Megaloblatta is a genus of cockroaches in the family Ectobiidae. It includes the largest living species of cockroach, , which can grow to 9.7 centimetres (3.8 in) in length and have a wingspan of up to 20 centimetres (7.9 in). Megalobatta, like many other insects, use stridulation in order to steer their prey away. The stridulating insects are less likely to be preyed upon in comparison to individuals of the species with an inability to stridulate.