A bagmoth is a species of moth, also known as the bagworm.
A bagworm is a species of moth, also known as the bagmoth.
If the bug/insect does not have legs, it's likely to be a bagmoth. The range around 60 mm long, and the adult wingspan is 30 m. They are a New Zealand native, so that's where they live. If this isn't the insect/bug you were looking for, check the related links below to see a wider variety of possibilities.