Parasitic cockroaches indicate complex states of earliest proved ants

Myrmecophilous and termitophilous interactions likely contributed to the competitive advantage and evolutionary success of eusocial insects, but how these commensal and parasitic relationships originated is unclear due to absence of fossil records. New extinct cockroaches of the still living family Blattidae are reported here from the Cretaceous Myanmar amber (99 Ma) and are the earliest known inhabitants of complex ant nests, demonstrating that...