Note

Onykia knipovitchi: Description Continued

Richard E. Young, Michael Vecchione, and Kotaro Tsuchiya
  1. Arms
    1. Club 35% of ML.
    2. Carpal locking apparatus with 9-13 suckers (Kubodera, et al., 1998).
    3. Terminal (distal) club pad with 14-16 small suckers (Kubodera, et al., 1998).

  2. Head
    1. Rounded funnel groove appears to lack inverted Y-shaped ridge (region slightly damaged in our specimen).
    2. Radula
      1. Radula homodont with unicuspid rachidian and first lateral teeth.
      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

        Figure. View of half of a radular row of O. knipovitchi. Drawing modified from Filippova, 1972.

    3. Beak
      1. The upper beak has been illustrated but characteristics have not been described.
      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

        Figure. Side view of upper beak of O. knipovitchi. Drawing modified from Filippova, 1972.

      3. The lower beak has the following characteristics. The hood is curved at a characteristic angle to the crest; the hood is 30-50% of the crest length; a prominent lateral-wall fold is present and thickened along with the crest.These characteristics are from Clarke, 1980.
      4. 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. Side view of lower beak of O. knipovitchi with a cross-section through lateral wall and crest. Drawings from Clarke, 1980.

  3. Pigmentation
    1. mantle with light violet coloration.

  4. Measurements of holotype:
    Mantle length 225 mm
    Fin length 135 mm; 60% of ML
    Fin width 155 mm; 69% of ML
    Arms  I, length 99 mm; 44% of ML
    Arms  II, length 122 mm; 54% of ML
    Arms  III, length 119 mm; 53% of ML
    Arms  IV, length 119; 53% of ML
    Club length 28 mm; 35% of ML

Comments

Except where indicated, the above description is taken from Filippova, 1972.

References

Filippova, J. A. 1972. New data on the squids (Cephalopoda: Oegopsida) from the Scotia Sea (Antarctic). Malacologia, 11: 391-406.

Clarke, M. R. 1980. Cephalopoda in the diet of sperm whales of the Southern Hemisphere and their bearing on sperm whale biology. Discovery Reports, 37: 1-324.

About This Page


University of Hawaii, Honolulu, HI, USA


National Museum of Natural History, Washington, D. C. , USA


Tokyo University of Fisheries, Tokyo, Japan

Page: Tree of Life Onykia knipovitchi: Description Continued Authored by Richard E. Young, Michael Vecchione, and Kotaro Tsuchiya. 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.

close box

This page is a note that is attached to a leaf of the Tree of Life.

ToL notes provide brief accounts of characteristics, short summaries, commentaries, media files, taxonomic information, or identification tools for a given group of organisms.

For a more detailed explanation of the different ToL page types, have a look at the Structure of the Tree of Life page.

close box

Filippovia knipovitchi

Page Content

articles & notes

collections

people

Explore Other Groups

random page

  go to the Tree of Life home page
top