This is an artificial pupal chamber for large insects such as Hercules beetles. It is sold with an artificial pupal chamber and a dedicated case. If you have purchased or are planning to purchase Hercules beetle larvae during summer vacation, we recommend purchasing this artificial pupal chamber. Please moisten it thoroughly before use. Thank you. Hercules hercules Hercules ecuatorianus Hercules paschoali Hercules occidentalis DH Hercules Hera Hera Oasis