Genus Coecobrya Yosii, 1956 (in: 1956b)

Type species: Sinella (Coecobrya) akiyoshiana Yosii, 1956

Diagnosis. Body with pigment reduced or totally absent, without scales, Th II–III plurichaetotic; antennae shorter than the body length, with four segments, Ant IV not annulated and without apical bulb; 0–3 eyes; prelabral, labral, basolateral and basomedian chaetae smooth; Abd II–IV bothriotrichal formula 2, 3, 2; ms and sens formula of Th II–Abd V as 1, 0| 1, 0, 0–1, 0, 0 and 2, 2| 1, 2, 2, –, 3, respectively; Abd IV relatively developed, 2.5 to 4 times the length of Abd III in the midline; dorsal manubrium with or without smooth chaetae; dens without spines, mucro falcate with basal spine (modified of Chen & Christiansen 1997; Zhang et al. 2009, 2016; Zhang & Deharveng 2015).