8 Fleas of Eastern United States 



SUBORDER FRACTICIPITA OUDEMANS 



Fracticipita Oudemans, 1908, Tijd. v. Ent., 51: 92. 



This suborder is represented in the East by but two families. 



Key to the Families of Fracticipita 



Head with two separated genal spines only in the genus Peromyscopsylla; 



the spines not modified into broad plates (not on bats) 



Hystrichopsyllidae, p. 77 



Head with two separated genal spines modified to form broad plates 

 (on bats) Ischnopsyllidae, p. 104 



