Adult D. hominis are 12-18 mm in length, are bluish in color, and resemble bumble-bees. They have three ocelli and a pair of large compound eyes, which are sexually dimorphic in that eyes are situated closer together in males than in females. Also, females are normally larger in size than males and bear a pseudovipositor at their posterior. As in other muscomorphans, the antennae of adult D. hominis each bear an arista -a tenuous, plumose projection- on the second of its three segments. The knob-like halteres, or functionally reduced hind-wings that are characteristic of dipterans, are also present. Peculiarly, the ancestral mouthparts have been lost in adult D. hominis, as well as in other cuterebrines.
Dermatobia hominis larvae, or maggots, are identified by the pyriform shape, the transverse rows of spines on their tegument, sclerotized mouthparts, and the pair of projecting spiracles at the posterior end. They may reach 25 mm in length and 7 mm in diameter.
Range length: 12 to 18 mm.
Other Physical Features: ectothermic ; heterothermic ; bilateral symmetry
Sexual Dimorphism: female larger; sexes shaped differently