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There are currently 7 names in this directory beginning with the letter F.
The long leg segment between the trochanter and tibia

The three basic segments of the antenna are the scape (base), the pedicel (stem), and the flagellum, which is comprised of units known as flagellomeres.

Long, apical segment of the antenna, commonly subdivided into several subsegments (flagellomeres)

The frons is the front of the face. It lies between the frontal sutures and above the epistomal suture.

frontal sutures
Frontal sutures separate the frons from the gena.

A special "strut" of exoskeleton that reinforces the ventral corners of each thoracic segment and provides a rigid site for attachment of leg muscles and ventral longitudinal muscles.

The furcula ("little fork" in Latin) or wishbone is a forked bone found in birds and some other animals, and is formed by the fusion of the two clavicles. In birds, its primary function is in the strengthening of the thoracic skeleton to withstand the rigors of flight.