File:Formica curiosa, Pettit Lake, Idaho, Marek Borowiec.jpg

Summary
Formica curiosa from Pettit Lake, Idaho. The only all-red Formica (most species are uniformly dark or bicolored, with reddish head and mesosoma and black gaster) AND apparently only collected about a dozen times since it was described in 1935.

Photo by Marek Borowiec.