Note

Opisthoteuthis bruuni Description Continued

Richard E. Young and Michael Vecchione
  1. Eyes
    1. Large.

  2. Funnel
    1. Funnel organ 2-parted, each part oval in small animals to slender in large animals.

  3. Fins
    1. Small, ca. 1/3 of head width.

  4. Gills
    1. Half-orange shape.
    2. With 6 primary lamellae.

  5. Optic lobe and optic bundles
    1. Optic lobe round.
    2. Several optic bundles arise from each optic lobe according to illustration below.
      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 (A) and ventral (B) views of optic lobe, white body and eye from the same O. bruuni. Drawing from Voss (1982).

  6. Digestive system
    1. Radula absent.
    2. Posterior salivary glands absent.
    3. Stomach and spiral caecum equal in size.
    4. Form of digestive gland uncertain.
      5. 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. Lateral view of digestive tract of O. bruuni. Drawing.

  7. Beaks
    1. Slight depression or groove on the lamella of the upper beak.
      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. Beaks of O. bruuni: Left - Upper. Right - Lower.

  8. Reproductive tracts
    1. Female: distal oviduct massive.
    2. Male: tract illustrated but not described.
      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. Lateral views of reproductive tracts of O. bruuni. Top - Female. Bottom - Male. Drawing.

  9. Shell
    1. Shell broadly U-shaped.
    2. Wings flared and taper to fine outward-turned conical ends.
      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. Shell of O. bruuni. Top - Dorsal (?) view. Drawing from Voss (1982). Bottom - Dorsal view (left), wing (right), O. bruuni from type series. Photographs by R. Young.

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

References

Voss, G. L. 1982. Grimpoteuthis bruuni, a new species of finned octopod (Octopoda: Cirrata) from the Southeastern Pacific. Bull. Mar. Sci., 32: 426-433.

About This Page
Drawings from Voss (1982) printed with the Permission of the Bulletin of Marine Science.


University of Hawaii, Honolulu, HI, USA


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

Page: Tree of Life Opisthoteuthis bruuni Description Continued Authored by Richard E. Young and Michael Vecchione. 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.

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