Table 2.

Differences between Mediapotamon liboense sp. nov., M. angustipedum (Dai & Song, 1982), M. leishanense Dai, 1995 and Daipotamon minos, Ng & Trontelj, 1996.

Character/ Species	M. liboense sp. nov.	M. angustipedum	M. leishanense	Daipotamon minos
Carapace	Flat, cervical groove indistinct	Swollen, cervical groove indistinct	Flat, cervical groove distinct	Slightly swollen, cervical groove distinct
Epibranchial tooth	Sharp, distinct	Sharp, distinct	Blunt, indistinct	Blunt, indistinct
Anterolateral margin	Lined with scattered granules	Lined with numerous inseparable granules	Lined with numerous inseparable granules	Lined with numerous inseparable granules
Shape of male telson	Narrow triangular	Broad triangular	Broad triangular	Tongue-shape
G1 in situ	Reaching pleonal locking tubercle	Reaching pleonal locking tubercle	Reaching pleonal locking tubercle	Not reaching pleonal locking tubercle
Shape of G1	Slender, terminal segment obviously bent with constant diameter	Very slender, terminal segment straight and gradually narrowing	Very slender, terminal segment obviously bent and gradually narrowing	Stout, terminal segment slightly bent with constant diameter
Female vulvae	Large-sized, not reaching sternites 5/6 in situ	Medium-sized, reaching sternites 5/6 in situ	Large-sized, reaching sternites 5/6 in situ	Medium-sized, not reaching sternites 5/6 in situ