Genus Sisubiotus Stec, Vecchi, Calhim & Michalczyk, 2021

Amended diagnosis

Large and whitish Macrobiotidae with: (i) a poreless cuticle, (ii) a wide rigid buccal tube with welldeveloped oral cavity armature (all three bands of teeth clearly visible in PCM, anterior teeth of the second band longitudinally elongated), (iii) two macroplacoids and a large microplacoid positioned close to them in the pharynx, (iv) Y-shaped claws of the Macrobiotus type with lunules on each leg, (v) ornamented eggs, laid freely, with areolation and conical processes with or without the labyrinthine layer.

Genus composition

Sisubiotus spectabilis (Thulin, 1928) (type species), Sisubiotus grandis (Richters, 1911), Sisubiotus wuyishanensis (Zhang & Sun, 2014) species inquirenda, Sisubiotus hakaiensis Vecchi, Choong & Calhim, 2022 sp. nov.