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Red Imported Fire Ant

 

Solenopsis invicta Buren (Hymenoptera: Formicidae)

 

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       The Red Imported Fire Ant is a serious economic pest in the southeastern United States. It originates in lowlands of South America, mainly Brazil and Argentina.  Since its invasion of southern California in 1984, periodic outbreaks have occurred in several counties.  State-wide eradication efforts started in 1999 but ended in 2003.  However, Vector Control Districts continue eradication efforts.

 

       The sting of a single Fire Ant can be painful  and  field workers are especially vulnerable.  Young livestock and poultry are also attacked and wildlife is disturbed. Foraging ants may clog irrigation lines and short-circuit electrical systems.  Quarantine procedures add to the cost of commercial nurseries.

 

       Fire ants arrived in California with honeybees from Texas in 1997 and infested almond orchards in Kern and Fresno counties.  In 1998 fire ants were detected in an area covering at least 50 square miles of Orange County, leading to a quarantine of the entire county.  Dr. Mark Hoddle reports that other outbreaks have subsequently been discovered in western Riverside county (especially the Coachella Valley), and the counties of Los Angeles, San Diego, Santa Barbara, and Sacramento.  Additional infested almond orchards have been found in Madera, Merced, and Stanislaus counties.  Some of these infestations may have been present for 10 years before they were officially detected.  The ants confine their activity to irrigated areas and have not been found in dry land areas.

 

       Poison baits have been used to reduce local colonies of fire ants, but they must be continuously applied and are expensive.  These baits that were developed specifically for the fire ant also are effective against the Argentine ant, that invades dwellings.  Applications applied at ground level around the periphery of a structure will remain effective for a month or more.  Biological control studies have been made for natural enemies of the fire ant in South America, but there has been no success in finding effective candidates for importation.

 

REFERENCES:

 

Adams, C. T., J. K. Plumley, C. S. Lofgren, & W. A. Banks.  1976.  “Economic Importance of the red imported fire ant, Solenopsis invicta Buren. I. Preliminary investigations of impact on soybean harvest”.  Journal of the Georgia Entomo­logical Society 11:  165–169.

 

Adams, C. T., J. K. Plumley, W. A. Banks, & C. S. Lofgren.  1977.  Impact of red imported fire ant, Solenopsis invicta Buren (Hymenoptera: Formicidae) on harvest of soybean in North Carolina.  Journal of the Elisha Mitchell Society 93:  150–152.

 

Banks, W. A. C. T. Adams, C. S. Lofgren, & D. P. Wojcik.  1990.  Imported fire ant infestation of soybean fields in the southern United States.  Florida Entomologist 73: 503–504.

 

Bolton, B.  1995.  A new general catalogue of the ants of the world. Cambridge, Mass.:  Harvard University Press, 504 pp.

 

Bolton, B.  2016.  Bolton World Catalog Ants. Available online: http://www.antweb.org/world.jsp..

 

Buren, W. F.  1972.  Revisionary studies on the taxonomy of the imported fire ants.  Journal of the Georgia Entomological Society  7:  1-26.

Cohen, P. R.  1992.  Imported fire ant stings: clinical manifes­tations and treatment.  Pediatric Dermatology  9:  44–48.

 

Diffie, S. &  C. Sheppard.  1990.  Impact of imported fire ants on Georgia Homeowners.   In: 1990 Imported Fire Ant Conference (M. E. Mispagel, editor) pp. 62–71.  Texas A & M University, College Station, Texas.

 

Goddard, J.  1996.  Physicians Guide to Arthropods of Medical Importance. pp. 374. CRC Press, New York.

 

Hedges, S. A.  1998.  Field Guide for the Management of Structure Infesting Ants,  2nd Ed. (D. Moreland, editor) pp. 202–216. G. I. E. Publishers, Cleveland, Ohio.

 

Hölldobler, B. &  E. O. Wilson.  1990.  The Ants.  pp. 165. Belknap Press.

 

Lofgren, C. S. & C. T. Adams.  1981.  Reduced yield of soybeans in fields infested with the red imported fire ant, Solenopsis invicta Buren.  Florida Entomologist 64:  199–202.

 

Mount, R. H.  1981.  The red imported fire ant, Solenopsis invicta (Hymenoptera: Formicidae) as a possible serious predator on some southeastern vertebrates: direct observa­tions and subjective impressions”.  Journal of the Alabama Academy of Science 52: 71–78.

 

Rhoades, R. B.  1977.  Medical aspects of the imported fire ant.  Gainesville:  University of Florida Press, 75 pp.

 

Shattuck, S. O.; Porter, S. D. & Wojcik, D. P.  1999.  Case 3069. Solenopsis invicta Buren, 1972 (Insecta, Hymenoptera): proposed conservation of the specific name.  Bulletin of Zoological Nomenclature 56:  27-30.

 

Smith, D. R.  1979.  Superfamily Formicoidea. Pp. 1323-1467  In: Krombein, K. V.; Hurd, P. D.; Smith, D. R.; Burks, B. D. (eds.) 1979.  Catalog of Hymenoptera in America north of Mexico. Volume 2. Apocrita (Aculeata). Washington, D.C.: Smithsonian Institution Press, pp. 1-16, 1199-2209.

 

Stimac, J. L. & S. B. Alves.  1994.  Pest Management in the Subtropics: Biological Control A Florida Perspective. (D. Rosen, F. D. Bennett, J. L. Capinera, eds.)   pp. 353–380.  Intercept Limited, Andover, Hants, SP 10 1 YG,  U.K.

 

Trager, J. C.  1991.  A revision of the fire ants, Solenopsis geminata group (Hymenoptera: Formicidae: Myrmicinae).  Journal of the New York Entomological Society 99:  141-198.

 

Vinson, S. B. & A. A. Sorenson.  1986.  Imported Fire Ants: Life History and Impact.  The Texas Department of Agriculture. PO Box 12847, Austin, Texas 78711.

 

Wheeler, G. C. & Wheeler, J.  1977.  Supplementary studies on ant larvae: Myrmicinae.  Transactions of the American Entomological Society 103:  581-602