Schistosomatoidea

noun plural

Schis·​to·​so·​ma·​toi·​dea ˌshis-tə-sō-mə-ˈtȯid-ē-ə  ˌskis- 

: a superfamily of digenetic trematodes that lack a metacercaria and have instead a furcocercous cercaria that actively penetrates the skin of a definitive host