Madagascar Hissing Roaches

(Gromphadorhina portentosa), also known as Madagascar hissing roach, is a top beginner roach. Averaging 2-3 inches, males can get as big as 4! They don't have wings, but are excellent climbers, and can even walk on glass. So make sure to key them in an enclosure with a tight lid to ensure they do not escape or provie a layer of petroleum jelly or food grade grease. 
They will enjoy humidty between 50-70% and do prefer a nice damp substrate. 
You will get nice size adults averaging around 2 inches.