Pagurixus haigae
Pagurixus haigae
Pagurixus haigae
Pagurixus haigae
Pagurixus haigae
Pagurixus haigae
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Invertebrate · Crustaceans · Hermit crabs

Haig's Hermit Crab

Pagurixus haigae Komai & Osawa, 2007
up to 1.5 cm1-30 m
601

A hermit crab of a centimeter and a half, banded, long-eyed, and living in shells that most people would not notice as shells.

It is named for Janet Haig, who spent a career on the taxonomy of these animals - the anomurans, the group that contains hermit crabs, squat lobsters and porcelain crabs. Much of what can be identified in this section of the catalogue rests on work like hers: somebody sat with a microscope and a series of specimens and established what the differences actually were.

Biologically it is a small nocturnal detritus feeder, working rubble at night and hiding by day, dependent like all hermits on a supply of empty shells it cannot produce.

It lives deeper in the structure than the surface-dwelling species, which is why it is usually found by looking into a hole rather than at the reef.

How to recognise it
  • very small hermit crab with banded legs and long slender eyestalks
  • in minute gastropod shells among rubble
  • pale claws with darker tips
  • length up to 1.5 cm

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Last Update: August 30, 2026