Montane-endemic
Guides
Cicindela tranquebarica sierra
Sierra Tiger Beetle
The Sierra Tiger Beetle is a montane subspecies of the common tiger beetle Cicindela tranquebarica, restricted to the Sierra Nevada mountains of California. It represents a high-elevation form distinguished from lowland populations by its coloration and habitat association. Like other tiger beetles, it is a fast-running, visually oriented predator active during daylight hours. The subspecies designation reflects both geographic isolation and morphological differentiation from nominate C. tranquebarica populations.
Microhexura montivaga
Spruce-fir moss spider
A miniature mygalomorph spider endemic to the highest peaks of the southern Appalachian Mountains. First described in 1925, this species inhabits moss growing on rocks beneath spruce-fir forest canopy. Listed as federally endangered in 1995 due to severe declines in its montane forest habitat. Genetic studies reveal significant population fragmentation across six allopatric populations, though morphological differences remain minimal.