Oh my goodness! Unless you are a Tree of Life developer, you really shouldn't be here. This page is part of our beta test site, where we develop new features for the ToL, often messing up a thing or two in the process. Please visit the official version of this page, which is available here.
Note

Grimpoteuthis boylei Description Continued

Martin Collins, Richard E. Young, and Michael Vecchione
  1. Eyes
    1. Moderate size; eye diameter - 33.9% of head width.

  2. Funnel
    1. Funnel organ V-shaped.

  3. Fins
    1. Anterior margin with lobe near attachment.

  4. Gills
    1. Half-orange shape.
    2. 7-8 primary lamellae.
      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 mantle cavity of G. boylei, paratype, female, 115 mm ML. Drawing from Collins (2003).

  5. Optic lobes and nerves
    1. Optic lobe spherical.
    2. Single optic nerve bundle passes through/by white body.

    3. 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

      xxFigure. Optic lobe, optic nerve tract, white body and eye of G. boylei, paratype, male, 63 mm ML. Drawing from Collins (2003).

  6. Digestive tract
    1. Radula present; poorly developed; homodont.
    2. Anterior salivary glands lie on buccal mass; posterior salivary glands present, small, located posterior to brain.
    3. Esophagus twice length of intestine.
    4. Intestine straight.
    5. Digestive gland unilobular.

    6. 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. Digestive tract of G. boylei. Top - Lateral view. Bottom - Dorsal view of brain, buccal mass, esophagus and posterior salivary glands, paratype, male, 63 mm ML. Drawings from Collins (2003).

  7. Beaks
    1. Lower beak with rounded hood; wing with diagonal flexure; lateral walls without ridges or folds. Photographs of the beaks can be found here.

    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. Upper (left) and lower (right) beaks of G. boylei, paratype, male, 63 mm ML. Drawings from Collins (2003).

  8. Male reproductive tract
    1. Accessory gland I largest.
    2. Penis long.

    3. 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. Dorsal (bottom) and ventral (top) views of the male reproductive tract of G. boylei, paratype, 63 mm ML. Drawings from Collins (2003).

  9. Female reproductive tract
    1. Proximal portion of oviducal gland one third, cream color; distal portion two thirds, green/brown.

    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. Ventral view of the female reproductive tract of G. boylei, paratype, female, 115 mm ML. Drawing from Collins (2003).

  10. Pigmentation
    1. Entire digestive tract darkly pigmented.
    2. Skin deep red in fresh specimens, reddish-brown in preservation.
    3. Pigmentation of oral and aboral surfaces of arms greater than mantle.
    4. Posterior margin of fin purple.

  11. Measurements
    1. Measurements and counts can be found here.

Comments

The above description is from Collins, 2003.

References

Collins, M. A. 2003. The genus Grimpoteuthis (Octopoda: Grimpoteuthidae) in the North-east Atlantic, with descriptions of three new species. Zoological Journal of the Linnean Society, 139 (1): 93-127.

About This Page

Martin Collins
Aberdeen University, Aberdeen, UK


University of Hawaii, Honolulu, HI, USA


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

All Rights Reserved.

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

Grimpoteuthis boylei

Page Content

articles & notes

collections

people

Explore Other Groups

random page

  go to the Tree of Life home page
top