Figure 1 from: Rocha MM, Constantini JP (2015) Internal ornamentation of the first proctodeal segment of the digestive tube of Syntermitinae (Isoptera, Termitidae). Deutsche Entomologische Zeitschrift 62(1): 29-44. https://doi.org/10.3897/dez.62.8550

Figure 1 - First proctodeal segment (P1), diagrammatic illustrations showing the line of incision most often used in this study. (a) Silvestritermes euamignathus, mesenteric tongue and ornamentation situated on convex side of mesenteric arch; (b) Rhynchotermes nasutissimus, ornamentation situated on convex side of mesenteric arch and mesenteric tongue twisted.