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

Figure 7

Types of distribution of the mechanosensilla on the labial segments in the Nepomorpha (except for the Corixoidea). Sensilla numerous, grouped, and unevenly arranged on the labium ((a) Belostomatidae). Sensilla densely and evenly arranged on the labium ((b) Nepinae, Ranatrinae: I segment reduced dorsally); ((c) Ochteridae); ((d) Gelastocorinae). Sensilla less numerous and numerous evenly arranged ((e) Aphelocheiridae); ((f) dorsal side (g) ventral side of Cheirochelinae, Laccocorinae, Limnocorinae, Cryphocricinae, and Naucorinae). Sensilla are not very numerous and scattered unevenly ((h) Notonectinae); ((i) dorsal side, (j) lateral side of Pleidae); ((k) dorsal side, (l) ventral side of Helotrephidae).