Trigonostomum vanmecheleni

Description:

Trigonostomum vanmecheleni sp. nov. A, Internal organisation as seen on a live animal, dorsal view. ac: anterior cilia; ar: adenal rhabdites; ba: bursal appendage; bu: female bursa; e: eye; gp: gonopore; ov: ovary; p: proboscis; ph: pharynx; pv: prostate vesicle; st: stylet; t: testis; vit: vitellarium; vs: seminal vesicle. B, stylet and its parts: B1, entire stylet as seen on the holotype; B2, stylet proper; B3, the broad plate; B4, the narrow plate. C, bursal appendage from the holotype (1 and 2 at different focal planes). D, stylet as seen on a slightly squeezed live animal. E, bursal appendage as seen on a slightly-squeezed live animal.