The Ants of the Santa Barbara Museum of Natural History
The Rugose Leptothorax (Leptothorax rugatulus) - native
This species can be recognized by the following characteristics:
- Worker length 2.5-3mm
- Color yellowish brown, with head and abdomen slightly darker
- Head and thorax roughly textured, not as shiny as abdomen
Leptothorax rugatulus is found throughout western North America, from the Dakotas westward, south through California, Arizona and Texas into Mexico. In California most published records are from higher elevations of the Sierra Nevada.
This ant prefers to nest in rotten wood and under rocks. Our single collection of this species was from a treehole in a coast live oak.