closeup on the rare california scott barr salamander, plethodon asupak sitting on a moss covered stone

amphibia amphibian chordata caudata hightonia nature north american plethodon asupak plethodontidae scott bar salamander river drainage siskiyou county usa urodela animal biology california closeup endangered endemic herpetology lungless macro newt outdoors predator single tailed vertebrate wild wildlife wood zoology natural rare barr sitting moss covered stone