Fig. 2 in Molecular phylogeny and comparative morphology reveal the species validity and systematic position of Lepidodesma (Bivalvia: Unionidae)

Fig. 2 Anatomical features of Lepidodesma aligera with left valve removed and Lepidodesma languilati with right valve removed. a L. aligera; b L. languilati. c–h close-up of apertures and gills: c–e Lepidodesma aligera; f–h, Lepidodesma languilati. Abbreviations: aam, anterior adductor muscle; pam, posterior adductor muscle; exa, excurrent aperture; ia, incurrent aperture; f, foot; ig, inner gill; og, outer gill; lp, labial palps; m, mantle; p ia, papillae in incurrent aperture; pg exa, pigmentation of excurrent aperture