Where does “pulga” come from?

pulga (Old Spanish) comes from Vulgar Latin pulica, from Latin pūlex, from Proto-Indo-European *plus- — flea.

Ancestry of “pulga”, step by step

StepLanguageWordMeaning
1Vulgar Latinpulicaflea
2Latinpūlexflea
3Proto-Indo-European*plus-flea

Words derived from “pulga”

Every word from Proto-Indo-European *plus- →Every word from Latin pūlex →Every word from Vulgar Latin pulica →