 Péron had labelled the animal "Scyllarus incisus", and had previously called it "Scyllarus kingiensis".Although the type locality was given simply as "New Holland" (now Australia), historical records demonstrate that the animal was caught off King Island, in the Bass Strait between Tasmania and the Australian mainland.Common names used in Australia for "Ibacus peronii" include "Balmain bug", "Eastern Balmain bug", "butterfly lobster", "flapjack", "Péron's Ibacus crab", "sand crayfish", "sand lobster", "southern shovel-nosed lobster", "prawn killer" and "squagga", although the last two are not in current use.