 Lesson split the scissor-tailed kite into a separate genus as "Chelictinia Riocourii" in 1843, leaving "N. furcatus" as a junior synonym of "Elanoïdes furcatus" Vieillot, 1818.An alternative approach is to consider "N. riocourii" the type species of "Nauclerus", giving "Nauclerus" Vieillot 1825 precedence over "Chelictinia" Lesson 1843.The effect would be to keep "riocourii" in "Nauclerus", and move "furcatus" to "Elanoides".