Note

Pterygioteuthis microlampas: description continued

Annie Lindgren
  1. Arms
    1. Arms IV
      1. Right arms IV have 2 series of suckers in males and females.
        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 right arms IV for P. microlampas (stained with methylene blue). Top - Female.  Bottom - Male (note suckers begin in distal half of arm).  © Annie Lindgren

      2. Hectocotylus plate and associated membrane.
        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 the hectocotylus plate for P. microlampas. Note ridges next to hectocotylus plate. © Annie Lindgren

        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. Upper left - P. gemmata toothed plates from the hectocotylus of two males from off California (redrawn from Young, 1972) and from one male from off New Zealand (redrawn from Riddell, 1985).  Bottom left - P. microlampas toothed plates from two males from off New Zealand (redrawn from Riddell, 1985). Right - A cleared hectocotylus of P. microlampas from Hawaiian waters showing the toothed plate. Black dots throughout the arm tissue are artifacts. Photograph by R. Young.

    2. Hook cusps
    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 a portion of Arm II of P. microlampas, preserved and cleared, showing suckers and hooks. Note double cusps on hooks. Tiny balls are artifacts. Photograph by R. Young

  2. Tentacles 
    1. Tentacle clubs with enlarged dorsal series on manus.
      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 a tentacle club from P. microlampas. Note size gradation of suckers across the manus.  © Annie Lindgren

  3. Head
    1. Buccal membrane with papillae
      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 the buccal membrane (and associated papillae) of P. microlampas. © Annie Lindgren

  4. Photophores
    1. Eye photophores - with 10 large and 4 minute organs.
      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.  Small eye photophores of a female P. microlampas.  © Annie Lindgren

    2. Tentacular photophores - 4 visible from tentacle base, along stalk to base of club.
      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, arms and tentacles of a preserved and cleared P. microlalmpas (18 mm ML, female, off Hawaii). The white tentacular photophores are clearly visible on both tentacles. The only ocular photophore that cannot be seen is the one posterior to the lens. Photograph by R. Young.

  5. Pigmentation
    1. Arm chromatophores begin prior to arm base and extend to tips of arms.
      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 arm I, II chromatophores for P. microlampas. © Annie Lindgren

    2. Mantle chromatophores
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      Click on an image to view larger version & data in a new window

      Pterygioteuthis microlampas. © Annie Lindgren

About This Page

Annie Lindgren
Ohio State University, Columbus, Ohio, USA

Correspondence regarding this page should be directed to Annie Lindgren at alindgre@gmail.com

All Rights Reserved.

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Pterygioteuthis microlampas

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