Figure 3.

Various shapes of intercalary sclerites in the Nepomorpha: Nepinae: (a) Curicta granulosa, (b) Borborophyes mayri, (c) Laccotrephes japonensis, (d) Nepa cinerea, Ranatrinae: (e) Cercotmetus asiaticus, (f) Ranatra chinensis. Belostomatidae: Belostomatinae: (g) Belostoma flumineum, (h) Deinostoma dilatatum, (i) Appasus major, (j) Hydrocyrius colombiae, (k) Limnogeton fieberi, Lethocerinae: (l) Lethocerus deyrollei, Ochteridae: (m) Ochterus marginatus, Gelastocoridae: Gelastocorinae: (n) Gelastocoris oculatus, Nerthrinae: (o) Nerthra nepaeformis, Aphelocheiridae: (p) Aphelocheirus aestivalis, Naucoridae: Cheirochelinae: (q) Cheirochela feana, (r) Gestroiella limnocoroides, (s) Coptocatus oblongulus, (t) Tanycricos longiceps, Limnocorinae: (u) Limnocoris lutzi, Cryphocricinae: (w) Cryphocricos hungerfordi, Laccocorinae: (v) Laccocoris hoogstraali, Naucorinae, (x) Naucoris maculatus, Notonectidae: Anisopinae: (y) Anisops camaroonensis, Notonectinae: (z) Notonecta glauca. The dotted line indicates a border between the third labial segment and the intercalary sclerites. The same scale bar has been applied for all images (500 μm).