About Petrolisthes novaezelandiae Filhol, 1885
This species has a flattened carapace covered in short fine hairs. The carapace reaches up to 12 mm in length and up to 12.5 mm in width. Males are typically dull reddish to tan brown, while females are greyish brown, often marked with small red spots. The chelae are more slender than those of P. elongatus, and are generally larger in males. This species is endemic to New Zealand, where it is widely distributed as far south as the Auckland Islands. It is most commonly found beneath boulders or within shell debris. On hard shores, it sometimes occurs in the holdfasts of seaweed, particularly Macrocystis sp. It is rarely found in the intertidal zone, and is more common at depths between 3 and 75 meters.