Haustrum haustorium
| Haustrum haustorium | |
|---|---|
.JPG) |
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| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| (unranked): | clade Caenogastropoda clade Hypsogastropoda clade Neogastropoda |
| Superfamily: | Muricoidea |
| Family: | Muricidae |
| Subfamily: | Haustrinae |
| Genus: | Haustrum |
| Species: | H. haustorium |
| Binomial name | |
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Haustrum haustorium (Gmelin, 1791) |
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Haustrum haustorium, common name: the brown or dark rock shell, is a large species of predatory sea snail, a marine gastropod mollusc in the family Muricidae, the murex snails or rock snails.
Haustrum haustorium used to be the only species in the genus Haustrum. However, Beu (2004) reclassified a number of New Zealand's whelks, considering species in the genus Lepsiella to be synonymous with the genus Haustrum.
This species occurs in New Zealand.
A reliable characteristic for distinguishing Haustum haustorium from its congeners is the angle by which the aperture lip inserts on the shell: In Haustrum haustorium the angle is near-perpendicular, whereas in other species the angle is more acute (~45 degrees). Tan (2003) provides the most recent review.
This rock snail's typical habitat is the mid and lower zone of New Zealand's semi-exposed rocky intertidal shores. It is less common on algal-dominated sheltered shores.
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