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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 =
E =
I =
Gastropoda (Phylum) > Mollusca (Subphylum) > Patellogastropoda (Subclass) > Lottioidea (Superfamily) > Lottiidae (Family) > Notoacmea (Genus)
Genus: Notoacmeamap >
Notoacmea badia Oliver, 1926
Length 11mm, Width 9mm, Height 3.5mm, Endemic
South Island, Otago, at low tide [F]
Notoacmea cellanoides Oliver, 1926
Length 27mm, Width 23mm, Height 8mm, Endemic. More solid than pileopsis, with strong radial ribs and brown interior
North Island and northern South Island [ACF]
Notoacmea daedala (Suter, 1907)
Length 16mm, Width 14mm, Height 6mm, Endemic. Under boulders resting on clean sand, from intertidal flats to exposed shores
North, South and Stewart Islands [ACF]
Notoacmea elongata Quoy & Gaimard, 1834 (=helmsi Smith not of authors)
Length 20mm, Width 10mm, Height 3mm, Endemic. Under boulders from mud flats to exposed shores
North and South Islands [ACF]
Length 12mm, Width 9mm, Height 6mm, Endemic. On rocks and mussels at low tide
North, South, Stewart and Chatham Islands [ACFM]
Notoacmea pileopsis (Quoy & Gaimard, 1834)
Length 33mm, Width 28mm, Height 12mm, Endemic. Broadly ovate, outer surface finely radially lirate. Interior with an almost black margin
North Island and northern South Island [AC]
Notoacmea potae Nakano, Marshall, Kennedy & Spencer,2009
Length 8mm, Width 6mm, Endemic
North and South Island. On rocks in sheltered inlets [ACF]
Notoacmea rapida Nakano, Marshall, Kennedy & Spencer,2009
Length 5mm, Width 3mm, Endemic
North Island. Northland to Napier. In muddy harbours, on dead bivalves [ACF]
Notoacmea scapha (Suter, 1907) (=leucoma Suter, =helmsi of authors)
Length 9.1mm, Endemic
North and South Islands, in harbours on Zostera and dead shells [ACF]
Notoacmea scopulina Oliver, 1926
Length 19mm, Width 15mm, Height 5mm, Endemic
North and South Island. In the high intertidal zone on exposed shores [AC]
Notoacmea sturnus (Hombron & Jacquinot, 1841)
Length 29mm, Width 22mm, Height 12mm, Endemic. Narrowly elliptical, with the apex at the anterior end. Exterior is smooth
South Island, from Banks Peninsula south. Snares, Auckland, Campbell, Bounty, Antipodes & Macquarie Islands [FAn]
Length 19mm, Width 14mm, Endemic
Auckland and Campbell Islands. Inhabits the high intertidal zone to splash zone on exposed shores [An]
Notoacmea subtilis (Suter, 1907)
Length 6mm, Width 5mm, Height 3mm, Endemic
North and South Islands [ACF]
Notoacmea turbatrix Nakano, Marshall, Kennedy & Spencer,2009
Length 7mm, Width 5mm, Endemic. On intertidal rocks
North and South Islands. Low tide, on rocks and shells in exposed rock pools [ACF]