The wombat was spotted near Ben Chifley Dam this week, just one of the wombats suffering sarcoptic mange.

Spread by tiny mites that live in the burrows, the disease is decimating wombat populations not just here, but throughout Australia. 

Ecologist Ray Mjadwesch said yesterday he had seen a large number of affected wombats at Yetholme, in particular, but also Napolean Reef, Mount Horrible and Newnes. 

The Mr Mjadwesch said the disease was spreading rapidly, adding that sarcoptic mange was virtually unknown 20 years ago.

Mr Mjadwesch said the wombats suffer greatly, particularly in summer when their wounds tend to become fly blown. Their death is slow and painful. 

So widespread is the problem becoming, though, that a community information day about this terrible affliction is being planned for October 4 at Yetholme. 

Mr Mjadwesch said it is important that the community joins landholders in understanding this issue. 

Wombat Protection Society chairman David Alder will address the meeting, explaining how to recognise sick wombats and who to call, and explaining the treatments which are currently being trialled

Mr Mjadwesch said part of the problem with the spread of the disease was the wombat's very social nature.

While they have their favourite sleeping burrow, a wombat might visit up to 12 burrows in one night. 

Their social habits work to their detriment when it comes to the spread of mange because the mites get spread from burrow to burrow as the wombats move around. 

Sick wombats that are caught early can be treated, but this can take up to three months. Very sick wombats often need to be euthanised.  Mr Mjadwesch said if you come across a sick wombat a call should be made to WIRES Central West or another wildlife care organisation.