Note

Chtenopteryx canariensis Description Continued

Mario Alejandro Salcedo-Vargas and Richard E. Young
  1. Arms
    1. Arm formula: IV=II>I=III.
    2. Arm IV 50% of ML.
    3. Suckers of arms I-III in 2 series proximally and up to 8-10 series in mid-arm portion (photograph on right).
    4. Arms II suckers in up to 12-14 series in distally portion.
      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.Scanning electron micrograph (SEM) of the mid-region of arm I, paratype, immature female, 55 mm ML.

       

    5. Inner sucker rings with 5-6 blunt, rounded teeth (photograph below, left).
    6. Outer sucker rings with 3 concentric rings of polygonal plates surrounded by a ring of smaller and more narrow plates (photographs below).
      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
      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. Left - SEM of arm sucker, paratype, immature female, 55 mm ML. Right - Same sucker, higher magnification. Bar = 10 microns.

     

  2. Tentacular club
    1. Club with six sucker in transverse row at proximal end, 16-20 suckers at mid-club, then decreasing number of suckers toward tip.
    2. Club length 30% of ML.
    3. Club slightly expanded.
      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 view of middle region of club, SEM, 55 mm ML. Bar = 300 microns.

       

    4. Inner sucker ring with about 9 blunt, rounded teeth.
    5. Outer ring with two concentric rings composed of elongate polygonal plates.
      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
      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. Left - Oral view of club sucker, 55 mm ML; bar = 30 microns. Right - Same club sucker, enlarged; bar = 10 microns.

     

  3. Buccal crown
    1. 16-18 suckers, in 2-3 series, on each buccal support.
  4. Mantle
    1. Width 43% of ML.
  5. Occipital region
    1. Occipital crest prominent.
    2. 3 occipital folds present.
    3. Olfactory organ at base of Occipital fold I.
  6. Fins
    1. Fin length about 97% of lateral ML at 12 mm ML and 99% at larger sizes.
    2. Width across fins and mantle about 95% of ML.
    3. Length of longest fin ribs: 31-40% of ML.
    4. Each fin with 28 muscular ribs.

      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 fins and mantle, holotype.
  7. Gladius
    1. Free rhachis 44% of ML.
    2. Gladius with broad conus.

      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. Ventral view of gladius of holotype. Scale bar is 10 mm.
  8. Spermatophore
    1. Drawing is a spermatophore of the holotype and an enlargement of the ejaculatory apparatus.

      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

  9. Measurements

  10. Squid ZMH 2778 ZMH 2780a ZMH 2779 ZMH 2780b
    Sex Imm. M. Imm. M. Imm. F. Juvnile
    ML, mm 65 63 55 12
    MW, %ML 43.8 31.7 43.6 58.3
    Fin L, %Lat. ML 97.6 95 96.8 97.9
    Fin W, %ML 107.6 - 109 250
    Arm I, %ML 47.6 44.4 52.7 45.8
    Arm II, %ML 36.9 47.6 60.9 58.3
    Arm III, %ML 47.6 49.2 47.2 50
    Arm IV, %ML 36.9 44.6 58.1 56
    Club L, %ML 30 - 32 29
    Fin Rib L, %ML 38 - 40 31
    Gladius W, %ML 18.5 18.1 - -

    Table of measurements modified from Salcedo-Vargas and Guerrero-Kommritz, 2000.

About this page

Most illustrations are from Salcedo-Vargas and Guerrero-Kommritz, 2000. The photographs showing portions of the arm and club suckers are slightly different from photographs seen in the type description. Photographs were taken by M. A. Salcedo-Vargas.

References

Salcedo-Vargas, M. A. and J. Guerrero-Kommritz. 2000. Three new cephalopods from the Atlantic Ocean. Mitt. Hamb. Zool. Mus. Inst., 97: 31-44.

About This Page


Universidad Nacional Autónoma de México


University of Hawaii, Honolulu, HI, USA

Page: Tree of Life Chtenopteryx canariensis Description Continued Authored by Mario Alejandro Salcedo-Vargas and Richard E. Young. 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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