Steffania Toenshoff et al. 2012 Steffania Toenshoff et al. 2012 Steffania adelgidicola Toenshoff et al. 2012 Universal Root Woese et al. 1990 Bacteria (None 2015) Woese et al. 1990 Proteobacteria (sic) Garrity et al. 2021 Pseudomonadota corrig. Garrity et al. 2021 Alphaproteobacteriota (sic) Garrity et al. 2021 Gammaproteobacteria Garrity et al. 2005 emend. Williams and Kelly 2013 Incertae sedis 259 Toenshoff et al. 2012 Incertae sedis 260 Toenshoff et al. 2012 Steffania Toenshoff et al. 2012 Incertae sedis 260 Toenshoff et al. 2012 Steffania adelgidicola Toenshoff et al. 2012 Toenshoff E.R. Penz T. Narzt T. Collingro A. Schmitz-Esser S. Pfeiffer S. Klepal W. Wagner M. Weinmaier T. Rattei T. Horn M. Bacteriocyte-associated gammaproteobacterial symbionts of the Adelges nordmannianae/piceae complex (Hemiptera: Adelgidae). 2012 6 2 384 96 The ISME Journal ISME J 1751-7362 1751-7370 10.1038/ismej.2011.102 21833037 Toenshoff E.R. Penz T. Narzt T. Collingro A. Schmitz-Esser S. Pfeiffer S. Klepal W. Wagner M. Weinmaier T. Rattei T. Horn M. Bacteriocyte-associated gammaproteobacterial symbionts of the Adelges nordmannianae/piceae complex (Hemiptera: Adelgidae). 2012 6 2 384 96 The ISME Journal ISME J 1751-7362 1751-7370 10.1038/ismej.2011.102 21833037