Fig. 4 in Gut anatomy and ultrastructural features of the paunch epithelium in the Neotropical termite Serritermes serrifer (Blattaria, Isoptera, Serritermitidae)

Fig. 4. Histological sections of the hindgut of a pseudergate of Serritermes serrifer. (A) Longitudinal section of the proctodeal segments, highlighting the short and cylindrical enteric valve (ev) and paunch (p). (B) Cross section of the pseudergate paunch, showing the thin epithelium (ep) and the large protozoa (pr) in the lumen (pl). (C) Longitudinal section of the abdomen of a soldier of indicating the location of the paunch followed by the rectum (r). (D) Detail of the soldier paunch with three large protozoa (pr) in the lumen and the thin epithelium involved by musculature (mu) Arrows indicate muscular fibers coating the rectum.