Length 14.5 mm. North Yorkshire. September 2014. (leg. Paula Lightfoot).
1: transverse slit-mouth with wrinkled lips occupies most of head.
2: distal tip of mouth lappet extending laterally from crescent-moon shaped head; no eyes or sensory tentacles.
3: pink border around head.
4: pink border around foot (4).
5: mantle-fold between mantle-cavity and hyponotum (6).

KEY ID FEATURES and similar species at: 01 Boreochiton ruber. Length 12mm. North Yorkshire. September 2014. (leg. Paula Lightfoot).