Prophysaon foliolatum
Prophysaon foliolatum, or the yellow-bordered taildropper, is a slug in the genus Prophysaon, native to North America, ranging from Alaska to Oregon.
Appearance
This species is an overall dull brown colored slug, with a yellow line bordering its mantle. The similar species P. andersonii does not have this yellow border.Forms
There is a Canadian color form that is almost black, but it can still be distinguished by the bright yellow border the mantle.Albino individuals have been spotted on the Olympic coast.