Figure 6

SEM micrographs of the M. scalaris head structure show the third antennal segment or the first flagellar segment (red arrows), the arista (white arrows), and the compound eyes (blue arrows). (A) and (B) Frontal views of the head structure, while (C) merged SEM micrographs for both (A) and (B) for better visualization of the whole head region of the fly. (D) Lateral view of the head region.