Parasitology, Harold W. Manter Laboratory of


Date of this Version



Systematic Parasitology 29:1 (September 1994), pp. 51–60.

doi: 10.1007/BF00009838


Copyright © 1994 Kluwer Academic Publishers. Used by permission.


A new blood-fluke, Cruoricola lates n. g., n. sp., is described from sea-bass Lates calcarifer cultured in Malaysia. It is also found in Thailand and Australia. All fish examined over 15 cm in length were infected in the type-locality. This sanguinicolid is differentiated from other genera by the spherical seminal vesicle; the large, single testis extending beyond the intestinal caeca; the medial, bi-lobed ovary; and the single column of submarginal, laterally directed, evenly spaced spines. It has separate genital pores which are close together. Adults are found predominantly in the mesenteric venules of the venous circulation. Juveniles are commonest in the caudal kidney.