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Key to common household ants
University of California IPM — This key includes the ant species that are most likely to be a nuisance around California homes and structures. Many other ant species occur in California, but most are not home invaders. References / Acknowledgment Work through the key until you ...More…
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Ants Management Guidelines
University of California IPM — Ants are among the most prevalent pests in households. They are also found in restaurants, hospitals, offices, warehouses, and other buildings where they can find food and water. On outdoor (and sometimes indoor) plants, ants protect and care for ...More…
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Introduction to Weeds Photo Gallery
University of California IPM — Links to photos and descriptions of common weeds of California. The UC IPM Weed Photo Gallery includes many, but not all, weed species commonly found in California farms and landscapes. Additional species will be added over time. ...More…
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Pests in Homes, Gardens, Landscapes, and Turf
University of California IPM — Information about managing pests of homes, gardens, landscapes, and turf, from UC IPM. Management methods including pesticides and biological control Identification helpers-including natural enemies and weed photo galleries UC Statewide Master ...More…
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Pavement antTetramorium caespitum
University of California IPM — Trails seen going to and from food sources, most often at night Adjacent colonies fight, producing spectacular sidewalk ant wars in the spring Mounds are built along sidewalks, baseboards, and near foundations in clusters Workers are all the ...More…
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Ant key: One node versus two
University of California IPM — Petiole with 1 node Petiole with 2 nodes UC IPM Home > Antkey > NodeMore…
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Pharaoh antMonomorium pharaonis
University of California IPM — Travel in set trails along carpets, countertops, cabinets, floors, and baseboards May use electrical wires and plumbing pipes to travel from room to room Colonies very mobile; workers, along with larvae, pupae, and even a few queens, may move to ...More…
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Red imported fire antSolenopsis invicta
University of California IPM — Workers are polymorphic (different sizes), small, 1/16- to 1/5-inch long Feed on living insects, dead animals, and honeydew from honeydew-producing insects Extremely aggressive; if disturbed, will swarm out of nests and attack in large numbers; ...More…
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Odorous house antTapinoma sessile
University of California IPM — Feed on both dead and living insects, favoring aphid and scale honeydew Trails common along branches of trees, foundations, sidewalks, baseboards, and edges of carpets When disturbed, become erratic with their abdomens raised in the air May nest ...More…
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Acknowledgments
University of California IPM — Division of Agriculture and Natural Resources Communication Services, University of California, Davis Drawings in the key adapted from Smith, M.R. 1965. House Infesting Ants of the Eastern United States: Their Recognition, Biology, and Economic ...More…
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Thief antSolenopsis molesta
University of California IPM — Thorax uneven in shape when viewed from the side with no spines Feed on grease and greasy foods, proteins, dead insects, and even dead rodents; may sometimes feed on sweets Travel in set trails inside cabinets, on walls, along baseboards, and ...More…
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References
University of California IPM — Greenberg, L., J. Klotz, and J. Kabashima. UC Statewide IPM Program. April 2001. Pest Notes: Red Imported Fire Ants. Oakland: Univ. Calif. Div. Agric. Nat. Res. Publ. 7487. Hedges, Stoy A. 1992. Field Guide for the Management of Structure ...More…