Under Construction

Engaeus nulloporius

Keith A. Crandall
Containing group: Engaeus


Holotype, Tasmanian Museum and Art Gallery, Hobart G3219 (male); allotype, Tasmanian Museum and Art Gallery, Hobart G3220 (female); paratypes, Tasmanian Museum and Art Gallery, Hobart G3221 (male), Museum of Victoria, Melbourne J14723 (male), J14724 (female).

Type Locality

In partly cleared tea-tree swamp, 1.5 km south of 3-way corner (Frankford, Glengarry, Birralee) of road, north Tasmania.


E. nulloporius can be found in the central northern region of Tasmania. Collections in the Queen Victoria Museum come from the suburbs of Launceston, including St. Leonards on the eastern side of the Tamar River, and these specimens represent the eastern most extension of its known range. It appears to be most abundant in the Meander River region between Deloraine and Launceston.


The species can be found in burrows in the banks of creeks and in swamps where the vegetation is characteristically dry sclerophyll in nature, frequently with an abundance of tea tree (Melaleuca spp. and Leptospermum spp.). The soils typically have a heavy clay component, particularly in the region of the Meander River where the clays are yellow. The openings of burrows can be below the water level, particularly when the water-table is high; as such this species occupies both type 1b and 2 burrow habitats.

Conservation Status

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


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 nulloporius. 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 nulloporius. Version 01 January 2001 (under construction). http://tolweb.org/Engaeus_nulloporius/7840/2001.01.01 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

Engaeus nulloporius

Page Content

articles & notes



Explore Other Groups

random page

  go to the Tree of Life home page