''Parorchestia tenuis'' is a species of

amphipod Amphipoda is an order of malacostracan crustaceans with no carapace and generally with laterally compressed bodies. Amphipods range in size from and are mostly detritivores or scavengers. There are more than 9,900 amphipod species so far descr ...

in the family Talitridae. It is "widespread and common" in New Zealand, and is only missing from Canterbury and North

Otago Otago (, ; mi, Ōtākou ) is a region of New Zealand located in the southern half of the South Island administered by the Otago Regional Council. It has an area of approximately , making it the country's second largest local government reg ...

References

Gammaridea Freshwater crustaceans of New Zealand Crustaceans described in 1852 {{NewZealand-stub