Lehmannia carpatica is a species of air-breathing land slug, a terrestrial pulmonate gastropod mollusc in the family Limacidae.

When Grossu & Lupu (1963)[2] first noted this species, in Romania, its long penis and lack of penial appendage led it to be confused with Ambigolimax waterstoni, which at that time was incorrectly named as Limax nyctelius; the later renamings as Lehmannia nyctelia or Ambigolimax nyctelius remained incorrect.

[1] Lehmannia carpatica occurs at high elevations along the Carpathian Mountains, in the Czech Republic, Slovakia, Poland, Hungary, Romania and Serbia.

Like other limacids, the animals are slim with a pointed tail, and the pneumostome lies is the posterior half of the mantle.

These characters are shared with Ambigolimax waterstoni, but that species has two prominent flaps running along the inside of the penis whereas these are lacking in L. carpatica, which instead has a prominent funnel-like structure at the end of the penis, surrounding the connection to the vas deferens.