
Argentine Ant
Iridomyrmex humilis
Difficult to identify but after a thorough study I believe my ID is correct. Here is where I made my final determination... https://myrmecos.wordpress.com/2008/04/13/how-to-identify-the-argentine-ant-linepithema-humile/

The Argentine ant (Linepithema humile), formerly Iridomyrmex humilis, is an ant native to northern Argentina, Uruguay, Paraguay, Bolivia and southern Brazil. It is an invasive species that has been established in many Mediterranean climate areas,[1] inadvertently introduced by humans to many places, including South Africa, New Zealand, Japan, Easter Island, Australia, Europe, Hawaii, and the continental United States.

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