dielma dielma dielma is a gram-positive and anaerobic genus from the family of erysipelotrichidae with one known species (dielma fastidiosa). dielma fastidiosa has been isolated from human feces from dielmo in senegal. dielma gram staining of dielma fastidiosa strain jc13 t scientific classification domain: bacteria phylum: bacillota class: erysipelotrichia order: erysipelotrichales family: erysipelotrichaceae genus: dielmaramasamy et al. 2016 type species dielma fastidiosa species d. fastidiosa