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Note

Pterygioteuthis giardi Description

Annie Lindgren
  1. Arms
    1. Arms III - suckers proximal to hooks.
      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 left arm III from a female P. giardi (stained with methylene blue).  ©

    2. Arms IV
      1. Male right arm IV and hectocotylus
        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.  Arms IV for male P. giardi. Left/Top - Medial view showing hectocotylus plate and teeth.  Right/Bottom - Lateral view showing hectocotylus lobes, and 2 hooks on right arm IV.  Photographs by R. Young, A. Lindgren.

      2. Female arms IV lack suckers or hooks
        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 an arm IV from a female P. giardi. ©

  2. Tentacular clubs - with 4 series of regularly sized suckers.
    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 for P. giardi. Sucker rows across manus are evenly sized (some suckers are missing).  Also note tentacle locking apparatus and associated pads.©

     

  3. Photophores
    1. Eye with 10 large and 5 minute photophores
      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 a damaged eye of P. giardi, showing the 5 minute eye photophores (see arrows) ©

       

About This Page


Ohio State University, Columbus, Ohio, USA

Correspondence regarding this page should be directed to Annie Lindgren at

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