Description of Urocleidoides vaginoclaustrum Kritsky & Venkatanarasaiah, 2004 (Monogenea, Ancyrocephalidae) from the gills of Exotic fish Xiphophorus in China

One exotic genus and species of the genus, Urocleidoides Mizelle Price,1964, Urocleidoides vaginoclaustrum Jogunoori, Kritsky Venkatanarasaiah, 2004 was reported for the first time in China, which parasitized on gills of exotic fish Xiphophorus. The shape of our specimen basically agrees with the original description ,but there are slightly different in measurement.