7 NEW SPECIES OF DACTYLOGYRUS-DIESING, 1850 (MONOGENEA) FROM PUNTIUS HAMILTON (CYPRINIDAE) OF THAILAND

Seven new species of Dactylogyrus were found on several Puntius specie s from Thailand. They are D. tapienensis new species from P. gonionotu s, P. altus and P. schwanenfeldii; D. viticulus, new species, from P. gonionotus, P. altus and P. schwanenfeldii; D. tonguthaii, new species , from P. gonionotus; D. siamensis, new species, from P. gonionotus an d P. daruphani; D. kanchanaburiensis, new species, from P. gonionotus; D. pseudosphyrna new species, from P. gonionotus and P. schwanenfeldi i; and D. kwainensis, new species, from P. daruphani. Besides these ne w species, D. lampam Lim, 1992, was found on P. gonionotus, P. schwane nfeldii and P. altus; while D. perakensis Lim & Furtado, 1986, and D. cristatocleithrium Lim & Furtado, 1986, were obtained from P. orphoide s. No dactylogyrids were found on P. partipentazona from Thailand. D. pseudosphyrna, new species, was also found on Cyclocheilichthys enoplo s.