NZ Mollusca

Micrelenchus tenebrosus A.Adams, 1853

Micrelenchus tenebrosus
Marfells Beach, Marlborough, 8mm
Classification: Gastropoda - Vetigastropoda
Synonyms: (=Cantharidus Montfort)
(=parcipictus Powell)
Size/Grows to: Height 11mm, Width 10mm
Distribution: Southern North Island, South and Stewart Island. Under stones in coastal regions [A.C.F.]
Notes: Endemic. Coastal, open water on seaweed and under kelp holdfasts
Some known Localities
  • Waihi Beach, Bay of Plenty, NZ
  • W side of Town Reach, Sulphur Point, Tauranga Harbour, Bay of Plenty, NZ *2
  • E of East Cape Lighthouse, NZ
  • W end Ohope Beach, E of Whakatane, Bay of Plenty, NZ
  • Cape Kidnappers, Hawkes Bay, NZ
  • Ototoka, NW of Wanganui, NZ
  • Pakawau, Golden Bay, W Nelson, NZ
  • Mutton Cove, Separation Point, N of Motueka, Tasman, NZ
  • Karehana Bay, Plimmerton, Wellington, NZ
  • Tahunanui Beach, Nelson, NZ
  • Waitaha Cove, Lyall Bay, Wellington, NZ
  • Marfells Beach, near Cape Campbell, Marlborough, NZ
  • Cape Campbell, Marlborough, NZ, (holotype)
  • Fyffe Cove, between Whakatu & Avoca points, Kaikoura, Canterbury, NZ
  • Motunau Island, 25 metres, South of Kaikoura, Canterbury, NZ
  • Okains Bay, Akaroa, Christchurch, Canterbury, NZ
  • S side of Smoothwater Bay, SW of Haast, Westland, NZ *2
  • Off Oamaru, Otago, NZ
  • Deas Cove, Thompson Sound, Fiordland, NZ *2
  • Moeraki Beach, Otago, NZ
  • Shag Point, Otago, NZ
  • Warrington, NE of Dunedin, Otago, NZ
  • Long Beach, Purakanui, NE of Dunedin, Otago, NZ
  • Halfway up W bank in S opening bay, Edwardson Sound, Fiordland, NZ
  • W end of St Clair Beach, Dunedin, Otago, NZ
  • Puysegur Point, Southland, NZ, (type of Micrelenchus parcipictus Powell, 1946)
  • Wakapatu Beach, W of Riverton, Southland, NZ
  • Riverton, Southland, NZ
  • Kaimataitai, Nugget Point, Otago, NZ
  • Porpoise Bay, Catlins, Southland, NZ
  • Waipapa Point, Southland, NZ
  • Big Bungaree Beach, Stewart Island, NZ
  • Deep Bay, Stewart Island, NZ
  • Head of North Arm, Port Pegasus, Stewart Island, NZ
more localities
  • Donald, K.M., Spencer, H.G. 2016: Phylogeographic patterns in New Zealand and temperate Australian cantharidines (Mollusca: Gastropoda: Trochidae: Cantharidinae): Trans-Tasman divergences are ancient, Molecular Phylogenetics and Evolution, 100 (p.341)
  • Marshall, B.A. 1998: The New Zealand Recent species of Cantharidus Montfort, 1810 and Micrelenchus Finlay, 1926 (Mollusca: Gastropoda: Trochidae), Molluscan Research, 19 (p.125)
  • Powell, A.W.B. 1979: New Zealand Mollusca: Marine, Land and Freshwater Shells, Collins, Auckland (p.57)

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

*2 © Museum of New Zealand Te Papa Tongarewa CC BY-NC-ND