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(Fabricius, 1775)

Carapace appreciably narrowed anteriorly, surface and limbs with numerous small hook-setae often concealed by encrusting growths of epifauna, frontal region produced as a narrow V-shaped rostrum, each distal half often contiguous and leaving only a narrow slit between them; each protogastric region with a tubercle; second and third peduncular segments of antenna slender; eyestalks totally visible from dorsal aspect. Second pereiopods thicker and longer than others. Female chelipeds small. Male chelipeds larger than in female, propodus short and inflated.

Carapace length up to 14 (20.5) mm.

Depth range from lower shore to 50 metres, on sand. Ovigerous crabs and larvae throughout year.

Carapace brownish to reddish yellow, chelipeds lighter.

Shetland, Orkney, Aberdeen, Firth of Forth, Northumberland, Yorkshire, Thames, East Channel, Wight, Portland, Channel Isles, Plymouth, Scilly Isles, Bristol Channel, Liverpool Bay, Isle of Man, Dublin, Belfast, Clyde & Argyll, Mayo, Galway Bay, Fastnet, Cork.

Inachus phalangium