真球虫目(Eucoccidiida)艾美球虫亚目(Eimeriina)中的一属，其特点为卵囊中含有8个裸子孢子；此属中的T.perniciosa对家禽小鸭有高度致病性，寄生于鸭的小肠特别是小肠上半段- pachydermatocele
- pachydermatous
- pachydermoperiostosis
- pachyglossia
- pachygnathous
- pachygyria
- pachyleptomeningitis
- pachymeninges
- pachymeningitis
- pachymeningopathy
- pachymeninx
- pachynema
- pachynesis
- pachynsis
- pachyntic
- pachyonychia
- pachypelviperitonitis
- pachyperitonitis
- pachypleuritis
- pachyrhizid
- pachysalpingitis
- pachysalpingo-ovaritis
- pachytene
- pachyvaginalitis
- pachyvaginitis