Dictionary definition: Blattodea

Blattodea ( cockroaches , roaches ; phylum Arthropoda , class Insecta ) Order of medium to large, exopterygote insects in which the fore wings are modified as rather strongly sclerotized tegmina . Wings are absent in some groups. The legs are gressorial , and the body is dorsoventrally compressed. Auditory organs are absent. Females have a small, concealed ovipositor , and eggs are laid in an ootheca . ...

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