Comparative Analysis and Systematic Mapping of the Labial Sensilla in the Nepomorpha (Heteroptera: Insecta)

Figure 22

Types and sizes of the sensilla of the Naucoridae: Cryphocricinae (Cryphocricos hungerfordi). (a) MPS are numerous and spread evenly on the IV segment (ventral view); TRS2 (four) are distributed over the ventral side (V) in one row near the apex of the IV segment. (b) MPS are numerous and distributed evenly over the IV segment (dorsal view), CH3 are less numerous and situated on the dorsal surface of the II segment, and COS are situated on the II segment (dorsal view). (c) MPS are less numerous, and only a few are situated on the dorsal surface of the III segment; on this segment there are present numerous, unidentified plates (PLE); CH2 are situated around the edge of the II segment on the ventral side. (d) One pair of CH3 is situated ventrally near the distal edge of the III segment. (e) PAS2 (no. 1–11) are situated on the labial tip (SFL).