Muscle: the fleshy fibres of the insect body that serve to move the appendages and other body organs. Mute: silent: without power to produce audible sound. Mutic -us: unarmed: lacking processes where such usually occur. Mutici: Acridiids without a posternal spines. Mutilate -us: cut off: mutilated: abbreviated: not complete. Mycetophagous: feeding upon fungi. Myiasis: disease or injury caused by the attack of dipterous larvae. Myoblast: a cell that produces muscular tissue. Myrmecology: that branch of entomology that deals with ants. Myrmecophilous: ant-loving: applied to insects that live in ant nests. Mystacine -us: bcarded: with a hairy fringe above mouth or on clypeus. Mystax: in Diptera; a patch of hair or bristles above the mouth, on the lower part of the hypostoma above the vibrissae. Mytiliform: shell-like; as the middle feet in some aquatic Hemiptera. N Nacreous: pearly: resembling mother of pearl := margaritaceous. Nail: a tarsal claw: specifically the stout pointed claws in predatory Heteroptera = unguis. Naked: not clothed: lacking vestiture: a pupa when not inclosed in a cocoon or other covering. Nasal suture: =clypeal suture; q.v. Nasus: anterior termination of the face in certain Hymenoptera: the clypeus or a modification of it: in Odonata, the upper portion of the clypeus = supra-clypeus = postclypeus. Nasuti: that type of termite soldiers that have the head prolonged into a point. Natatorial -ions: formed for swimming. Navicular: boat-shaped = cymbiform. Neanic: referring to the pupal stage. Nearctic: temperate and arctic North America, including Greenland. Nebula: a cloud: a vague, indefined, dusky shading. Nebulous -ose: cloudy: without definite form or outline. Neck: the slender connecting structure between head and thorax of such insects as have the head free: any contraction of the head at its juncture with the thorax. Necrophagous: living in or on carrion. Nectaries: honey-tubes, cornicles, siphuncles; q.v. Nematid: thread-like. Nematocera: = nemocera; q. A. Nematocerous: with long, thread-like antenna. Nemocera: Diptera with long, at least six-jointed antennae. Nemoglossata: bees with a thread-like tongue. Nemoricolous: living in open, sunny woods. Neogeic: belonging to the Western Hemisphere or New World: see gerontogeic. Neolepidoptera: all haustellate Lepidoptera, except the generalized Micropterygidae; mandibles not functionally present; pupa incomplete or obtect: see paleolepidoptera and protolepidoptera. Neoteinic: applied to complemental females in Termites because, though reproductive, they retain some juvenile characters. Neotropical: that part of the earth's surface embraced in the greater part of Mexico, West Indies and South America. Neotype: a specimen identified with a species already described, and selected as a standard of reference where the original type or co-types are lost or destroyed.