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Histioteuthidae

From Wikipedia, the free encyclopedia

Histioteuthidae
Histioteuthis bonnellii
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Cephalopoda
Order: Oegopsida
Family: Histioteuthidae
Verrill, 1881[1]
Type genus
Histioteuthis
d'Orbigny, 1841

Histioteuthidae is a family of Oegopsid squid. The family was previously considered to be monotypic but the World Register of Marine Species assigns two genera to this family.[1]

The species classified under Histioteuthidae are mostly weakly muscled, moderately sized squid with a maximum mantle length of 33 cm (13 in). They generally have very long, robust arms and a short mantle with small, rounded fins. Their main distinguishing feature is that the eyes are different sizes and orient in different vertical directions. The larger left eye is semitubular, mobile, generally is directed back and up as indicated by the pattern of iridophores on the eye's outer surface. This means that when the squid is positioned obliquely the eye is pointed upwards towards the surface. It is thought that this is used to detect animals above the squid silhouetted against the sun during the day. The right eye has a normal shape and is oriented laterally and slightly downward. This arrangement gives the family the common name of cock-eyed squid.[2]

Genera and species

There are two genera which are included in the Histioteuthidae and a total of circa 19 species:[1][2]

References

  1. ^ a b c Finn, Julian (2016). "'Histioteuthidae Verrill, 1881". World Register of Marine Species. Flanders Marine Institute. Retrieved 6 March 2018.
  2. ^ a b Young, Richard E. & Vecchione, Michael (2013). "Histioteuthidae Verrill, 1881. Version 03 November 2013 (under construction)". The Tree of Life Web Project.
This page was last edited on 3 December 2023, at 04:56
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