Key to Florida species of Psylla

1. Antennal segments 5–9 light with dark apex. Metatibia with 5 apical sclerotized spurs. On Carpinus L................................................................. P. carpinicola Crawford

— Antennal segments 5–9 completely dark brown or black. Metatibia with 6 apical sclerotized spurs. On Prunus L...................................................... P. sanguinea (Provancher)