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Note

Iridoteuthis sp. A: Arms

Richard E. Young, Caroline Sanchez, and Valerie Allain

This page shows additional views of the arms of both the male and female. Most arms have been stained with methylene blue stain to enhance detail.

Male: 

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Figure. Ventral views of arms I of Iridoteuthis sp. A, mature male. Left - Right arm I with some of the membrane/mucous intact. Middle - Right arm I with much of membrane/mucous removed. Note that there appears to be no modification of the suckers. Right - Left arm I with much less membrane of the dorsal margin. Photographs by R. young.

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Click on an image to view larger version & data in a new window

Figure. Oral views of arms II-IV of Iridoteuthis sp. A, mature male. Left - Arm III, most of arm; compare with adjacent image to see arm base. Note large aboral flag. Middle - Arm II. Arms II and III appear to have normal biserial sucker arrangement. Right top - Tip of arm IV showing irregular arrangement of multiple sucker series. Right bottom - Bases of arms III and IV showing absence of basal papillae. Photographs by R. Young.

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Click on an image to view larger version & data in a new window

Figure. Lateral view of the extreme tip of arm II of Iridoteuthis sp. A, male, showing the elongate, cyclindrical sucker bases (arrows). Photograph by R. Young.

 

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Click on an image to view larger version & data in a new window

Figure. Two aboral views of a twisted arm IV of Iridoteuthis sp. A, male, showing where the lateral membrane appears to become more muscular. Photographs by R. Young.

Female

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Click on an image to view larger version & data in a new window

Figure. Oral views of arms I of Iridoteuthis sp. A, female. On the left arm, the arrows point to the last four suckers prior to the bare tip. On the right arm, the single arrow points to either the last normal sucker or an aborative sucker prior to the bare tip. Photograph by R. Young.

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. Oral views of arms III and II of Iridoteuthis sp. A,female. Left - Arm III. Note that suckers terminate well proximal to the arm tip. Note also the papillate arm base and the large, distal aboral flag. Middle top - Tip of the same arm III with slightly altered view. Middle bottom - Enlarged view of same arm tip. Note that the structure appears to be complex with perhaps transverse ridges. Exact structure could not be determined. Right - Arm II showing biserial sucker arrangement throughout. Photographs by R. Young.

About This Page


University of Hawaii, Honolulu, HI, USA


Secretariat of the Pacific Community


Secretariat of the Pacific Community, Noumea, New Caledonia

Correspondence regarding this page should be directed to Valerie Allain at

Page: Tree of Life Iridoteuthis sp. A: Arms Authored by Richard E. Young, Caroline Sanchez, and Valerie Allain. 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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Iridoteuthis sp. A

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