Ghost slug. Photo: Amgueddfa Cymru - National Museum Wales

Ghost slug

Unknown to science before 2006, the mysterious ghost slug (Selenochlamys ysbrada) was first discovered in a Caerphilly Lane. In May 2009 it was named as one of the 'top new species described' in 2008 by the International Institute for Species Exploration.

A Cardiff gardener found a specimen in 2007. Other examples have been found around Swansea.

The ghost slug is carniverous and nocturnal, sucking earthworms into its body with blade-like teeth. Although similar species exist in eastern Europe, the Welsh examlpes have been classified as a wholly new species, being given the name ysbryda from the Welsh for ghost.

The ancestor individuals' route to Wales can only be speculated on, but Bill Symondson of Cardiff University believes they may have come in on pot plants.

Spending most of its time underground, it squeezes its flexible body into cracks or tunnels to get at earthworms, which it detects by smell or taste.

The slug population is being monitored in case it becomes a pest species.

If you have pictures of this amazing animal, don't forget you can submit them to our BBC Wales Nature Flickr group.

Photo courtesy of Amgueddfa Cymru - National Museum Wales.

Weatherman walks

Derek Brockway

Have a go

Try one of the walks from Derek's latest walking series on BBC One Wales.


Toads by Brian Stone

In your garden

Find out about the wildlife you can find on your doorstep.

Weird wildlife

A fin whale

Wildlife photos

A gallery featuring rare and unusual wildlife sightings in Wales.

Wildlife map of Wales

BBC Wales Nature map

Explore Wales

Zoom in and discover wildlife in your area with our interactive map.

BBC © 2014 The BBC is not responsible for the content of external sites. Read more.

This page is best viewed in an up-to-date web browser with style sheets (CSS) enabled. While you will be able to view the content of this page in your current browser, you will not be able to get the full visual experience. Please consider upgrading your browser software or enabling style sheets (CSS) if you are able to do so.