Two new brackish-water species of Testudinella (Rotifera: Testudinellidae) from Qi’ao Island in the Pearl River estuary, China, with a key to marine and brackish-water Testudinella Author Wei, Nan Author De, Willem H. Author Xu, Runlin text Zootaxa 2011 3051 41 56 journal article 46222 10.5281/zenodo.207785 ae05f614-8db9-4cd5-adb1-6f2d4ac83651 1175-5326 207785 Testudinella zhujiangensis Wei, De Smet & Xu 2010 ( Figs 6 C, 12–14) Redescription of trophi. Trophi malleoramate ( Figs 12 , 13 ). Frontal latero-ventral margins of rami with a large, quadratic and stout reinforced, caudally recurved alula ( Figs 12–14 : al). Median rami apophyses ( Fig. 12 B: ra) weakly developed. Inner margins distal rami sections bearing 14–21/13–21 strongly webbed arched rami scleropili ( Figs 12 B, 14A: as). Frontal rami scleropili with fairly acute distal tip ( Fig. 14 B: fs). Basal apophyses moderately developed ( Fig. 13 : ba). Fulcrum short with a distinct proximal opening frontally ( Fig. 13 : fo). Unci plates ( Fig. 12 A: u) consist of 11–13/11–12 weakly curved and strongly webbed teeth. Each uncus has 3, occasionally 4, major teeth with moderately offset lanceolate heads. Minor teeth with lanceolate head bearing two minute lateral knobs at their base; the webbing almost extends up to the base of the heads. Crescent-shaped manubria are composed of a superimposed dorsal, median, ventral and small sub-ventral chamber ( Fig. 12 B). Measurements. Trophi (N = 6): length × width 17.4–20.4 × 22.4–24.5 µm, ramus 10.7–12.1 µm, fulcrum 5.2– 6.1 µm, largest major tooth 10.0–10.6 µm, manubrium 10.7–12.4 µm.