Mandibular segment: the fourth or mandible bearing segment of head.
Mandibulata: that series of insects in which the adults have functional mandibles used for biting.
Mandibulate: with jaws or mandibles.
Manicate -us: fur-like: surface clothed with irregular depressed hair.
Manitrunk: that part of trunk that bears the anterior legs: =prothorax.
Manometabola: with a slight or gradual metamorphosis and without a resting stage; e.g. the Orthoptera.
Manubrium: in Coleoptera: that part of the mesosternum in Elateridae which forms the process for fitting into the cavity of the prothorax: in Collembola the basal part of the furculum.
Manus: the hand: formerly applied to the anterior tarsus.
Marbled: irregularly mottled, gray and white, like marble; = marmoratus.
Marcescent: shrivelling.