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Grimpoteuthis bathynectes Voss & Pearcy, 1990

Richard E. Young and Michael Vecchione
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Containing group: Grimpoteuthis

Introduction

G. bathynectes is known from the 13 specimens reported in the type description. They were captured in bottom trawls during a study of the fauna of the continental slope and the Tufts and Cascadia Abyssal Plains.

Characteristics

  1. Arms and web
    1. Arms subequal, with arms IV generally shortest.
    2. Web formula, variable, usually ABCDE.
    3. Web on dorsal arm margin extends nearly to arm tip.
    4. Web nodule present on ventral margin of each arm near, at or nearly at the termination of the web.
    5. Click on an image to view larger version & data in a new window
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      Figure. Oral view of left arm I of G. bathynectes, male, 50 mm ML. Drawing from O'Shea (1999).

  2. Suckers
    1. Dorsal arms with 47-58 suckers.
    2. Sucker arrangement: first 4-5 suckers small or minute, followed abruptly by larger suckers that increase in size over first third of arm length, then gradually decrease to tip.
    3. Sexual dimorphism in suckers: Males - largest sucker diameter 4.3-6.7% of ML, shape globular; females - largest sucker diameter 2.6 -3.5% of ML, shape tubular.
    4. Cirri short: length 0.7 - 1.5 x largest sucker diameter.
    5. First cirri between suckers 3 and 4.
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      Figure. Arm suckers and cirri of G. bathynectes. Female, 58 mm ML; male, 42 mm ML. Drawings from O'Shea (1999).

  3. Shell
    1. "...U-shaped, formed of rounded-edged flat strip that tapers to a thin flat point distally."
    2. "Fin insertions long and form slight angle near base with rounded apex."
    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 view of shell and lateral view of wing of G. bathynectes, male, 53 mm ML. Drawings from O'Shea (1999).

Comments

The above description is taken from Voss and Pearcy, 1990. More details of the description of G. bathynectes can be found here.

Among Pacific species, G. bathynectes differs from:

Distribution

G. bathynectes is known only from the Tufts and Cascadia Abyssal Plains in the North Pacific off Oregon. The type locality is 45°01.1'N, 135°12.0'W, 3932 m.

References

Voss, G. L. and W. G. Pearcy. 1990. Deep-water octopods (Mollusca: Cephalopoda) of the Northeastern Pacific. Proc. Calif. Acad. Sci. 47: 47-94.

Information on the Internet

Title Illustrations
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Scientific Name Grimpoteuthis bathynectes
Reference Voss, G. L. and W. G. Pearcy. 1990. Deep-water octopods (Mollusca: Cephalopoda) of the Northeastern Pacific. Proc. Calif. Acad. Sci. 47: 47-94.
Sex Male
View Dorsal
Size 50 mm ML
Type Holotype
Copyright © 1990 G.L. Voss and W.G. Pearcy
About This Page


University of Hawaii, Honolulu, HI, USA


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

Page: Tree of Life Grimpoteuthis bathynectes Voss & Pearcy, 1990. 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.

Citing this page:

Young, Richard E. and Michael Vecchione. 2003. Grimpoteuthis bathynectes Voss & Pearcy, 1990. Version 13 May 2003 (under construction). http://tolweb.org/Grimpoteuthis_bathynectes/20118/2003.05.13 in The Tree of Life Web Project, http://tolweb.org/

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