Paracorophium lucasi Hurley, 1954 [3] Chaetocorophium is a monotypic[4] genus of amphipods in the family Corophiidae, containing only the species Chaetocorophium lucasi.

Chaetocorophium is very closely related to Paracorophium, and some researchers propose synonymising the two genera.

[3] C. lucasi is endemic to New Zealand, where it is found only in a few sites in the North Island (Lake Rotorua, Lake Waikare, Lake Rotoiti, at Whakatāne, Raglan, Waitara, and Whanganui) and in lakes and intertidal mudflats across South Island.

It is epigean,[4] and was listed as "Sparse" in the 2002 New Zealand Threat Classification System list for freshwater invertebrates.

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