Table 3.

Morphological differences between five species of Sinolapotamon.

Species	Sinolapotamoncirratum sp. nov.	S.patellifer (cf. Dai 1999: fig. 78)	S.anacoluthon (cf. Ng and Dudgeon 1992: figs 4, 5)	S.palmatum (cf. Zhu et al. 2010: figs 6–9)	S.auriculatum (cf. Zhu et al. 2010: figs 1–4)
Flagellum of exopod of third maxilliped	slightly longer than width of merus (Fig. 4B)	slightly shorter than width of merus	exceeding width of merus	slightly longer than width of merus	shorter than width of merus
Anterolateral margin of carapace	distinctly cristate, lined with approximately 20 granules (Fig. 3A)	ridged, without conspicuous granules	cristate, lined with numerous small rounded granules	convex laterally, cristate, lined with fine granules	weakly convex laterally, cristate, lined with fine granules
Ratio of subterminal segment to terminal segment of G1	1.7 (Fig. 7A)	1.7 (Fig. 7B)	1.1 (Fig. 7C)	1.5 (Fig. 7E)	1.5 (Fig. 7D)
Terminal segment of G1	longitudinally extended oval (Fig. 7A)	oval (Fig. 7B)	longitudinally extended oval (Fig. 7C)	subcircular (Fig. 7E)	oval (Fig. 7D)
ventral lobe of G1	blunt, reaching 1/2 length of terminal segment (Fig. 7A)	sharp, reaching beyond proximal 2/3 length of terminal segment (Fig. 7B)	sharp and short, reaching 3/7 length of terminal segment (Fig. 7C)	sharp, reaching 5/6 length of terminal segment (Fig. 7E)	sharp, reaching proximal 1/2 length of terminal segment (Fig. 7D)