Note

Chiroteuthis veranyi: Description continued

Richard E. Young and Clyde F. E. Roper
  1. Arms
    1. Arms I ca. 85% of ML
    2. Arms III ca. 145% of ML
    3. Arms IV ca. 220% of ML
    4. Largest suckers not globular nor greatly enlarged.
    5. Large arm suckers with 16 narrow, pointed teeth on distal 2/3 of ring. Distal 10 teeth long, narrow, pointed; lateral teeth short, blunt.
      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. Oral view of , sucker 2, arm III. of C. veranyi from off Bermuda, western North Atlantic. Photograph by R. Young. A more detailed look at the suckers can be seen here.

  2. Tentacular clubs
    1. Club length ca. 50% of ML
    2. Protective membranes
      1. Membranes in two distinctive sets of nearly equal length.
      2. Proximal set broad with x-xx trabeculae (xx-xx% of club length); trabeculae wide, undivided, adjacent and difficult to distinguish (i.e. appear fused in proximal half) from one another.
      3. Distal set narrow with 19-20 well-separated trabeculae
        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. Tentacle-club of C. veranyi. Top - Aboral view. Note arrangement of trabeculae in proximal protective membranes and embedded photophores in club midline. Bottom - Oral view. Drawings by A. D. Hart.

    3. Sucker stalks in two distinct parts; stalks of lateral sucker series about 2X longer than those of medial sucker series.
      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. Medial and lateral suckers and stalks of the club of C. veranyi. Note the well-defined pleats and size difference in the stalks of the two suckers. Drawings by A. D. Hart.

    4. Suckers with 7-9 pointed teeth over distal 2/3 of ring; central tooth enlarged.
      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. Tentacular club sucker of C. veranyi from off Bermuda, western North Atlantic. Photograph by R. Young. A more detailed look at the suckers can be seen here.

  3. Head
    1. Head length ca. 55% of ML.
  4. Funnel
    1. Funnel-locking apparatus with large, bulbus tragus, smaller tubercle-like antitragus.
      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. Ventral view of the funnel locking-apparatus of C. veranyi. Drawings by A. D. Hart (© C. Roper).

  5. Fins
    1. Fin length ca. 40% of ML.
    2. Fin width ca. 40% of ML
  6. Photophores
    1. Eyeball: lateral series= stripe; intermediate series = 3 (2 posterior:large + small; 1 anterior); medial series = stripe.
      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. Ventral view of eyes of C. veranyi. Posterior direction is toward the top. Note the lateral and medial photophore stripes and one posterior round photophore.

    2. Viscera: Two photophores.
    3. Club-tip photophore small, without central "line" (discontinuity in structure) and with small papilla.
      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. Aboral view of club-tip photophore of C. veranyi with lid cut and spread open. Note lack of discontinuity (bar) on photogenetic surface. Drawings by A. D. Hart. (© C. Roper)

    4. Eleven photophores embedded in aboral surface of club.
  7. Pigmentation
    1. Club-tip photophore??
    2. Much club pigment in epithelial cells rather than chromatophore organs.
    3. Club sucker bases??Sucker stalks pigmented??? with pleats in short, well-defined region.
    4. Buccal membrane unpigmented???.
    5. Olfactory organ???
About This Page


University of Hawaii, Honolulu, HI, USA


Smithsonian Institution, Washington, D. C., USA

Page: Tree of Life Chiroteuthis veranyi: Description continued Authored by Richard E. Young and Clyde F. E. Roper. 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

Chiroteuthis veranyi

Page Content

articles & notes

collections

people

Explore Other Groups

random page

  go to the Tree of Life home page
top