part_of mesosoma coxa number Leg segments Femur- The third segment of any leg, counting from the basal coxal segment that articulates with the alitrunk. The femur is generally the longest leg segment and is separted from the coxa only by a small segment, the trochanter. Leg segments- Each leg consists of a basal coax that articulated with the alitrucnk, followed in order by a small trochanter, a long and generally stouct fentur, a tibia, and a tarsus, the last consisting of five small segments and terminating apically in a pair of claws. The prefixes pro-, meso-, and meta-, applied to any of these terms, indicate that segment on the left of a particular thoracic segment. (Bolton, B. (1994). Identificstion guide to the ant genera of the world. Cambridge, Mass., Harvard University PRess. pp.1-222). SIBO:0000109 sibo