Species Images
A pulmonate slugs living in the littoral zone
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Key to Geographical Ranges
The symbols K.A.C.F.M.An. are used to indicate the geographical range of the species. They have been adopted to give an approxomation of the range of each species within New Zealand.
Kermadec Islands
Aupourian - Kaipara Harbour, north around North Cape, encompassing the Three Kings Islands and south to East Cape
Cookian - Lower North Island and the northern part of the South Island
Forsterian - Otago, Fiordland and Stewart Island
Moriorian - Chatham Islands, Pitt Island
Antipodean - Subantarctic Islands of New Zealand
FW =
L =
N =
North Island
S =
South Island
E =
I =

Onchidella nigricans (Quoy & Gaimard, 1832)

Classification:Mollusca (Phylum) > Gastropoda (Class) > Heterobranchia (Subclass) > Systellommatophora (Order) > Onchidioidea (Superfamily) > Onchidiidae (Family) > Onchidella (Genus)
Size/Grows to:Length 23mm, Width 16mm (animal)
Synonyms:(=patelloides Quoy & Gaimard, =obscura Plate)
Distribution:North, South, Stewart and Chatham Islands
Geographical Range:ACFM
References and Publications:
  • Morley, M.S., Hayward, B.W. 2015: Intertidal records of 'sea slugs' (nudibranchs and allied opisthobranch gastropods) from northern North Island, New Zealand, Records of the Auckland Institute and Museum, 50 (p.78)
  • Walsby, J.R., Morton, J.E. 1982: Chitons, Limpets & Topshells & Pulmonates (Amphineura, Archaeogastropoda & Pulmonata), Marine Molluscs, University of Auckland, Leigh Marine Laboratory, 1 (p.85)
  • Powell, A.W.B. 1979: New Zealand Mollusca: Marine, Land and Freshwater Shells, Collins, Auckland (p.291)
  • Stringer, B.L. 1969: The species of New Zealand Onchidiidae (Mollusca, Gastropoda) and their distribution, New Zealand Journal of Marine and Freshwater Research, 3(1) (p.31)

Note: Localities are approximate, and represent only some of the known localities for the species.