About

The spruce-fir moss spider is an arachnid limited to high elevation peaks in the Southern Appalachians. This highly endangered spider is the world’s smallest tarantula. The spruce-fir moss spider is found on humid, mossy surfaces and is limited to elevations at or above ~5,400 feet - making the Roan Highlands one of the last remaining strongholds for the spider. There are only six surviving populations remaining throughout the spider’s entire range.

Threats

• Loss of mature Fraser firs

• Invasive pests (mainly the wooly adelgid beetle)

• Habitat destruction and fragmentation

• Climate change

• Trampling (the fragile moss mats the spider depends upon are easily trampled by off-trail hikers)

• Rock climbing

How You Can Help:

• Always stay on trail to avoid damaging habitat.

• Never climb onto rock or cliff faces at the Roan Highlands.

• Never touch or damage moss mats.

• Never bring in outside firewood, as this can transport invasive pests.

• Never cut wood from live trees.

• Use the boot brush near Carver’s Gap to remove potential invasive species from shoes.

• Support funding for conservation initiatives.

• Volunteer with groups that help restore and maintain Appalachian balds, such as the Southern Appalachian Highlands Conservancy and Appalachian Trail Conservancy.

• Volunteer with groups that help maintain trails at the Roan Highlands such as the Tennessee Eastman Hiking and Canoeing Club.

• Always pack out your trash and follow the 7 Leave No Trace principles.

• View our “How to Help” page for more ideas.