genera
number of spurs
on metabasitarsus
number of apical spurs
on metatibia
cell cu
1
of forewing
antennal length
back
2
5
usually low
shorter than twice head width
Cacopsylla
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