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.E.]
Some known Localities
  • Waihi Beach, Bay of Plenty
  • W side of Town Reach, Sulphur Point, Tauranga Harbour *2
  • E of East Cape Lighthouse
  • W end Ohope Beach, E of Whakatane
  • Cape Kidnappers, Hawkes Bay
  • Ototoka, NW of Wanganui
  • Pakawau, Golden Bay, W Nelson
  • Mutton Cove, Separation Point, N of Motueka
  • Karehana Bay, Plimmerton, N of Wellington
  • Tahunanui Beach, Nelson
  • Waitaha Cove, Lyall Bay, Wellington
  • Marfells Beach, near Cape Campbell, Marlborough
  • Cape Campbell, Marlborough, (holotype)
  • Fyffe Cove, between Whakatu & Avoca points, Kaikoura
  • Motunau Island, South of Kaikoura, 25 metres
  • Okains Bay, Akaroa, Christchurch
  • S side of Smoothwater Bay, SW of Haast *2
  • Off Oamaru
  • Deas Cove, Thompson Sound, Fiordland *2
  • Moeraki Beach, Otago
  • Shag Point, Otago
  • Warrington, NE of Dunedin
  • Long Beach, Purakanui, NE of Dunedin
  • Halfway up W bank in S opening bay, Edwardson Sound, Fiordland
  • W end of St Clair Beach, Dunedin
  • Puysegur Point, Southland, (type of Micrelenchus parcipictus Powell, 1946)
  • Wakapatu Beach, W of Riverton
  • Riverton, Southland
  • Kaimataitai, Nugget Point, Otago
  • Porpoise Bay, Catlins
  • Waipapa Point, Southland
  • Big Bungaree Beach, Stewart Island
  • Deep Bay, Stewart Island
  • Head of North Arm, Port Pegasus, Stewart Island
more localitiesspecies mapgenus map
Notes: Coastal, open water on seaweed and under kelp holdfasts
References:
  • 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