thermoactinomyces vulgaris thermoactinomyces vulgaris thermoactinomyces vulgaris is a species of bacteria. thermoactinomyces vulgaris view of thermoactinomyces vulgaris neopulullanase showing dimeric structure scientific classification domain: bacteria phylum: bacillota class: bacilli order: bacillales family: thermoactinomycetaceae genus: thermoactinomyces species: t. vulgaris binomial name thermoactinomyces vulgaristsilinsky, 1899 synonyms thermoactinomyces candidus kurup et al., 1975 thermoactinomyces intermedius the species is known to cause farmer's lung.