Tag: Entomology and Nematology Department

What to do about African Honey Bees: A Consumer Guide

Figure 1. African honey bee queens, such as one at the center of the photo, appear nearly identical to European honey bee queens. Credit: Scott Bauer, USDA/ARSThe general public can take several steps to avoid encountering honey bee swarms or colonies. The first and most important step is for citizens to educate themselves and their families about the AHB. This 3-page fact sheet provides links to valuable resources, definitions of key terms, and touches on general precautions and bee-proofing. Written by M. K. O’Malley, J. D. Ellis and A. S. Neal, and published by the UF Department of Entomology and Nematology, October 2014. (Photo: Scott Bauer, USDA/ARS)
http://edis.ifas.ufl.edu/in739

Best Management Practices for Siting Honey Bee Colonies: Good Neighbor Guidelines

Figure 1. Backyard beekeeping set-up using hives with movable frames. Beekeeper has not exceeded the number of hives on this parcel. Hives are facing the fence, which acts as a flyway barrier.Keeping honey bees requires responsible management so that the bees do not become a nuisance. Additionally, the presence of Africanized honey bees in Florida places more pressure on beekeepers to maintain their colonies properly. This 3-page fact sheet is a reference for honey bee management in Florida, with emphasis on siting apiaries in sensitive locations, in order to promote harmonious cooperation between beekeepers, neighbors, and landowners. Written by Jamie Ellis, Jerry Hayes, and published by the UF Department of Entomology and Nematology, November 2014. (Photo by Thien Gretchen (CC BY-NC-ND 2.0), via Flickr)
http://edis.ifas.ufl.edu/aa137

Frequently Asked Questions about the Africanized Honey Bee in Florida

Figure 1. An Africanized honey bee (left) and a European honey bee on honeycomb. Despite color differences between these two individuals, mostly they can't be identified by eye.The African honey bee, Apis mellifera scutellata, was introduced into South America from the central and southern part of Africa in 1957. Since its introduction into South America, the African bee has migrated into the southwestern United States and Florida. Apis mellifera scutellata is the African bee subspecies referred to in this 3-page fact sheet, which answers commonly asked questions about these bees and their behavior. Written by M. K. O’Malley, J. D. Ellis and A. S. Neal, and published by the UF Department of Entomology and Nematology, November 2014.
http://edis.ifas.ufl.edu/in738

Pest Identification Guides

Created to help growers and crop consultants, private homeowners, Master Gardeners, and the general public identify common arthropod pests and the damage they inflict, each field guide provides photos of the important life stages and crop damage associated with arthropod pests. The text highlights key general morphology and biology, distribution, and natural enemies. Written by Nicole Casuso and Hugh Smith, and published by the UF Department of Entomology and Nematology, October 2014.
http://edis.ifas.ufl.edu/topic_series_pest_identification_guides

Screening Methods for Southern Chinch Bug Resistance in St. Augustinegrass

Figure 1. Bag test.Relying on insecticides for southern chinch bug control raises turfgrass maintenance costs, increases the risk that insects will develop resistance to insecticides, and may damage the environment. Host-plant resistance is a relatively sustainable and environmentally sound option for management of this damaging insect pest.To develop new resistant varieties, plant materials must be screened for new sources of southern chinch bug resistance. Screening methods to measure host plant resistance of St. Augustinegrass to southern chinch bugs have measured nymphal and/or adult survival in so-called no-choice tests in which only the experimental plant materials were provided. There are four types of screening methods described in this 4-page fact sheet was written by Huangjun Lu and Ronald Cherry, and published by the UF Department of Entomology and Nematology, October 2014. (Photo credit: Long Ma, UF/IFAS Extension)
http://edis.ifas.ufl.edu/in1050

Gulf Coast Tick, Amblyomma maculatum Koch (Acari: Ixodidae: Amblyomminae)

Figure 1. Adult male (left) and female (right) Gulf Coast ticks, Amblyomma maculatum Koch.Gulf Coast ticks are found in grass prairies and coastal uplands throughout much of the western hemisphere. The ticks are ectoparasites that feed on a variety of birds and mammals, and will readily bite humans. Gulf Coast ticks are of increasing concern because of their ability to transmit several pathogens of veterinary and medical importance. This 7-page fact sheet was written by Jeffrey C. Hertz and Phillip E. Kaufman, and published by the UF Department of Entomology and Nematology, October 2014. (Photo: Jeffrey C. Hertz, edited by Jane Medley)
http://edis.ifas.ufl.edu/in1062

