The story
- Proto-Indo-European*ped-
- Proto-Indo-European*pṓds
- Proto-Italic*pets
- Latinpēs
- Latinpalpō
- Latinpalpus
- Latinpedipalpus
- English todaypedipalp
From New Latin pedipalpus, from ped-, pēs (“foot”) + palpus (“palpus”).
Etymology from Wiktionary, CC BY-SA 4.0.