NZ Mollusca

Risellopsis varia (Hutton, 1873)

Risellopsis varia
Found in beach drift, Far North, NZ, 4.5mm
Classification: Mollusca - Gastropoda - Caenogastropoda - Littorinimorpha - Littorinidae: Lacuninae - Risellopsis
Family: LITTORINIDAE: LACUNINAE
Size/Grows to: Width 8mm, Height 6mm
Distribution: Throughout North, South, Stewart and Chatham Islands [A.C.F.M.]
Notes: Endemic. Very common on upper tidal rocks
Some known Localities
  • Tapotupotu Bay, Far North, NZ
  • Bland Bay, Northland, NZ
  • Goat Island, Leigh, Northland, NZ
  • Army Bay, Whangaparaoa Peninsula, Auckland, NZ
  • Chatham Islands, NZ
  • Stewart Island, NZ, (lectotype)
References:
  • Reid, D.G. 1989: The comparative morphology, phylogeny and evolution of the gastropod family Littorinidae, Philosophical Transactions of the Royal Society, 324 (p.91)
  • Powell, A.W.B. 1979: New Zealand Mollusca: Marine, Land and Freshwater Shells, Collins, Auckland (p.88)

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