Bothrium
{{Short description|Attaching organs of cestodes}}
Bothria (from Greek bothrion = small pit, diminutive of bothros = pit, trench) are elongate, dorsal or ventral longitudinal grooves on the scolex of cestoda. They have weak muscles but are capable of some sucking action. Bothria occur as a single or two pair and are typical of the order Pseudophyllidea (e.g., Diphyllobothrium).Richard C. Brusca, Gary J. Brusca. Invertebrates. Sinauer Associates; 2 edition. 2003[http://www.marineparasitology.com/Papers/Jones%20et%20al%20Palm%202004.pdf Jones MK, Beveridge I, Campbell RA, Palm HW. Terminology of the sucker-like organs of the scolex of trypanorhynch cestodes. Systematic Parasitology 59: 121–126, 2004.] {{webarchive |url=https://web.archive.org/web/20160304023231/http://www.marineparasitology.com/Papers/Jones%20et%20al%20Palm%202004.pdf |date=March 4, 2016 }}
Bothria are muscular grooves that provide attachment by pinching host tissue between them.