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Engaeus orramakunna Horwitz 1990

Mount Arthur Burrowing Crayfish

Keith A. Crandall
Containing group: Engaeus


Holotype, Tasmanian Museum and Art Gallery, Hobart G3222 (Male); allotype, Tasmanian Museum and Art Gallery, Hobart G3223 (Female); paratypes, Tasmanian Museum and Art Gallery, Hobart G3224 (Female), G3225 (Intersexed), Museum of Victoria, Melbourne J14727 (Male), J14728 (Female).

Type Locality

Tributary of Pipers River on Lilydale Road, about 3 km south of Lilydale, northeast Tasmania.


At both sites from which the species was collected, the vegetation was wet sclerophyll and contained the species Eucalyptus obliqua, Acacia dealbata, A. melanoxylon, and Dicksonia antarctica. The soils at the type locality were varied and appeared to influence the type of burrow constructed. For instance by the bank of the creek where the soils were light orange in color and contained a light clay but heavy silt content, large burrow systems could be detected from the surface by the numerous small openings; these openings converged on larger tunnels which themselves converged on huge water-filled chambers at the creek level (and which contained in excess of 10-15 liters of water). At a greater distance from the creek where the soils contained a grey clay and a sand component, the burrows had several large openings giving rise to tunnels which ramified both horizontally and vertically; one of the vertical tunnels could be enlarged to form a chamber above the water-table level. This information suggests that this species is capable of constructing burrows in both type 2 and 3 habitats.

Conservation Status

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

Other Names for Engaeus orramakunna Horwitz 1990


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

Horwitz, Pierre. 1990. A Taxonomic Revision of Species in the Freshwater Crayfish Genus Engaeus Erichson (Decapoda: Parastacidae). Invertebr. Taxon., 1990, 4, 427-614.

About This Page
Page constructed by Emily Browne.

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

Page: Tree of Life Engaeus orramakunna Horwitz 1990. Mount Arthur Burrowing Crayfish. 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. Engaeus orramakunna Horwitz 1990. Mount Arthur Burrowing Crayfish. Version 01 January 2001 (under construction). http://tolweb.org/Engaeus_orramakunna/7842/2001.01.01 in The Tree of Life Web Project, http://tolweb.org/

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