Tropilaelaps mite Tropilaelaps spp. Delfinado & Baker (Arachnida: Mesostigmata: Laelapidae)

Figure 1. Adult female Tropilaelaps.Honey bees throughout the world are exposed to numerous pests, parasites, and pathogens. One such parasite is Tropilaelaps spp. Delfinado & Baker, an ectoparasitic mite that feeds on the hemolymph of developing honey bees. Four species of Tropilaelaps have been identified and characterized. This 4-page fact sheet was written by Ashley N. Mortensen, Sarah Burleson, Gunasegaran Chelliah, Ken Johnson, Daniel R. Schmehl, and Jamie D. Ellis, and published by the UF Department of Entomology and Nematology, October 2014. (Photo credit: Pest and Diseases Image Library, Bugwood.org)
http://edis.ifas.ufl.edu/in1061

Plagas y Hongos Identificados en Olivos (Olea europea) en Florida

Figure 1. Leaffooted bug, Leptoglossus phyllopus, on an olive tree in Marion County, Florida.La producción de olivo o aceitunas (Olea europea) en Florida ha aumentado en los últimos años. La disponibilidad de árboles en los viveros de plantas ha aumentado y muchos residentes los compran para plantarlos en su patio. Afortunadamente, los olivos son una especie relativamente resistente a muchas plagas, pero en ocasiones surgen invasores que pueden causar daños significativos. Algunos patógenos también pueden infectar los olivos y causar enfermedades, reducir los rendimientos o arruinar la apariencia estética de los árboles. Siguiendo las prácticas de cultivo apropiadas para olivos podemos reducir las probabilidades de perder árboles por plagas y enfermedades. Una encuesta realizada con productores de aceitunas en Florida durante el año 2014 identificó las plagas y enfermedades descritas en este documento.

This 6-page fact sheet was written by Jennifer L. Gillett-Kaufman, Sandra A. Allan, Jonael H. Bosques-Méndez, and Lyle J. Buss; translated into Spanish by Jonael H. Bosques Méndez, and published by the UF Department of Entomology and Nematology, September 2014.
http://edis.ifas.ufl.edu/in1052

Imperial Moth Eacles imperialis imperialis (Drury, 1773) (Insecta: Lepidoptera: Saturniidae: Ceratocampinae)

Figure 1. Imperial moth, Eacles imperialis (Drury). The imperial moth is one of our largest and most beautiful moths. It is also the most variable in appearance and the most widely distributed of our large eastern U.S. saturniid moths. This 9-page fact sheet was written by Donald W. Hall, and published by the UF Department of Entomology and Nematology, September 2014.
(Photo: Donald W. Hall, University of Florida) http://edis.ifas.ufl.edu/in1051

African malaria mosquito Anopheles gambiae Giles (Insecta: Diptera: Culicidae)

Figure 1. Female Anopheles gambiae Giles taking a blood meal.Anopheles gambiae Giles is commonly called the African malaria mosquito because it is the most efficient vector of human malaria in the Afrotropical Region. They are considered to be one of the world’s most important human malaria vectors because of their susceptibility to the Plasmodium parasite, their preference for humans as a host, and their indoor-feeding behavior. Due to their short development time and their preference for developmental habitats near human dwellings, Anopheles gambiae are considered effective vectors of human malaria, as well as lymphatic filariasis (elephantiasis). This 6-page fact sheet was written by Sabrina A. White and Phillip E. Kaufman, and published by the UF Department of Entomology and Nematology, September 2014.
http://edis.ifas.ufl.edu/in1048

Integrated Pest Management for Mosquito Reduction around Homes and Neighborhoods

Cover: Integrated Pest Management for Mosquito Reduction around Homes and NeighborhoodsThis 40-page publication describes how homeowners can use an integrated pest management (IPM) program to help decrease pesticide use, reduce the risk of contracting mosquito-borne diseases, and ease the financial burden on local governments responsible for area-wide control. Modern mosquito control emphasizes source reduction to eliminate areas where mosquitoes thrive; surveillance to determine whether pesticide applications are necessary; screening; sanitation; and other techniques described in this document. The methods recommended in this publication are particularly effective in reducing mosquitoes that transmit diseases. Homeowners who take responsibility for identifying and eliminating sources of mosquito production around their homes and neighborhoods will improve health and quality of life for all Florida residents. Written by C. R. Connelly, E. Bolles, D. Culbert, J. DeValerio, M. Donahoe, K. Gabel, R. Jordi, J. McLaughlin, A. S. Neal, S. Scalera, E. Toro, and J. Walter, and published by the UF Department of Entomology and Nematology, September 2014.
http://edis.ifas.ufl.edu/in1045

