Microcetus lappus gen. nov., sp. nov.: new species of ciliated protozoon from the bovine rumen.

Abstract A new species of small, ciliated protozoon, Microcetus lappus gen. nov., sp. nov., from the rumen of Norwegian Red cattle is described. M. lappus possesses a novel cytopharyngeal apparatus of two rod-shaped structures, one situated on the dorsal side of the buccal cavity and one on the ventral side, suggesting that it belongs to a previously undescribed taxon.