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Abralia marisarabica Okutani 1983

Kotaro Tsuchiya
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Containing group: Abralia

Introduction

A. marisarabica is possibly the smallest-sized species in the genus. It is easily recognized by its small mature-size of less than 25mm DML, the small number of club hooks (usually 2), the longitudinal stripe photophore arrangement on the ventral mantle and head, and more than five, silvery eye photophores. This species is similar to A. fasciolata in the mantle photophore arrangement, buccal rappet connectives and eye photophores, but is easily distinguishable by its smaller mature size, and the smaller number of integumental photophores on the mantle.

Characteristics

  1. Tentacle clubs
    1. Two or three hooks on ventral side.
    2. Two rows of large suckers on dorsal side of manus.
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      Figure. Oral view of the tentacular club of A. marisarabica and insert of one manus sucker (arrow) showing dentition. Drawing from Okutani (1983).

  2. Hectocotylus
    1. Right ventral arm of male hectocotylized.
    2. Hectocotylus with two very different-sized flaps.
    3. Large proximal flap bilobed.
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    Figure. Dorsal-oral view of the hectocotylized right arm IV of A. marisarabica. Top - Drawing from Tsuchiya (2000). Bottom - Drawing from Okutani (1983).

  3. Eye Photophores
    1. Five silvery organs with three to five minute additional organs in between.
  4. Integumental Photophores
    1. Ventral mantle with six longitudinal stripes of integumental organs.
    2. Ventral head with seven longitudinal stripes of integumental organs; unpaired middle stripe with few organs.
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      Click on an image to view larger version & data in a new window

      Figure. Side view of A. marisarabica, male, paratype, showing photophore arrangement. Drawing from Okutani (1983).

  5. Buccal connectives.
    1. Buccal-support connectives attached to the dorsal side of Arms III (DDDD-type).

Distribution

Geographical distribution

This species is considered to be endemic to the oceanic waters of the Arabian Sea (Nesis and Nikitina 1988; Piatkowski and Welch, 1991).

References

Nesis, K.N. and Nikitina, 1988.

Piatkowski, U. and Welch,

Okutani, T. 1983. Abralia marisarabica, a new enoploteuthid squid from the Arabian Sea (Cephalopoda: Oegopsida). Bulletin of the National Science Museum, (series A)9(4):161-168

Title Illustrations
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Scientific Name Abralia marisarabica
Location Arabian Sea
Reference Okutani, T. 1983. Abralia marisarabica, a new enoploteuthid squid from the Arabian Sea (Cephalopoda: Oegopsida). Bulletin of the National Science Museum, (series A)9(4):161-168, 14 figures.
Sex Male
View Ventral
Size between 20 and 22 mm ML
Collection NSMT-Mo 31360
Type Paratype
Copyright © 1983 T. Okutani
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Tokyo University of Fisheries, Tokyo, Japan

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Citing this page:

Tsuchiya, Kotaro. 2013. Abralia marisarabica Okutani 1983. Version 03 November 2013 (under construction). http://tolweb.org/Abralia_marisarabica/19653/2013.11.03 in The Tree of Life Web Project, http://tolweb.org/

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