<P> Nocticolidae (Cave cockroaches, etc) </P> <Tr> <Td> </Td> <Td> <P> Mantodea (Mantises) </P> </Td> </Tr> <P> Mantodea (Mantises) </P> <P> Termites were previously regarded as a separate order Isoptera to cockroaches . However, recent genetic evidence strongly suggests that they evolved directly from' true' cockroaches, and many authors now place them as an "epifamily" of Blattodea . This evidence supported a hypothesis suggested in 1934 that termites are closely related to the wood - eating cockroaches (genus Cryptocercus). This hypothesis was originally based on similarity of the symbiotic gut flagellates in termites regarded as living fossils and wood - eating cockroaches . Additional evidence emerged when F. A. McKittrick (1965) noted similar morphological characteristics between some termites and cockroach nymphs . The similarities among these cockroaches and termites have led some scientists to reclassify termites as a single family, the Termitidae, within the order Blattodea . Other scientists have taken a more conservative approach, proposing to retain the termites as the Termitoidea, an epifamily within the order . Such measure preserves the classification of termites at family level and below . </P>

Where is the brain of a cockroach located