Labiotermes orthocephalus. (a) Schematic drawing of P1 showing arrangement of spines. (b, c) Photomicrographs: (b) Detail of the sparse short spines in the distal portion; (c) Detail of central ridge structure.

 
 
  Part of: 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