Methylothermus thermalis , the designated type species of the genus Methylothermus , is not available from culture collections and its nomenclatural type is a patent strain. According to Rule 20a of the International Code of Nomenclature of Prokaryotes, only species whose names are legitimate may serve as types of genera. Therefore, the name Methylothermus and the names of the species Methylothermus thermalis and Methylothermus subterraneus are not validly published and are illegitimate. We therefore submit a Request for an Opinion to the Judicial Commission of the ICSP to consider the later-named Methylothermus subterraneus as the new type species of the genus Methylothermus based on Rule 20e(2).
The generic name Flaviaesturariibacter Kang, Chun, Seo, Kim and Jahng 2015, 2212 is malformed: being derived from the Latin noun aestuarium, …aestuarii… instead of …aesturarii… is required. Moreover, according to Appendix 9 of the Prokaryotic Code, a connecting vowel must be dropped when the following word element starts with a vowel. I therefore propose to correct the name Flaviaesturariibacter to Flavaestuariibacter.
The name of the class Actinobacteria is illegitimate according to Rules 15, 22 and 27(3) because it was proposed without the designation of a nomenclatural type. I therefore propose to designate the order Actinomycetales Buchanan 1917, 162 (Approved Lists 1980) as its nomenclatural type, based on Rule 22 of the International Code of Nomenclature of Prokaryotes.