Linepithema humile (Mayr)
Argentine ants were imported from South America just over a hundred years ago. They are found in the south and west with spotty infestations in northern states.
Argentine ant colonies can grow to monumental size.
Their colony borders sometimes cover entire habitats. Argentine ant queens also assist with foraging for food. The ant gives off a musty odor when crushed. Worker argentine ants are about one sixteenth of an inch long. Queen argentine ants are one eighth of an inch to one quarter of an inch long.
Color: Dark brown to black; shiny
Shape: Segmented; oval
Size: 1/16-1/4 inches
Flying: Rare winged swarmers
Region: AL, AR, CA, FL, GA, IL, LA, MD, MO, MS, NC, OR, SC, TN, WA