Reference

B.S. Batson (1985): A paradigm for the study of insect-ciliate relationships: *Tetrahymena sialidos* sp. nov. (Hymenostomatida: Tetrahymenidae), parasite of larval *Sialis lutaria* (#Linn#.) (Megaloptera: Sialidae) – Phil. Trans. R. Soc. – 310: 123 - 144.