Red Imported Fire Ant, Solenopsis invicta

Worker	Red Imported Fire Ant Solenopsis invicta Hymenoptera: Formicidae Peralta Park, Anaheim Hills, Orange County, CA. 9/6/07. Description and warning from Orange County Vector Control Listed in "100 of the worst" in the Global Invasive Species Database © Peter J. Bryant Back to Hymenoptera index page Back to Arthropods of Orange County, California Back to Natural History of Orange County, California
Two nodes between the thorax and abdomen	Toothed mandibles
Flat-topped nest with multiple entrances	Underground galleries
Two workers; one moving a pupa	Head and thorax red; abdomen brown
Large size variation	Large size variation
Greeting	Moving a larva
Worker	Worker
Male	Wing of male
Pustule 24h after sting. Diameter 4mm.	Pustules 24h after sting. Diameter 3 and 4mm.