Amblipigido

The body is depressed and is brown, shows two distinct regions, the prosoma and opisthosoma, which are separated by a narrow waist. The carapace is broad and flattened, shield-shaped, with two plants and three eyes on both sides near the front margin, some species have no eyes. The opisthosoma consists of 12 segments, the genital orifice opens into the second sternite and is covered by a large operculum, under which also leads to the first pair of respiratory organs (filotráqueas), while the second pair is open in the third sternite .