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For Insects, Spiders & Their Kin
For the United States & Canada
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Photos of insects and people from the 2015 gathering in Wisconsin, July 10-12

Photos of insects and people from the 2014 gathering in Virginia, June 4-7.

Photos of insects and people from the 2013 gathering in Arizona, July 25-28

Photos of insects and people from the 2012 gathering in Alabama

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Species Solenopsis invicta - Red Imported Fire Ant

Solenopsis invicta? - Solenopsis invicta Solenopsis invicta Monomorium pharaonis - Solenopsis invicta Fire Ant Queen with small worker - Solenopsis invicta - female Prickly ant - Solenopsis invicta Ants - Solenopsis invicta Solenopsis (invicta or xyloni?) - Solenopsis invicta - female Red-Black Ant - Solenopsis invicta
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Hymenoptera (Ants, Bees, Wasps and Sawflies)
No Taxon (Aculeata - Ants, Bees and Stinging Wasps)
Superfamily Formicoidea (Ants)
Family Formicidae (Ants)
Subfamily Myrmicinae
Tribe Solenopsidini
Genus Solenopsis (Fire Ants and Thief Ants)
No Taxon (fire ants)
Species invicta (Red Imported Fire Ant)
Synonyms and other taxonomic changes
Solenopsis saevissima wagneri Santschi 1916
(Solenopsis invicta conserved over Solenopsis wagneri because of usage, in accord with ICZN)
Explanation of Names
Solenopsis invicta Buren 1972
3-6 mm
Red front end, dark brown to black rear end. Two nodes attach the abdomen to the thorax (see below).
native to South America, adventive in our area and spreading throughout so. US north to MD-IL-MO-TX-CA); introduced to many Old World countries(1)(2)
Omnivorous, will eat almost any plant or animal material, alive or dead
The most aggressive and widespread of the fire ants found in North America. It was introduced into the US from Brazil between 1933 and 1945.
If their nest is stepped on, the workers rush out and sting the feet and legs of the intruder. Each sting results in a small, painful wound that develops into a pustule in 24-48 hours. As the pustules heal they become itchy and can become infected.
A scarab, Martineziana dutertrei, lives with this ant, is often very common and comes to light.
bite remedies discussed here
Print References
Buren W.F. (1972) Revisionary studies on the taxonomy of the imported fire ants. J. Georgia Ent. Soc. 7: 1-26. PDF
Internet References