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Opisthoteuthis bruuni Voss 1982

Richard E. Young and Michael Vecchione
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Containing group: Opisthoteuthis

Introduction

This species is known only from 16 juveniles (13-29 mm ML) taken in a single tow off Chile (Voss, 1982). It has not been reported since.

Characteristics

  1. Arms, web and suckers
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      Figure. Oral view of arms and web of O. bruuni. From Voss, 1982

    1. Thickened web present on ventral side of each arm near web margin.
    2. Web extends further on dorsal side of arms.
    3. Web formula inconsistent.
    4. Arms subequal.
    5. 27-35 suckers on each arm I, number increases with size.
    6. Male arm: small row of small suckers around mouth, following 2-3 suckers increase in size, then 3 gigantic suckers, then small to about sucker 17 (near web margin) where 3-4 suckers somewhat enlarged, distally 7-8 suckers gradually decrease in size to tip.
    7. Female arm: Sucker size gradually increases then decreases; proximal suckers largest.
    8. Length of cirri less than diameter of largest suckers.

Comments

This description is taken from Voss, 1982. More details of the description of O. bruuni can be found here.

O. bruuni shares (where males are known) enlarged suckers in both proximal and distal fields that are the same on all arms with O. agassizii, O. chathamensis, O. grimaldii and O. hardyi. It differs from all of these species in the number of suckers in the distal field (2-3 vs 6-14); however, the specimens are not mature.

Nomenclature

This species was originally placed in the genus Grimpoteuthis.

Life History

The smallest know specimen is 13 mm in ML (drawing below). The enlarged suckers of the proximal field are present at this size. The enlarged suckers of the distal field, however, are not present until 18-23 mm ML.

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Figure. Dorsal view of O. bruuni, paratype, 13 mm ML. Drawing from Voss, 1982.

Distribution

O. bruuni is known only from the type locality at 23°41'S, 70°34'W in the southeastern Pacific off Antofagasta, Chile.

References

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

Title Illustrations
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Scientific Name Opisthoteuthis bruuni
Reference Voss, G. L. 1982. Grimpoteuthis bruuni, a new species of finned octopod (Octopoda: Cirrata) from the Southeastern Pacific. Bulletin of Marine Science 32: 426-433.
Sex Male
View ventral and dorsal
Size 29 mm ML
Type Holotype
Copyright © 1982 Bulletin of Marine Science
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 Voss 1982. 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. Opisthoteuthis bruuni Voss 1982. Version 13 May 2003 (under construction). http://tolweb.org/Opisthoteuthis_bruuni/20153/2003.05.13 in The Tree of Life Web Project, http://tolweb.org/

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