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Jasus is a genus of spiny lobsters which live in the oceans of the Southern Hemisphere. They have two distinct "horns" projecting from the front of the carapace, but lack the stridulating organs present in almost all other genera of spiny lobsters. Like all spiny lobsters, they lack claws, and have long stout antennae which are quite flexible.

Species

The following species are included in the genus Jasus:

Jasus caveorum Webber & Booth, 1995
Jasus edwardsii (Hutton, 1875) – Southern Australia: Western Australia to New South Wales & Tasmania. South Island of New Zealand
Jasus frontalis (H. Milne-Edwards, 1837) – Juan Fernández Islands, Islas Desventuradas
Jasus jlemingi Glaessner, 1960 – a Miocene fossil from New Zealand
Jasus lalandii (H. Milne-Edwards, 1837) – Southern Africa (Namibia to Algoa Bay, South Africa
Jasus paulensis (Heller, 1862) – St. Paul Island and Amsterdam Island
Jasus tristani Holthuis, 1963 – Tristan da Cunha archipelago; Vema seamount
Another species, formerly known as "Jasus verreauxi" is found around New Zealand (especially the North Island), the Chatham Islands, and around Australia (Queensland to Victoria and Tasmania); it is now placed in the genus Sagmariasus.


Approximate distributions of the extant species of Jasus, after Phillips (2006).
Orange: J. caveorum; pink: J. frontalis; red: J. tristani; yellow: J. lalandii; blue: J. paulensis; green: J. edwardsii
Fisheries

Most of the extant species are liable to commercial exploitation, with the majority of the A$4.6 million New South Wales lobster fishery industry being based on J. edwardsii and the closely related Sagmariasus verreauxi. Jasus lalandii is the most important commercial rock lobster in southern Africa.


source - Wikipedia

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