Pavement ant Tetramorium caespitum (Linnaeus) (Insecta: Hymenoptera: Formicidae)

Figure 1. A) Parallel rugae (ridges) running lengthwise on head. B) Antennae with 12 segments (dots representing each segment). C) Characteristic raised ridge at the antennal insertion. D) Antennal club 3-segmented. The pavement ant is one of the most commonly encountered ants in the United States. Since first introduced from Europe at the beginning of the nineteenth century, the ant has become well established and is prevalent in urban areas in the northern U.S. and parts of Canada. However, the extent of their invasiveness and severity as a pest is not well characterized. This 5-page fact sheet was written by Tyler Vitone and Andrea Lucky, and published by the UF Department of Entomology and Nematology, September 2014.
http://edis.ifas.ufl.edu/in1047

A Parasitoid Wasp Cotesia congregata (Say) (Insecta: Hymenoptera: Braconidae

Figure 1. A group of adult Cotesia congregata (Say) wasps feeding on honey solution placed on the underside of a tomato leaf. Credit: Justin Bredlau, Virginia Commonwealth UniversityThis species of Cotesia has been widely used as a model system in insect physiology. It has also been used to examine insect learning in host-parasitoid-plant interactions. It is an important natural enemy of the tobacco hornworm, a detrimental pest species that feeds on many plants in the Solanaceae (tobacco, pepper, tomato, etc.) family. This 5-page fact sheet was written by Christopher D. Crockett, Andrea Lucky, Oscar E. Liburd, and Karen M. Kester, and published by the UF Department of Entomology and Nematology, July 2014.
http://edis.ifas.ufl.edu/in1042

Giant Woolly Bear (larva), Giant or Great Leopard Moth (adult) Hypercompe scribonia (Stoll 1790) (Lepidoptera: Erebidae: Arctiinae)

Figure 1. Giant leopard moth, Hypercompe scribonia (Stoll 1790). The giant leopard moth is our largest eastern tiger moth. It was formerly in the family Arctiidae, which now composes the subfamily Arctiinae in the family Erebidae. Giant leopard moths are nocturnal. Males are commonly attracted to lights at night. Sometimes dozens of males come to bright lights set out in good habitat. This 6-page fact sheet was written by Donald W. Hall, and published by the UF Department of Entomology and Nematology, August 2014.
http://edis.ifas.ufl.edu/in1043

Hydrellia fly parasitic wasp Trichopria columbiana Ashmead (Insecta: Hymenoptera: Diapriidae)

Figure 3. Second or third instar larva of Trichopria columbiana (Ashmead). Credit: Byron Coon, Argosy UniversityTrichopria columbiana is a parasitoid of Hydrellia fly species. Depending on the ecological role of the host species, it can have a positive or negative effect on biological control. Some Hydrellia species feed on the invasive aquatic weed hydrilla. After its introduction into the U.S. by the aquarium industry in the 1950s (Langeland 1996), various control methods, including biological control, were developed and used to manage infestations. Classical biological control studies were initiated in the 1970s, which led to the release of four insects in the U.S., two of which were the leaf-mining ephydrid flies, Hydrellia pakistanae and Hydrellia balciunasi. Despite successful establishment and range expansion of the Asian hydrilla leaf mining fly, Hydrellia pakistanae, population levels of the insect and associated plant damage have remained low. One of the potentially limiting biotic factors is parasitism by the native endoparasitic wasp Trichopria columbiana. This 6-page fact sheet was written by Byron R. Coon, Nathan E. Harms, Michael J. Grodowitz, Emma N.I. Weeks, and James P. Cuda, and published by the UF Department of Entomology and Nematology, June 2014.
http://edis.ifas.ufl.edu/in1040

Hydrilla tuber weevil Bagous affinis Hustache (Insecta: Coleoptera: Curculionidae)

