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Euastacus armatus von_Martens 1866

Murray River Cray

Keith A. Crandall
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Containing group: Euastacus


Holotype, Zoologisches Museum, Berlin.

Type Locality

Murray River.


The species occurs in the Murray River throughout most of its length and major tributaries in Victoria (including the Goulburn, Yea, Murrundindi, Jamieson, Howqua, Ovens and Mitta Mitta Rivers) and New South Wales (including the Murrumbidgee, Cotter and Macquarie Rivers). The range extends over 800 km east-west. The most northerly known site of the species is near Kandos 160 km west of Newcastle, NSW. Presumably the creek flows into the Cudgegong and thence Macquarie and Darling Rivers. This site indicates a north-south range of approximately 450 km.


Euastacus armatus inhabits large and small streams in a variety of habitats including cleared pasture and dry and wet sclerophyll forests (vegetation usually densest along upper reaches of streams) at altitudes from close to sea level to over 700m a.s.l.

Conservation Status

Low elevations may be depopulated with possible extinction of the species in South Australia (Kaires, 1980; Zeidler, 1982).

Other Names for Euastacus armatus von_Martens 1866


Crandall, Keith A., James W. Fetzner, Jr., Carlos G. Jara, and Ludwig Buckup. 2000. On the Phylogenetic Positioning of the South American Freshwater Crayfish Genera (Decapoda: Parastacidae). Journal of Crustacean Biology, 20(3): 530-540.

Kaires, R. 1980. Observation on the physiology of the freshwater crayfish Euastacus armatus and Cherax destructor. Aust. Soc. Limnol. Newsl. 18:13.

Morgan, G. J. 1986. Freshwater crayfish of the genus Euastacus (Decapoda: Parastacidae) from Victoria. Memoirs of the Museum of Victoria 47(1): 1-57.

von Martens E. 1866. On a new species of Astacus. Ann. Mag. nat. Hist. (3) 17: 359-60.

Zeidler, W. 1982. South Australian freshwater crayfish. S. Aust. Nat. 56: 36-43.

Title Illustrations
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Euastacus armatus (von Martens)
Photo copyright © 1998 Keith A. Crandall

Copyright © Keith A. Crandall
About This Page
Page constructed by Emily Browne.

Keith A. Crandall
Brigham Young University, Provo, Utah, USA

Page: Tree of Life Euastacus armatus von_Martens 1866. Murray River Cray. Authored by Keith A. Crandall. The TEXT of this page is licensed under the Creative Commons Attribution-NonCommercial-ShareAlike 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:

Crandall, Keith A. 2001. Euastacus armatus von_Martens 1866. Murray River Cray. Version 01 January 2001 (under construction). http://tolweb.org/Euastacus_armatus/7904/2001.01.01 in The Tree of Life Web Project, http://tolweb.org/

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