Blaberus is a genus of cockroaches generally found in South America. About 10 species are in the Blaberus genus, and they are popular among hobbyists as feed for other arthropods (Blaberus discoidalis in particular serves this function) or as pets. Unlike several genera of cockroaches considered to be pests, this genus keeps its ootheca in its abdomen until the time it hatches. They generally require a relative humidity of 60% or higher to thrive and temperatures above 25°C (28-30°C is best) to reproduce.
B. giganteus is one of the world's longest roaches. B. craniifer's popular name, "death's head roach" is often attributed to B. discoidalis, as well.