Honestly, I would check any alpine organism for speciation. Check specimens first against nearby ones, then if you don't see a split, farther out. In a high mountain chain that is more ridges than peaks, a species may have quite a long noodle of territory. But peaks are highly prone to isolation, which drives speciation. Only where you have easy means of dispersion will a species tend to spread farther instead of splitting up -- like birds or windblown weed seeds.

Checking may be done via field marks, analysis of specimens, observations of behavior, etc. If you can afford it, use DNA analysis. Prefer hair or scat when surveying small populations to minimize impact.

And we don't want to lose them because we are technically still in an ice age (because of the polar ice caps) and might need them. They are super good at surviving under insane conditions. Also, tiny but delicious, and a key part of alpine food webs.