The E. serranus comes from the Pantanal region in South America and is a very wet area. The seem to do well with lower humidity. These breed fast and make a great feeder for anything that eats insects. Especially those that like a challenge. They are quite feisty and very meaty and do not have that nasty defensive smell that the popular orange heads have. These are also very useful for home composting, just add any fruits, veggie or table scraps and watch them disappear. This keeps raw garbage out of the landfills and the frass (poo) is a fertilizer that is ready to go, no need for composting and it can be used on house plants or in the garden. A very versatile insect indeed.