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Onykia loennbergii (Ishikawa and Wakiya 1914)

Michael Vecchione, Richard E. Young, Kotaro Tsuchiya, and K.S.R. Bolstad
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Containing group: Onykia

Introduction

O. loennbergii is one of two species of Onykia known to occur in the high North Pacific (the other is O. robusta). O. loennbergii is the smaller of the two species reaching a length of 307 mm ML (Tsuchiya and Okutani, 1991).

Diagnosis

An Onykia ...

Characteristics

  1. Tentacles
    1. Club with 25 hooks
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    Figure. Oral view of tentacular club of O. loennbergii, 215 mm ML, Suruga Bay, Japan. Drawing from Kubodera et al., 1998.

  2. Mantle
    1. Dermis of mantle with short longitudinal ridges and warts.
  3. Fins
    1. Fins with rhomboidal shape but drawn out somewhat into short tail.
    2. Width 50-55% of ML.
  4. Gladius
    1. Gladius with long rostrum; triangular in cross-section.

Comments

The above description is taken from Kubodera et al. (1998). This species is very similar to O. robsoni. They differ in the cross-sectional shape of the rostrum (triangular vs oval) and the the form of the dermal skin pads (short, narrow, fusing with one another vs long and wide) (Nesis 1982/87). Sasaki (1929) describes the warts as follows: "Warts on mantle wrinkle-like, running lengthwise, anastomosing one another by oblique branches. They measure 0.3-0.8 mm in breadth, distant from one another as far as their own breadth."

Additional features of the description are found here.

Nomenclature

This species was named for Einar Lönnberg, and the original spelling was given as lönnbergii.  Following ICZN Article 32.5.2.1, the correct modern spelling is therefore loennbergii.

Life History

An apparently mature male with penis protruding from the funnel was reported in a 307 mm ML squid (Tsuchiya and Okutani, 1991).

Distribution

Type locality is the beach of Sagami Bay, Japan. The squid was assumed to have been discarded by fishermen (Kubodera, et al., 1998). O. loennbergii is found in the western North Pacific and the Indian Ocean (Saya-de-Malha Bank) (Kubodera, et al., 1998).

Other Names for Onykia loennbergii (Ishikawa and Wakiya 1914)

References

Nesis, K. N. 1982/87. Abridged key to the cephalopod mollusks of the world's ocean. 385+ii pp. Light and Food Industry Publishing House, Moscow. (In Russian.). Translated into English by B. S. Levitov, ed. by L. A. Burgess (1987), Cephalopods of the world. T. F. H. Publications, Neptune City, NJ, 351pp.

Kubodera, T., U. Piatkowski, T. Okutani and M.R. Clarke. 1998. Taxonomy and Zoogeography of the Family Onychoteuthidae (Cephalopoda: Oegopsida). Smithsonian Contributions to Zoology, No. 586: 277-291.

Sasaki, M. 1929. A monograph of the dibranchiate cephalopods of the Japanese and adjacent waters. Journal of the College of Agriculture, Hokkaido Imperial University, 20(Supplementary number):1-357.

Tsuchiya, K., and T. Okutani. 1991. Growth Stages of Moroteuthis robusta (Verrill, 1881) with the Re-evaluation of the Genus. Bulletin of Marine Science, 49(1/2):137-147.

Title Illustrations
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Scientific Name Onykia (Onykia) loennbergii
Location Suruga Bay, Japan
Reference Kubodera, T., U. Piatkowski, T. Okutani and M.R. Clarke. 1998. Taxonomy and Zoogeography of the Family Onychoteuthidae (Cephalopoda: Oegopsida). Smithsonian Contributions to Zoology, No. 586: 277-291.
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Size 215 mm ML
Image Use creative commons This media file is licensed under the Creative Commons Attribution-NonCommercial License - Version 3.0.
Copyright © 1998
About This Page


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


University of Hawaii, Honolulu, HI, USA


Tokyo University of Fisheries, Tokyo, Japan


EOS Research Institute, Auckland University of Technology, New Zealand

Correspondence regarding this page should be directed to K.S.R. Bolstad at

Page: Tree of Life Onykia loennbergii (Ishikawa and Wakiya 1914). Authored by Michael Vecchione, Richard E. Young, Kotaro Tsuchiya, and K.S.R. Bolstad. 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:

Vecchione, Michael, Richard E. Young, Kotaro Tsuchiya, and K.S.R. Bolstad. 2007. Onykia loennbergii (Ishikawa and Wakiya 1914). Version 09 July 2007 (under construction). http://tolweb.org/Onykia_loennbergii/19974/2007.07.09 in The Tree of Life Web Project, http://tolweb.org/

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