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Euastacus crassus Riek 1951

Keith A. Crandall
Containing group: Euastacus


Holotype, Australian Museum, Sydney P11937 (male); allotype, Australian Museum, Sydney P11938 (female); paratypes, Australian Museum, Sydney P11939-40 (5 male, 7 female/ 1 male, 1 female).

Type Locality

Australian Capital Territory, Small stream at Bendora.


The species is present in the Australian Capital Territory, especially in the high country west of Canberra, west of the Australian Capital Territory (e.g., near Brindabella), west of the Snowy Mountains and into the eastern semi-alpine country of Victoria as far as the Mount Beauty-Mount Hotham region. The range extends from north-east to south-west approximately 210 km. Drainage is via the Murrumbidgee, Murray and Victorian Murray tributaries (e.g., Mitta Mitta, Kiewa and Ovens Rivers.)


E. crassus was collected in 1981 at only two sites, one in the Brindabella Range near the type locality (altitude 1220 m), the other rather lower (640 m) east of Tom Groggin, near the New South Wales-Victorian border. Both sites were in largely granite areas, with dry sclerophyll and heath the dominant vegetation. Ferns were abundant along the banks near the type locality. It appears that that species has a patchy distribution in the Australian Capital Territory, occuring in high streams with relatively undisturbed vegetation. Extensive state forests east of Tumut also support populations of E. crassus. The Victorian localities are high (above 1000 m) and may be snow covered in winter.

Conservation Status

Category: EN (Endangered)
Criteria: B1+2c
Conservation Links:


Baillie, Jonathan, and Brian Groombridge. 1996. IUCN Red List of Threatened Animals.

Morgan, G. J. 1997. Freshwater Crayfish of the Genus Euastacus Clark (Decapoda: Parastacidae) from New South Wales, With a Key to all Species of the Genus. Records of the Australian Museum, supplement 23.

Riek, E. F. 1951. The freshwater crayfish (family Parastacidae) of Queensland. With an appendix describing other Australian species. Records of the Australian Museum 22: 368-388.

About This Page
Page constructed by Emily Browne.

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

Page: Tree of Life Euastacus crassus Riek 1951. 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 crassus Riek 1951. Version 01 January 2001 (under construction). http://tolweb.org/Euastacus_crassus/7913/2001.01.01 in The Tree of Life Web Project, http://tolweb.org/

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