Published online by Cambridge University Press: 31 May 2012
Characters of head profile and abdominal apodemes are used to supplement the variable character of crown shape in determining the nearctic species of Xerophloea. These characters are illustrated for X. peltata (Uhl.), X. minor Laws., X. robusta Laws., X. major Bak., and X. majesta Laws., and a key for species recognition is included. On the basis of these characters, only X. peltata is found in Canada.