Unidentified Flies (S/F)

Various species of flies inhabit islands in the Gulf of Fernandez, such as Isla Nublar and the Muertes Archipelago. Few have been observed in any detail, but are typically seen near carcasses, dung, or large animals. They demonstrate behavioral patterns common to the subsection Calyptratae, and the few which have been observed or described also physically resemble flies in this group. 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.