A small red and black spider, built as a 8066 alternate.  Possibly Ambicodamus southwelli, but I've never been to Tasmania.  So I can't say for sure… 

Brickshelf:  http://www.brickshelf.com/cgi-bin/gallery.cgi
Flicker:  http://www.flickr.com/photos/arcanemettles/

Tags: 

Lego 
Technic 
MOC
Spider
Arachnid
Nicodamidae
Ambicodamus 
southwelli
Alternate 
8066
Black
Red 
Bley