New cave-dwelling species of Tomoceridae from China, with a study on the pattern of mesothoracic bothriotricha in Tomocerinae (Collembola, Entomobryomorpha)

Tomocerus tiani sp. n. A tenaculum (anterior view) B right side of manubrium (dorsal view, showing prominent dorsal chaetae, T-shaped mark: socket of scale, same as below) C disto-external corner of manubrium (dorsal view) D basal and middle subsegments of dens (dorsal view, showing dental spines and prominent dorso-basal chaeta) E feather-like dental chaeta (lateral view) F mucro (lateral view).