In Pictures: Borneo's wildlife unveiled

This lungless frog (Barbourula kalimantanensis) is one of 123 new species recently discovered in Borneo. The island's rich wildlife is highlighted in a report from conservation group WWF.

Perhaps the oddest find is this stick insect (Phobaeticus chani). Growing up to half a metre long, it is the world's longest insect. Only three have ever been found.

The countries with Bornean territory - Brunei, Indonesia and Malaysia - agreed in 2007 to prioritise biodiversity in the Heart of Borneo region. This eight-banded barb (Eirmotus insignis) is one of 17 new fish found there.

If you spotted this frog (Rhacophorus penanorum) by day, it would sport this brown coloured body. But if you caught it at night...

... you would probably mistake it for a different species, as it changes colour dramatically. It can also glide for distances up to 15m between trees, owing to fully webbed feet and skin flaps.

Kopstein's Bronzeback snake (Dendrelaphis kopsteini) is a handsome and aggressive 1.5m beast that can flare its neck when riled, revealing bright orange colours.

The males of this long-tailed slug (Ibycus rachelae) make "love darts" from calcium minerals, and use them to inject hormones into females. Who said slugs had no romance?