Macropterous: long or large winged.
Macrosomites: the primitive regions of primitive hand of the insect embryo.
Macula: a colored mark larger than a spot; of indeterminate figure.
Maculate -ed: spotted or marked with figures of any shape, of a color different from the ground.
Maculation: the ornamentation or pattern of marking.
Maculose: spotted; with many marks or spots.
Maerianum: "that segment of the post-pectus situate one on each side behind the acetabulum and parapleurum; it supports the posterior feet": see meriaeum.
Magenta: pinkish red; an aniline product.
Magis: more.
Maggot: applied to the footless larvae of Diptera.