This fantastically spiky stick insect is a juvenile male Haaniella muelleri, sometimes also known as Haaniella erringtoniae, from the rainforests of West Malaysia.
In my opinion this is one of the most beautiful and remarkable looking of all the stick insect species in my collection, their spines are absolutely amazing. As in many stick insect species the females look very different to the males but in the case of this species they are equally as beautiful in a lovely mottled pattern of brown and white/cream:
The sharp spines on these stick insects are undoubtedly used to protect them from predators. Whilst I was on my trip of a lifetime to Costa Rica in December 2013 I encountered many more animals which use similar types of spines to protect themselves from predators, these two species of spider being my favourites of them: