"Rickettsia melolonthae" Krieg 1955 Dataset NCBI Taxonomy Classification phylum Pseudomonadota class Gammaproteobacteria order Legionellales family Coxiellaceae genus Rickettsiella species Rickettsiella melolonthae Name Homonyms Rickettsia melolonthae "Rickettsia melolonthae" Krieg 1955