This document summarizes information about Bucephalus damriyasai, a species of parasitic flatworm in the class Trematoda. It describes the morphology of B. damriyasai, including its elongate body, 7 tentacles on its rhynchus, oral sucker inside the posterior half of the body, two oval testes, elongate cirrus sac, subglobular to oval seminal vesicle, genital lobe with ejaculatory duct, oval ovary, and terminal excretory pore. It also provides a schematic representation of the life cycle of Bucephalus minimus, showing the parasite's life stages and intermediate hosts.