Worker enteric valve of Echinotermes biriba sp. n. A Spliced mount B whole mount, showing in situ position of armature. Note the filamentous bacteria attached to the spines. The trilobed seating anterior to the spines (removed in this preparation) is full of bacteria and devoid of food particles, referred by Noirot (2001) as the “bacterial pouch”.

 
 
  Part of: Castro D, Scheffrahn RH, Carrijo TF (2018) Echinotermes biriba, a new genus and species of soldierless termite from the Colombian and Peruvian Amazon (Termitidae, Apicotermitinae). ZooKeys 748: 21-30. https://doi.org/10.3897/zookeys.748.24253