Deliberations on the External Morphology and Modification of the Labial Segments in the Nepomorpha (Heteroptera: Insecta) with Notes on the Phylogenetic Characteristics

Figure 4

Examples of diversified intercalary sclerites in the Nepomorpha. Nepinae: (a) Borborophyes mayri, (b) Laccotrephes japonensis, (c) Nepa cinerea, Ranatrinae: (d) Cercotmetus asiaticus, (e) Ranatra chinensis. Belostomatidae: Belostomatinae: (f) Belostoma flumineum, (g) Deinostoma dilatatum, (h) Appasus major, (i) Hydrocyrius colombiae, (j) Limnogeton fieberi, Lethocerinae: (k) Lethocerus deyrollei, Ochteridae; (l) Ochterus marginatus, Gelastocoridae: Gelastocorinae: (m) Gelastocoris oculatus, Nerthrinae: (n) Nerthra nepaeformis, Aphelocheiridae: (o) Aphelocheirus aestivalis, Naucoridae: Cheirochelinae: (p) Cheirochela feana, (q) Gestroiella limnocoroides, (r) Coptocatus oblongulus, (s) Tanycricos longiceps, Limnocorinae: (t) Limnocoris lutzi, Cryphocricinae: (u) Cryphocricos hungerfordi, Laccocorinae: (w) Laccocoris hoogstraali, Naucorinae: (v) Naucoris maculatus, Pleidae: (x) Paraplea frontalis, Notonectidae: Anisopinae: (y) Anisops camaroonensis, Notonectinae: (z) Notonecta glauca.