Table 4 in Molecular phylogeny and comparative morphology reveal the species validity and systematic position of Lepidodesma (Bivalvia: Unionidae)

<p><b>Table 4</b> Shell characters of <i>Lepidodesma aligera</i> and Lepidodesma languilati</p><table><tbody><tr><th>Characters</th><th><i>Lepidodesma aligera</i> (<i>n</i> =3)</th><th><i>Lepidodesma languilati</i> (<i>n</i> =6)</th></tr></tbody><tbody><tr><th>Length (mm)</th><td>161.38&ndash;175.22</td><td>192.25&ndash;207.67</td></tr><tr><th>Height (mm)</th><td>98.67&ndash;108.56</td><td>121.46&ndash;138.34</td></tr><tr><th>Width (mm)</th><td>75.33&ndash;81.78</td><td>83.18&ndash;88.35</td></tr><tr><th>Shell shape</th><td>Subtriangular</td><td>Subtriangular</td></tr><tr><th>Pseudocardinal teeth</th><td>Nearly absent</td><td>Nearly absent</td></tr><tr><th>Lateral teeth</th><td>2L, 1R</td><td>2L, 1R</td></tr><tr><th>Umbo position</th><td>1/4 of shell length; umbo higher than the dorsal margin</td><td>1/3 of shell length; umbo obviously higher than the dorsal margin</td></tr><tr><th>Umbo sculpture</th><td>Doubly looped or doubly noduled ridges</td><td>Doubly looped ridges</td></tr><tr><th>Umbo pocket</th><td>Deep, wide</td><td>Deep, wide</td></tr><tr><th>Surface sculpture</th><td>Ridges that follow the growth lines, two strong posterior dorsal ridges, and scattered nodules on the post-dorsal wing</td><td>Ridges that follow the growth lines and two strong posterior dorsal ridges</td></tr><tr><th>Nacre color</th><td>Orange, umbo pocket is pale green</td><td>Orange, umbo pocket is lilac</td></tr><tr><th>Dorsal margin</th><td>Anterior margin oval, dorsal margin nearly perpendicular</td><td>Anterior margin oval, with the dorsal margin curved</td></tr><tr><th></th><td>to the posterior margin, strongly curved upwards near the downwards posterior edge</td></tr><tr><th>Ventral margin</th><td>Slightly curve</td><td>Slightly curve</td></tr></tbody></table><p><i>L</i> left valve, <i>R</i> right valve</p>