genera

number of spurs on metabasitarsus
number of apical spurs on metatibia
cell cu1of forewing
antennal length



2
5

usually low
shorter than twice head width



2
4
low
shorter than twice head width
Chamaepsylla



2
5
high
shorter than twice head width
Spanioneura



2
5-8
high
shorter than twice head width
Psylla buxi



2
5-8
low
more than twice head width
Baeopelma,Psylla



1-2
5-6

high
shorter than twice head width
Acizzia



0-1
5
low
twice as long as head width or more
Arytaina,Arytainilla,Livilla



2
5
high
shorter than twice head width
Cyamophila