William J. Poly
Research Associate
Department of Ichthyology
California Academy of Sciences
wpoly@calacademy.org
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Trimusculotrema schwartzi n. sp. (Capsalidae) is described from the skin of the stingray, Dasyatis zugei (Elasmobranchii, Rajiformes, Dasyatidae) from Hong Kong, China. Only three other species have been placed in the genus Trimusculotrema: T. micracantha (Euzet and Maillard, 1967), T. leucanthemum (Euzet and Maillard, 1967), and T. uarnaki Whittington and Barton, 1990. Trimusculotrema schwartzi n. sp. may be differentiated from all known species of Trimusculotrema by the length of the anterior hamuli and by the absence of pigment shields over the eyes. Its occurrence on a stingray from China represents a northern extension of the geographic range of Trimusculotrema. [A fifth species, Trimusculotrema heronensis Whittington & Kearn, 2008, has been described recently; Whittington, I. and G.C. Kearn. 2008. Trimusculotrema heronensis sp. nov. (Monogenea, Capsalidae) from the skin of the pink whipray Himantura fai (Elasmobranchii, Dasyatidae) from Heron Island, Queensland, Australia. Acta Parasitologica 53(3): 251-257.]