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Sepiadariidae Fischer, 1882

Richard E. Young
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This family has two genera with the following eight species:
taxon links [down<--]Sepiolida Interpreting the tree
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Containing group: Sepiolida


Species of the Sepiadariidae are short (2 - 4 cm ML), broad cephalopods with a rounded posterior mantle. They are benthic, may have striking fixed color patterns, and inhabit shallow waters of tropical and subtropical seas of the Indo-West Pacific.

Brief diagnosis:

A Sepiolida ...


  1. Arms
    1. Left arm IV hectocotylized.

  2. Head
    1. Beaks: Descriptions can be found here: Lower beak; upper beak.

  3. Funnel
    1. Funnel locking-apparatus with two depressions (Sepioloidea) or fused (Sepiadarium).
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      Figure. Left - Ventral view of the funnel locking-apparatus of Sepioloidea pacifica, 12 mm ML, 43°S, 167°E. Right - Ventral view of the funnel base with the mantle  reflected backward showing the strong fusion of the funnel locking-apparatus (arrow) of Sepiadarium sp. Photographs by R. Young.

  4. Mantle
    1. Dorsal margin fused to head.

  5. Shell
    1. Shell absent.


A list of all nominal genera and species in the Sepiadariidae can be found here. The list includes the current status and type species of all genera, and the current status, type repository and type locality of all species and all pertinent references.


Lu, C. C., A. Guerra, F. Palumbo and W. C. Summers. 1992. Order Sepioidea Naef, 1916. In: Sweeney, M. J., C. F. E. Roper, K. M. Mangold, M. R. Clarke and S. V. Boletzky (eds.). "Larval" and juvenile cephalopods: a manual for their identification. Smithson. Contr. Zool. No. 513: 1-282.

Title Illustrations
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Scientific Name Sepioloidea lineolata
Location off south Australia
Copyright © 1998 Mark Norman
Scientific Name Sepiadarium austrinum
Location off south Australia
About This Page

University of Hawaii, Honolulu, HI, USA

Page: Tree of Life Sepiadariidae Fischer, 1882. Authored by 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:

Young, Richard E. 2010. Sepiadariidae Fischer, 1882. Version 15 August 2010 (under construction). http://tolweb.org/Sepiadariidae/19986/2010.08.15 in The Tree of Life Web Project, http://tolweb.org/

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