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Freshwater Crayfish 21(1): 185-197 (2015)


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Re-description of the Orbost spiny crayfish, Euastacus diversus Riek 1969 (Decapoda: Parastacidae), in eastern Victoria, Australia

Coughran J, McCormack RB and Fetzner Jr. JW  e-mail link

Published Online: 12/31/2015


We present a thorough redescription of the endangered freshwater crayfish Euastacus diversus Riek, based on morphological and genetic analyses of newly collected material from eastern Victoria, Australia. The species displays a remarkably diverse morphology, particularly regarding the two key features previously used in its diagnosis: spination of the antennal squame and thorax. Genetic variation is also evident between populations, although this does not correlate with morphological variation. The distribution of the species is extended to 19 sites in the Brodribb, Yalmy, Rodger and Bonang River drainages at elevations ranging from 350 – 950 m a.s.l., with an overall Extent of Occurrence of 465 km2. To accommodate the revised taxonomy of this species, and to facilitate conservation and management efforts, we provide a key to this and similar species in Victoria.

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How to Cite

Coughran J, McCormack RB and Fetzner Jr. JW. (2015). Re-description of the Orbost spiny crayfish, Euastacus diversus Riek 1969 (Decapoda: Parastacidae), in eastern Victoria, Australia. Freshwater Crayfish 21(1):185-197. doi: 10.5869/fc.2015.v21-1.185



Author Information

Jason  Coughran,* Faculty of Mathematics, Physical Sciences and Life Sciences, Sheridan College, Unit 18, 7 Aberdeen Street, Perth, Western Australia, Australia6000. E-mail:

Robert B. McCormack, Australian Crayfish Project, Australian Aquatic Biological Pty Ltd, P.O. Box 3, Karuah, New South Wales, Australia2324. E-mail:

James W. Fetzner Jr.. , Section of Invertebrate Zoology, Carnegie Museum of Natural History, 4400 Forbes Avenue , Pittsburgh, PA , USA15213-4080. E-mail: FetznerJ@CarnegieMNH.Org

Corresponding Author indicated by an *.


Publication History

   Manuscript Submitted: 4/28/2015

   Manuscript Accepted: 9/9/2015

   Published Online: 12/31/2015

   Published in Print: 12/31/2015



Funding Information

No specific funding statement is available for this article.






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