Asperoteuthis nesisi
Encyclopedia
Asperoteuthis nesisi is a chiroteuthid
Chiroteuthidae
Chiroteuthids are deep-sea squid of the family Chiroteuthidae. They are generally small to medium in size, rather soft and gelatinous, and slow moving. They are found in most temperate and tropical oceans, but are known primarily from the North Atlantic, North Pacific, and Indo-Pacific...

 squid
Squid
Squid are cephalopods of the order Teuthida, which comprises around 300 species. Like all other cephalopods, squid have a distinct head, bilateral symmetry, a mantle, and arms. Squid, like cuttlefish, have eight arms arranged in pairs and two, usually longer, tentacles...

 of the genus Asperoteuthis
Asperoteuthis
Asperoteuthis is a genus of chiroteuthid squid comprising four species.-References:*Lu, C.C. 1977. A new species of squid, Chiroteuthis acanthoderma, from the Southwestern Pacific . Steenstrupia Zoological Museum University of Copenhagen 4: 179–188.*Young, R.E., M. Vecchione & C.F.E. Roper 2007...

. It is native to the waters off South Georgia and, more generally, the Southwest Atlantic
Atlantic Ocean
The Atlantic Ocean is the second-largest of the world's oceanic divisions. With a total area of about , it covers approximately 20% of the Earth's surface and about 26% of its water surface area...

. Asperoteuthis nesisi has a thin mantle
Mantle (mollusc)
The mantle is a significant part of the anatomy of molluscs: it is the dorsal body wall which covers the visceral mass and usually protrudes in the form of flaps well beyond the visceral mass itself.In many, but by no means all, species of molluscs, the epidermis of the mantle secretes...

 and arms
Cephalopod arm
A cephalopod arm is distinct from a tentacle, though the terms are often used interchangeably.Generally, cephalopod arms have suckers along most of their length, as opposed to tentacles, which have suckers only near their ends. Octopuses have eight arms and no tentacles, while squid and cuttlefish...

, and peculiar integumental tubercles on its head and mantle. The largest arm suckers possess twelve to fourteen sharp, triangular teeth.
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