Under Construction

Euastacus simplex Riek 1956

Keith A. Crandall
Containing group: Euastacus


Holotype, Australian Museum, Sydney P13048 (male); allotype, Australian Museum, Sydney P34090 (female); paratype, Australian Museum, Sydney P34091 (female).

Type Locality

New South Wales, 15 miles north of Armidale.


The species ranges from 25 km west of Dorrigo, 90 km to the Armidale and Guyra areas of New South Wales and one specimen from near Yarrowitch indicates the species extends south along the Botumbulla Range for a similar distance. Major drainage systems include the Nymboida, Styx and Guy Fawkes Rivers in the north and the Hastings River in the south.


E. simplex has been collected from small to medium sized, open streams with banks vegetated by dry sclerophyll forest and heath or largely cleared for pasture at elevations between 1100 m and 1380 m a.s.l. Though water was clear and usually cool, brown algal growth was often moderately heavy in open streams.


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. 1956. Additions to the Australian freshwater crayfish. Records of the Australian Museum 24: 1-6.

About This Page
Page constructed by Emily Browne.

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

Page: Tree of Life Euastacus simplex Riek 1956. 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 simplex Riek 1956. Version 01 January 2001 (under construction). http://tolweb.org/Euastacus_simplex/7935/2001.01.01 in The Tree of Life Web Project, http://tolweb.org/

edit this page
close box

This page is a Tree of Life Leaf Page.

Each ToL leaf page provides a synopsis of the characteristics of a group of organisms representing a leaf at the tip of the Tree of Life. The major distinction between a leaf and a branch of the Tree of Life is that a leaf cannot generally be further subdivided into subgroups representing distinct genetic lineages.

For a more detailed explanation of the different ToL page types, have a look at the Structure of the Tree of Life page.

close box

Euastacus simplex

Page Content

articles & notes



Explore Other Groups

random page

  go to the Tree of Life home page