Character;"Lophyrus spinosus";"Hypsilurus auritus"
"Number of scales between nasal and first supralabial";Three;Single
"Size of enlarged scales adjacent to the infralabials";"Equal in size until approx. 6th/7th infralabial scale";"Decreasing in size, largest adjacent to the 1st infralabial scale"
"Shape of scale of nuchal";"Lanceolate, longer than the diameter of the tympanum";"Triangular, smaller than the diameter of the tympanum"
"Size of first dorsal crest scales";"Nearly equal in size to the ones of the nuchal crest";"Smaller than largest nuchal crest scale"
"Shape of scales of dorsal crest";"Lanceolate and backward curved; initially larger or as large as the diameter of the tympanum";"Triangular, much smaller than the diameter of the tympanum"