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

Figure 6

Types of distribution of the labial apical sensilla in the Nepomorpha: Type A Nepidae, Belostomatidae, and Nerthrinae. (a) Nepa cinerea. (b) Laccotrephes japonensis. (c) Ranatra chinensis. (d) Belostomatinae; Appasus major. (e) Lethocerinae; Lethocerus deyrollei. (f) Type B, Ochteridae; Ochterus marginatus. (g) Type C, Gelastocorinae; Gelastocoris oculatus. (h) Type A, Nerthrinae; Nerthra nepaeformis. (i) Type B, Aphelocheiridae; Aphelocheirus aestivalis. (j) Type C, Cheirochelinae; Coptocatus oblongulus. (k) Limnocorinae; Limnocoris lutzi. (l) Helotrephidae; Helotrephes semiglobosus. (m) Type D, Pleidae; Paraplea frontalis. (n) Type C, Notonectinae; Notonecta glauca. (o) Type E, Cymatiinae; Cymatia coleoptrata. (p) Diaprepocoridae; Diaprepocoris zealandiae. (q) Micronectidae; Micronecta quadristrigata. PAS1 papilla sensillum, flattened; PAS2 papilla sensillum, rounded; PIP peg-in-pit sensillum; CUS cupola-like sensillum located outside the labial tip; RBS ribbon-like sensillum; PES peg sensillum.