Promachoteuthis sp. DRichard E. Young and Michael Vecchione
IntroductionPromachoteuthis sp. D is known from a single incomplete specimen.
- with nuchal fusion between head and mantle.
- with mostly 2 series of suckers on arms..
- with tentacle at base narrower than arm III base.
- Arms and tentacles
- Arm suckers mostly in two series but tend toward three series in mid-arm.
- Tentacles missing due to damage; remaining stubs about 75% as thick as bases of arms III.
- Head fused to mantle in nuchal region.
- Beaks, buccal mass very large (length about 6.5 mm). Beak descriptions can be found here: Lower beak; upper beak.
CommentsMore details of the description can be found here.
Unfortunately the specimen is not in good condition. Previous investigators cut open the mantle then partially dissected the squid prior to fixation and, subsequently, the gladius was removed. In addition, the tentacles are missing. In spite of these problems, this is a very distinctive species. Considerable shrinkage has occurred which overemphasizes the size of the buccal mass (see Measurements and counts).
Ovary and nidamental glands had been removed by an earlier investigator and placed in a separate vial. The vial contains mostly large, free, equally-sized, mature eggs (ca. 170 eggs at 1.8 mm x 1.5 mm) with very few intermediate size and a small number of small oocytes still attached to the ovarian strands. The photograph on the right shows
Type locality: 16°35'E, 34°15'S in the south Atlantic Ocean. Captured from the WALTHER HERWIG at 1550 m depth.
About This Page
University of Hawaii, Honolulu, HI, USA
National Museum of Natural History, Washington, D. C. , USA
Page copyright © 2016 and
Page: Tree of Life Promachoteuthis sp. D. 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. Promachoteuthis sp. D. Version 01 January 2003 (under construction). http://tolweb.org/Promachoteuthis_sp._D/19532/2003.01.01 in The Tree of Life Web Project, http://tolweb.org/