Comparative Immature Morphology of Brazilian Fire Ants (Hymenoptera: Formicidae: Solenopsis)

Figure 4

Fourth instar larva of Solenopsis saevissima worker. (a) Larva in side view. (b) Head capsule in full frontal view. (c) Frontal view of right mouthparts; lb: labrum; mx: maxilla; md: mandible; mp: maxillary palp; ga: galea; arrowheads: setaceous sensilla. (d) Lower mouthparts; md: mandibule; mx: maxilla; lm: labium. (e) Antennal sensilla (setaceous). (f) thoracic spiracle. Respective sizes of scale bars (μm): 200, 100, 10, 15, 5, and 3.