Placostylus ambagiosus
| Placostylus ambagiosus | |
|---|---|
 |
|
| A shell of the subspecies Placostylus ambagiosus priscus | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| (unranked): |
clade Heterobranchia
clade Euthyneura |
| Superfamily: | Orthalicoidea |
| Family: | Bothriembryontidae |
| Subfamily: | Placostylinae |
| Genus: | Placostylus |
| Species: | P. ambagiosus |
| Binomial name | |
|
Placostylus ambagiosus Suter, 1906 |
|
clade Euthyneura
clade Panpulmonata
clade Eupulmonata
clade Stylommatophora
informal group Sigmurethra
Placostylus ambagiosus is a species of flax snail (Māori: pupuharakeke), a large air-breathing land snail, a terrestrial pulmonate gastropod mollusc in the family Bothriembryontidae.
This snail has a large (60–95 millimetres or 2.4–3.7 inches long) shell, which is heavily calcified.
This land snail species occurs in New Zealand. It is restricted to a small fragmented area of Northland Region, including the Aupouri Peninsula and Motuopao Island.
In 2011, Buckley et al. established, based on molecular phylogeny research and shell morphology research, that there are in fact no subspecies of Placostylus ambagiosus. However, in the past, what were thought to be eight extant subspecies and a number of undescribed but distinct populations were named; 6 of these "subspecies" are now extinct (marked with a †); conservation statuses were given according to the New Zealand Threat Classification System for the extant taxa: "nationally critical" and "nationally endangered":
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