Transfer of Pfennigia purpurea tindall 1999 (Amoebobacter purpureus Eichler and Pfennig 1988) to the genus Lamprocystis as Lamprocystis purpurea comb. nov.

On the basis of its close phylogenetic relationship to Lamprocystis roseopersicina, the phototrophic purple sulfur bacterium originally described as Amoebobacter purpureus and recently transferred to Pfennigia purpurea is reclassified as Lamprocystis purpurea comb. nov. In addition, an emended description of the genus Lamprocystis is given.