Laguna Beach, CA. 10/25/05. © Peter J. Bryant		 Argentine Ant

Linepithema humile

Hymenoptera: Formicidae

Listed in "100 of the worst" in the Global Invasive Species Database
Link to: Argentine Ants being eaten by a Daddy Longlegs Spider

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Laguna Beach, CA. 10/25/05. © Peter J. Bryant
Laguna Beach, CA. 10/25/05. © Peter J. Bryant. Petiole (spine) visible on dorsal side just in front of abdomen:

Attracted to water.
Attracted to syrup.

Tending aphids
Tending aphids

Tending aphids. San Joaquin Freshwater Marsh, Irvine, Orange County, CA. 4-1-07. © Ron Hemberger

Fullerton Arboretum, Fullerton, Orange County, CA. 12-15-09. © Ron Hemberger

Fullerton Arboretum, Fullerton, Orange County, CA. 12-15-09. © Ron Hemberger
Well-fed individuals are banded, because their crops show through the thinner cuticle between the tergites. San Joaquin Freshwater Marsh, Irvine, Orange County, CA. 3-12-07. © Ron Hemberger

Queen and worker. Laguna Beach, Orange County, CA. 12/24/2017. © Peter J. Bryant
Queen. Laguna Beach, Orange County, CA. 12/24/2017. © Peter J. Bryant