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全名 Quadrula intermedia (Conrad, 1836) 英文俗名 Cumberland Monkey Face, Cumberland Monkeyface,Cumberland Monkey-face Pearly Mussel. 外殼特徵 Shell subelliptical, suborbicular of subquadrate, convex tosubinflated; beaks moderately high but not full. Surfacecovered, except on the anterior end, with large, elevatedwarts, which are sometimes double; epidermisgreenish-yellow or yellowish-green, variegated with fine,angular green spots or zigzags, sometimes with imperfectrays; pseudocardinals radial, radially striate; lateral of rightvalve double; beak cavities deep, musch compressed. Nacrewhite or straw-color, thinner and iridescent behind. 地理分布 Tennessee River System, USA. 模式產地 Nolachucky River, Tennessee, USA. 原始記錄 Unio intermedia Conrad, Monog., VIII, 1836,p.63, pl. XXXV, fig.2.－Hanley, Biv. Shells, 1856, p.381,pl. XX, fig.28.－Kuster, Conch. Cab. Unio, 1861, p.213, pl.LXX, fig.6.－Reeve, Conch. Icon., XVI, 1864, pl.XIII,fig.48. 同種異名 Unio intermedia Conrad, 1836Margaron (Unio) intermedius Lea, 1852Unio kleinianus Kuster, 1861 備註 The species is listed as endangered species under Taiwan'sWildlife Conservation Law (WCL). This species was listedin the CITES Appendix I on 1st July 1975. Photo-specimenwas collected from the Clinch River, Clinch Port, Scott Co.,Virginia, USA and inventory in UMMZ 77030-2。