Reticulation of cuticle in Tetracanthella of East Asia 51 T. annulata sp. nov., posterior edge of Abd.IV 52 T. sylvatica, ibidem 53 T. manschurica, posterior edge of Abd.IV, lateral part 54 T. czernovae, posterior edge of Abd.IV 55–56 T. tardoki sp. nov., posterior edge of head (55) and posterior edge of Abd.IV (56) 57 T. orientalis, posterior edge of head. Abbreviations: p1 and p2, chaetae of p-row, sm-f smooth field.

 
 
  Part of: Potapov M, Brinev A, Sun X (2019) Isotomidae of Japan and Asiatic part of Russia. II. The genus Tetracanthella of the Far East. ZooKeys 855: 31-54. https://doi.org/10.3897/zookeys.855.33000