Fireworm

Lanthanodrax speleotraxis.¹ (Also the occasionally occuring "sport" or hypotrophic subspecies, L. speleotraxis ignigastris.)

¹The taxonomy of the western European fireworm is somewhat confused. The Bestiarium Ignotum classified the fireworm as Lanthanotrops micrognotus, but this did not take into account the internal differences between the Lanthanotrops and Lanthanodrax families -- possibly understandable, since Linnaeus was unable to find a dead specimen to dissect, and trapping a live one was at that point out of the question.

Materia Magica's classification group has now placed the fireworm among the various members of family Hemerothalcus, so that a more correct species designation is Lanthanodrax speleotraxis, with am