mayoría de las regiones productoras de las frutas más comerciales y en los patios de casas en Utah, la fruta debe ser protegida para cosechar un cultivo.
Plagas Frutales: Albaricoque, Marion Murray, Diane G. Alston
Plagas Frutales: Albaricoque, Marion Murray, Diane G. Alston
All Current Publications
El tiro de munición es una enfermedad de hongos común en Utah. Ataca capullos latentes de hojas, brotes de flores, hojas, frutos y ramitas. Las lesiones visibles ocurren primero en las hojas jóvenes como pequeñas manchas redondas y bronceadas que con el tiempo se caen, dejando agujeros redondos.
Plagas Frutales: Manzana, Marion Murray, Diane G. Alston
Plagas Frutales: Manzana, Marion Murray, Diane G. Alston
All Current Publications
El fuego bacteriano es causado por una bacteria llamada Erwinia amylovora. Algunas variedades de manzanas son muy susceptibles a esta enfermedad, como Jonathan, Jonagold y Gala. Flores, ramitas terminales, y a veces ramas enteras o árboles mueren.
Plagas Frutales: Ciruela, Marion Murray, Diane G. Alston
Plagas Frutales: Ciruela, Marion Murray, Diane G. Alston
All Current Publications
Causada por un organismo parecido a un hongo de suelo (Phytophthora), ésta enfermedad se produce en todo el mundo en casi todos los árboles frutales. Phytophthora está presente en la mayoría de los suelos, pero sólo causa infección en circunstancias óptimas, las cuáles son alta humedad del suelo o agua estancada, y un huésped susceptible.
Using Degree Days To Time Treatments For Insect Pests, Marion Murray
Using Degree Days To Time Treatments For Insect Pests, Marion Murray
All Current Publications
Insecticides that are applied for a perennial insect pest based on a calendar date often result in poor insect control and a waste of resources. Insect activity varies from year to year depending on weather. For example, in Logan, Utah, eggs of the apple pest codling moth began hatching on May 15 in 2005, May 5 in 2006, and April 30 in 2007.
Soft Scales In Utah, Marion Murray, Erin W. Hodgson
Soft Scales In Utah, Marion Murray, Erin W. Hodgson
All Current Publications
Soft scales are insects in the family Coccidae and are closely related to armored and felt scales and mealybugs. Scales are fluid feeders with piercingsucking mouthparts that remove plant phloem or sap. Most life stages are immobile because they anchor their mouthparts into host tissue. They are difficult to control because of their waxy covering, seasonal abundance, and high fecundity.
Cankerworms, Marion Murray, Erin W. Hodgson
Cankerworms, Marion Murray, Erin W. Hodgson
All Current Publications
Cankerworms, also known as inchworms, are in the order Lepidoptera and family Geometridae. Geometrid moth adults have slender bodies and relatively large, broad forewings (Figs. 1, 3). Both fall, Alsophila pometaria, and spring, Paleacrita vernata, cankerworms occur in Utah, with the fall cankerworm being most common.
Community-Wide Grasshopper Control, Marion Murray
Community-Wide Grasshopper Control, Marion Murray
All Current Publications
Springtime, while grasshoppers are still nymphs, is the best time for communities or neighborhoods to work together to suppress grasshopper populations. Treating as wide an area as possible is the key to success. When grasshoppers become adults, they can travel great distances and may not remain in one area long enough for an insecticide to be effective.
Codling Moth In Utah Orchards, Marion Murray, Diane G. Alston
Codling Moth In Utah Orchards, Marion Murray, Diane G. Alston
All Current Publications
Codling moth (Order Lepidoptera, Family Tortricidae) is the most serious pest of apple and pear worldwide. In most commercial fruit producing regions and home yards in Utah, fruit must be protected to harvest a crop. Insecticides are the main control tactic. There are new insecticides available, many of which are less toxic to humans and beneficial insects and mites than earlier insecticides. For commercial orchards with more than 10 acres of contiguous apple and pear plantings, pheromone-based mating disruption can greatly reduce codling moth populations to allow reduced insecticide use.
The Backyard Orchardist – Fruit Pests: Cherry, Marion Murray, Diane G. Alston
The Backyard Orchardist – Fruit Pests: Cherry, Marion Murray, Diane G. Alston
All Current Publications
This fact sheet describes diseases and insect pests of cherry in order of importance. Shothole attacks dormant leaf buds, blossom buds, leaves, fruit, and twigs (fruit infections are less common on cherry. Other diseases described are crown rot and root rot, gummosis, perennial canker, and powdery mildew, Insects include western cherry fruit fly, spider mites, black cherry aphids, flathead borers, pear sawfly, and speckled green fruitworm.
The Backyard Orchardist –Fruit Pests: Apricot, Marion Murray, Diane G. Alston
The Backyard Orchardist –Fruit Pests: Apricot, Marion Murray, Diane G. Alston
All Current Publications
This fact sheet describes diseases and insect pests of apricots in order of importance. Shothole is a common fungal disease in Utah. It attacks dormant leaf buds, blossom buds, leaves, fruit, and twigs. Other diseases discussed include gummosis, and perennial canker. Insect pests include greater peachtree (crown) borer, peach twig borer, spider mites, earwigs, European fruit lecanium scale, and European paper wasp, yellow jackets.
The Backyard Orchardist – Fruit Pests: Peach And Nectarine, Marion Murray, Diane G. Alston
The Backyard Orchardist – Fruit Pests: Peach And Nectarine, Marion Murray, Diane G. Alston
All Current Publications
Shothole is a common fungal disease in Utah. It attacks dormant leaf buds, blossom buds, leaves, fruit, and twigs. The first visible lesions occur on young leaves as small, round, tan spots that eventually fall out, leaving round holes.
Codling Moth Mating Disruption, Marion Murray, Diane G. Alston
Codling Moth Mating Disruption, Marion Murray, Diane G. Alston
All Current Publications
Mating disruption became commercially available in the early 1990s, and was adopted by many Utah growers about a decade later. Use of this pest management technology can be daunting due to high up-front costs and monitoring requirements; however, after two to three seasons of use, the cost of mating disruption is the same or even less than conventional pest management.
The Backyard Orchardist – Fruit Pests: Pear, Marion Murray, Diane G. Alston
The Backyard Orchardist – Fruit Pests: Pear, Marion Murray, Diane G. Alston
All Current Publications
Fire blight is caused by a bacterium called Erwinia amylovora. Pears are very susceptible to fire blight. Blossoms, terminal twigs, and sometimes entire limbs or trees are killed. Environmental conditions favoring infection are warm, rainy days during bloom.
The Backyard Orchardist – Fruit Pests: Apple, Marion Murray, Diane G. Alston
The Backyard Orchardist – Fruit Pests: Apple, Marion Murray, Diane G. Alston
All Current Publications
Fire blight is caused by a bacteria called Erwinia amylovora. Some varieties of apples are very susceptible to this disease, such as Jonathan, Jonagold, and Gala. Blossoms, terminal twigs, and sometimes entire limbs or trees are killed.
Peach Twig Borer Mating Disruption, Marion Murray, Diane G. Alston
Peach Twig Borer Mating Disruption, Marion Murray, Diane G. Alston
All Current Publications
Mating disruption became commercially available in the early 1990s, and was adopted by many Utah growers about a decade later. Use of this pest management technology can be daunting due to high up-front costs and monitoring requirements; however, after two to three seasons of use, the cost of mating disruption is the same or even less than conventional pest management.