Flies in the subsection Calyptratae are commonly called calyptrate muscoids, or simply calyptrates. They include some of the most well-known flies, such as houseflies, flesh flies, and blowflies. Calyptrates are identifiable by their namesake calypter, which covers the halteres (a pair of sensory organs evolved from hindwings which are used in navigation). Roughly twelve percent of all scientifically described flies are in this group.
Although flies can be heard or seen in all the Jurassic Park films, none have been depicted clearly enough for species identification, but since they are typically depicted near carcasses, dung, or large animals, they demonstrate behavioral patterns common to Calyptratae.