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

Table 4 Shell characters of Lepidodesma aligera and Lepidodesma languilati
CharactersLepidodesma aligera (n =3)Lepidodesma languilati (n =6)Length (mm)161.38–175.22192.25–207.67Height (mm)98.67–108.56121.46–138.34Width (mm)75.33–81.7883.18–88.35Shell shapeSubtriangularSubtriangularPseudocardinal teethNearly absentNearly absentLateral teeth2L, 1R2L, 1RUmbo position1/4 of shell length; umbo higher than the dorsal margin1/3 of shell length; umbo obviously higher than the dorsal marginUmbo sculptureDoubly looped or doubly noduled ridgesDoubly looped ridgesUmbo pocketDeep, wideDeep, wideSurface sculptureRidges that follow the growth lines, two strong posterior dorsal ridges, and scattered nodules on the post-dorsal wingRidges that follow the growth lines and two strong posterior dorsal ridgesNacre colorOrange, umbo pocket is pale greenOrange, umbo pocket is lilacDorsal marginAnterior margin oval, dorsal margin nearly perpendicularAnterior margin oval, with the dorsal margin curvedto the posterior margin, strongly curved upwards near the downwards posterior edgeVentral marginSlightly curveSlightly curve
L left valve, R right valve