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Galiteuthis armata Joubin, 1898

Richard E. Young
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Containing group: Galiteuthis

Introduction

G. armata, the type species of the genus, is rather large (max. known 610 mm ML - Roper & Jereb, 2010) like other species in the genus. This Atlantic species is very similar to the North Pacific G. phyllura but morphological or molecular data that substantiates the separation of these species is lacking.

Characteristics

  1. Tentacles
    1. Distal most stalk suckers just proximal to club seem to be in two series on either side of the stalk (four series total) before merging into the normal two series.
    2. Click on an image to view larger version & data in a new window
      Click on an image to view larger version & data in a new window

      Fugure. Oral view of the tentacular club of G. armata, ca. 240 mm ML, club slightly damaged by fixation. Photograph by R. Young.

  2. Head
    1. Beaks: Descriptions can be found here: Lower beak; upper beak.
    2. Photophores: distal ocular photophore bar-shaped with slight curve.

    Click on an image to view larger version & data in a new window
    Click on an image to view larger version & data in a new window

     Figure. Ventrolateral view of the head and brachial crown of G. armata. Note the shape of the ocular photophores. Photograph by R. Young, taken aboard the R/V G.O. SARS during the MARECO cruise in the central North Atlantic.

  3. Tubercules
    1. At fused funnel/mantle locking apparatuses: 2-4 tubercules but exact arrangement uncertain.
    2. At fused head/mantle locking apparatus in nuchal region: None.

Life History

The chromatophore in a juvenile (see below) are few in number, each chromatophore is slightly elongate and chromatophores on the mantle are located mostly on the lateral surfaces of the mantle.
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Figure. Dorsal (top), side (middle) and ventral (bottom) views of a young (42 mm ML) G. armata, preserved, North Atlalntic, showing mantle chromatophore arrangement. Photograph by R. Young.

Distribution

TYPE LOCALITY: ? Nice, Mediterranean Sea.

G. armata is found in tropical and north temperaterate waters of the Atlantic (Nesis, 1982/87).

References

Nesis, K. N. 1982/87. Abridged key to the cephalopod mollusks of the world's ocean. 385+ii pp. Light and Food Industry Publishing House, Moscow. (In Russian.). Translated into English by B. S. Levitov, ed. by L. A. Burgess (1987), Cephalopods of the world. T. F. H. Publications, Neptune City, NJ, 351pp.

Roper, C. F. E. and P. Jereb. 2010. P. 148-178. In: Jereb. P; Roper, C.F.E (eds). Cephalopoda of the world. An annotated and illustrated catalogue of cephalopod species known to date. Vol. 2. Myopsid and Oegopsid Squids. FAO Species Catalogue for Fishery Purposes. No. 4, Vol.2. Rome, FAO. 2010.

Title Illustrations
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Scientific Name Galiteuthis armata
Location Central North Atlantic
Acknowledgements Photograph taken on the MarEco cruise of the R/V G.O. SARS
Specimen Condition Live Specimen
View Side
Size 240 mm ML
Image Use creative commons This media file is licensed under the Creative Commons Attribution-NonCommercial License - Version 3.0.
Copyright © 2004
About This Page


University of Hawaii, Honolulu, HI, USA

Correspondence regarding this page should be directed to Richard E. Young at

Page: Tree of Life Galiteuthis armata Joubin, 1898. Authored by Richard E. Young. The TEXT of this page is licensed under the Creative Commons Attribution-NonCommercial License - Version 3.0. Note that images and other media featured on this page are each governed by their own license, and they may or may not be available for reuse. Click on an image or a media link to access the media data window, which provides the relevant licensing information. For the general terms and conditions of ToL material reuse and redistribution, please see the Tree of Life Copyright Policies.

Citing this page:

Young, Richard E. 2011. Galiteuthis armata Joubin, 1898. Version 22 November 2011 (under construction). http://tolweb.org/Galiteuthis_armata/19571/2011.11.22 in The Tree of Life Web Project, http://tolweb.org/

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