Old-growth-dependent
Guides
Boridae
Conifer Bark Beetles
Boridae is a small family of tenebrionoid beetles comprising three genera: Boros (North America and northern Eurasia), Lecontia (endemic to North America), and Synercticus (Australia and New Guinea). These saproxylic beetles are strongly associated with coniferous trees, particularly standing dead pines. The family was previously classified within Salpingidae before being recognized as distinct. Despite their common name, they are not destructive forest pests but rather occupy specialized niches in dead wood decomposition.
Microhexura
Pygmy Funnel-web Spiders, spruce-fir moss spider (M. montivaga)
Microhexura is a genus of minute mygalomorph spiders endemic to North America, containing two described species: M. montivaga and M. idahoana. The genus represents the sole member of family Microhexuridae. M. montivaga, the spruce-fir moss spider, is restricted to high-elevation spruce-fir forests on isolated peaks in the southern Appalachians and is federally endangered. M. idahoana occurs in old-growth coniferous forests of the Pacific Northwest and northern Rocky Mountains. Both species inhabit moss mats and are among the smallest mygalomorph spiders.