Males are much smaller than the females and brown in colour so when selecting the colour, this only applies to the female. The males are always a mottled brown colour.
A large, long lived species which can live for up to 2 years. They can be handled but this must be done with care as they are quite prickly
Food plant - Bramble, Dog Rose and Ivy (Ivy should be used sparingly - not as the main diet)
Egg to Adult - 12 months
Adult females can live for up to 12 months whereas males can live for up to 4 months