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Scanning Electron Micrograph Of Mosquito Stock PhotoAnimal Body Part,Animal Exoskeleton,Animal Hair,Arthropod,Black And White,Bloodsucking,Death,Georgia - US State,Horizontal,Insect,Mosquito,No People,Parasitic,Pest,Photography,SEM,VectorPhotographer Centers For Disease Control - edited version ©Science FactionCollection: Science Faction Seen here is the first segment of this unidentified mosquito's left antenna, magnified 500X. You'll note that the central region of the scape is concave, and it is into this concavity that the second segment of the antenna, known as the pedicle, once interlocked. The antenna is composed of three main regions: scape, pedicle, and flagellum. The scape attaches the sensory organ to the head region, and the pedicle joins the distal, jointed flagellum to the scape. The bilaterally situated antennae are not the only structures in the insect's repertoire of sensorial apparatuses that provide it with information of changes in its environment. In fact, the chitinous exoskeletal hairs, known as setae, as well as the grape-like ommatidia, which are the functional units of which the compound eyes are composed, all take part in providing the mosquito with environmental updates.