Winter Ant (Prenolepis imparis)
Prenolepis imparis (Winter Ant). Prenolepis is a strong competitor to the invasive Argentine Ant. As their common name implies, they can remain active in cold weather, when Argentines tend to go indoors. They can coesist with and even fight the Argentines. [p 32]
Shining in the sun. Near the northwest edge of Jasper Ridge, ant survey points HS.