Holospora undulata (ex Hafkine 1890) Gromov and Ossipov 1981 Boscaro V. Fokin S.I. Schrallhammer M. Schweikert M. Petroni G. Revised systematics of Holospora-like bacteria and characterization of "Candidatus Gortzia infectiva", a novel macronuclear symbiont of Paramecium jenningsi. 2013 65 1 255 267 Microbial Ecology Microb Ecol 0095-3628 1432-184X 10.1007/s00248-012-0110-2 22940732 Preer J.R. Preer L.B. Revival of names of protozoan endosymbionts and proposal of Holospora caryophila nom. nov. 1982 32 1 140 141 International Journal of Systematic Bacteriology Int J Syst Bacteriol 0020-7713 10.1099/00207713-32-1-140 Gromov B.V. Ossipov D.V. Holospora (ex Hafkine 1890) nom. rev., a genus of bacteria inhabiting the nuclei of paramecia. 1981 31 3 348 352 International Journal of Systematic Bacteriology Int J Syst Bacteriol 0020-7713 10.1099/00207713-31-3-348 The type deposit is the original description given by Hafkine 1890. Intracellular symbionts of Paramecium caudatum. Clone M1-48 of P. caudatum containing Holospora undulata has been deposited in the Laboratory of Invertebrate Zoology, Biological Research Institute, Leningrad University. Boscaro et al. 2013 assert that strain StB is also type material.