Under Construction

Sepietta Naef, 1912

Giambattista Bello, Michael Vecchione, and Richard E. Young
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Containing group: Sepiolinae

Introduction

Diagnosis

A sepiolin ...

Characteristics

  1. Arms
    1. Arm suckers in two series.
    2. Hectocotylus with 3-4 basal suckers followed by a copulatory apparatus with 4 modified stalks fused at their base to form a transverse crest, the lateral-most stalk hook-shaped; distally arm with spoon-like widening.
    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 arms I of species of Sepietta, mature males. Left - S. obscura. Middle - S. oweniana. Right - S. neglecta. Drawings from Naef (1923).

  2. Tentacles
    1. Tentacular club with suckers in 12-32 series.

  3. Photophores
    1. Photophores absent.

  4. Gladius
    1. Gladius weakly developed ("... a very delicate, colorless thread ... which is difficult to find." Naef, 1923.)

  5. Female bursa copulatrix
    1. Bursa copulatrix roughly ear-shaped, devoid of cover.

Discussion of Phylogenetic Relationships

Sepietta oweniana and S. neglecta are considered sister species (Bello, 1998).

Distribution

Eastern Atlantic Ocean from the Barents Sea to Mauritania and the Mediterranean Sea. They are found at depths from a few to more than 1,000 m (Bello, 2019).

References

Bello, G. 1998. Cladistic analysis of the Atlanto-Mediterranean sepiolines (Cephalopoda: Sepiolidae) based on morphological characters. Memorie del Museo Civico di Storia Naturale di Verona (2a ser.). Sezione Scienze della Vita, 13: 81-85.

Bello, G. 2019. The Mediterranean Sepiolidae (Mollusca Cephalopoda) diversity. Biodiversity Journal, 10: 389-404.

Naef, A. 1923. Die Cephalopoden. Fauna und Flora des Golfes von Neapel, 35(1, 1): 1-863.

Title Illustrations
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Click on an image to view larger version & data in a new window
Scientific Name Sepietta oweniana
Location Mediterranean Sea
Reference Naef, A. 1923. Die Cephalopoden. Fauna und Flora des Golfes von Neapel, 35(1, 1): 1-863.
Life Cycle Stage Adult
View Dorsal
Size 27 mm, 29 mm ML
About This Page


Retired, Mola di Bari, Italy


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


University of Hawaii, Honolulu, HI, USA

Correspondence regarding this page should be directed to Giambattista Bello at

Page: Tree of Life Sepietta Naef, 1912. Authored by Giambattista Bello, Michael Vecchione, 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.

Citing this page:

Bello, Giambattista, Michael Vecchione, and Richard E. Young. 2020. Sepietta Naef, 1912. Version 27 March 2020 (under construction). http://tolweb.org/Sepietta/20041/2020.03.27 in The Tree of Life Web Project, http://tolweb.org/

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