TABLE 1.

Characteristics that differentiate C. tuscaniae sp. nov. from other biochemically related Corynebacterium spp. encountered in clinical specimens^a

Organism	Pyrazinamidase activity	Urease activity	Alkaline phosphatase activity	Acid produced from:			Other traits
				Glucose	Maltose	Sucrose
C. tuscaniae	+	−	+	+	+	−	Hippurate positive, tyrosine negative, contains mycolic acids, CAMP
							reaction negative
C. amycolatum	+	−	+	+	v	v	Lacks mycolic acids
C. argentoratense	+	−	v	+	−	−
C. atypicum	−	−	−	+	+	+	Lacks mycolic acids
C. aurimucosum	+	−	−	+	+	+
C. diphtheriae	−	−	−	+	+	−
C. coyleae	+	−	+	+	−	−
C. imitans	w	−	+	+	+	v	Tyrosine negative, CAMP
							reaction positive
C. glaucum	−	−	+	+	−	+
C. minutissimum	+	−	+	+	+	v	Hippurate negative, tyrosine positive
C. sanguinis	+	−	+	w	−	−
C. mucifaciens	+	−	+	+	−	v	Mucoid colonies
C. afermentans	+	−	+	−	−	−
C. riegelii	v	+	v	−	w	−
C. sundsvallense	v	+	v	+	+	+
C. thomsseni	+	+	+	+	+	+
C. appendicis	+	+	+	+	+	−

^aAbbreviations: w, weakly positive; v, variable; +, positive; −, negative.