Abstract Background Heterotrichous ciliates are common members of microeukaryote communities which play important roles in both the transfer of material and the flow of energy in aquatic food webs. This group has been known for over two centuries due to their large body size and cosmopolitan distribution. Nevertheless. species identification and phylogenetic relationships of heterotri... https://www.roneverhart.com/BT21-Pop-Vinyl-Figure-Tata-687/