Figure 1. Adults of the hydrilla tuber weevil, Bagous affinis on a tuber of Hydrilla verticillata. Credit: Gary Buckingham USDA-Agricultural Research ServiceBagous affinis Hustache is a semi-aquatic weevil that feeds on the aquatic invasive plant Hydrilla verticillata (L.f.) Royle. The larvae of the weevil mine hydrilla tubers, and the adults feed on the submerged stems and leaves. The weevil was discovered during surveys for biological control agents for hydrilla in Pakistan in 1980 and was first introduced to the U.S. in Florida from India in 1987. This 5-page fact sheet was written by Emma Weeks, and published by the UF Department of Entomology and Nematology, June 2014.
http://edis.ifas.ufl.edu/in1039

Grass Carp, the White Amur: Ctenopharyngodon idella Cuvier and Valenciennes (Actinopterygii: Cyprinidae: Squaliobarbinae)

Figure 7. Adult grass carp, Ctenopharyngodon idella Val.The grass carp, Ctenopharyngodon idella Cuvier and Valenciennes, was imported to the U.S. in 1963 as a biological control agent for hydrilla (Hydrilla verticilliata (L.f.) Royle) and other aquatic plants. Concerns of escape and reproduction, and the potential impacts that colonization of the fish could have on native flora and fauna led to research that developed a non-reproductive fish, which was equally effective in controlling hydrilla. In the warm waters of Florida, with abundant food, grass carp grow quickly at around 2 lbs/month or 0.91 kg/month and may achieve weights of 97 lbs (44 kg). Younger fish and female fish grow faster than older or male fish. Grass carp are the most effective biological control tool that has been identified for hydrilla. This 7-page fact sheet was written by Emma N.I. Weeks and Jeffrey E. Hill, and published by the UF Department of Entomology and Nematology, June 2014.
http://edis.ifas.ufl.edu/in1038

Hydrilla Stem Weevil Bagous Hydrillae O’Brien

Figure 1. Adult of the hydrilla stem weevil, Bagous hydrillae. Credit: Gary Buckingham, USDA-ARSBagous hydrillae O’Brien is a semi-aquatic weevil that feeds on the aquatic invasive weed Hydrilla verticillata (L.f.) Royle. Larvae of the weevil mine hydrilla stems and the adults feed on the stems and submerged leaves. This weevil was discovered during overseas surveys for biological control agents for hydrilla during the 1980s and was first introduced to the U.S. in Florida in 1991 after extensive host-specificity testing. This 5-page fact sheet was written by Emma Weeks, Jim Cuda, and Michael J. Grodowitz, and published by the UF Department of Entomology and Nematology, June 2014.
http://edis.ifas.ufl.edu/in1036

Hydrilla leaf mining flies (unofficial common name) Hydrellia spp. (Insecta: Diptera: Ephydridae)

http://edis.ifas.ufl.edu/in1034Figure 1. Adults of hydrilla leaf mining fly, Hydrellia spp.Several native and introduced species of flies in the genus Hydrellia are important because they feed on hydrilla (Hydrilla verticillata L.f. Royle), an invasive aquatic plant that has been classified as a Federal Noxious Weed. Hydrilla has invaded aquatic ecosystems in Florida and across the U.S. Larvae of Hydrellia spp. mine the leaves of hydrilla. In Florida, there are four species that have been associated with the invasive aquatic weed hydrilla: two native species and two species that were introduced for biological control of hydrilla. The native species are Hydrellia bilobifera Cresson and Hydrellia discursa Deonier. The introduced species are Hydrellia pakistanae Deonier and Hydrellia balciunasi Bock. This 6-page fact sheet was written by Emma Weeks and James Cuda, and published by the UF Department of Entomology and Nematology, April 2014.

Hydrilla Integrated Management

cover of bookThe focus of the book is on hydrilla management in Florida, although the described tactics are known and used in many of the 28 states in the United States with hydrilla infestations. Divided in seven chapters, the book guides the reader through a general introduction to the problems associated with hydrilla; identification of the plant; instructions for early detection of infestations including federal and state laws and regulations; detailed descriptions of available control tactics; proposals for integrated management plans; descriptions of insects and fish associated with hydrilla; and supplementary information including contacts for assistance when readers encounter infestations. This 144-page book was written by Jennifer L. Gillett-Kaufman, Verena-Ulrike Lietze, and Emma N.I. Weeks, and published by the UF Department of Entomology and Nematology, August 2014.
http://edis.ifas.ufl.edu/in1044