We report on fleas collected from small mammals in two forests, a lowland s
emideciduous dipterocarp forest and a highland evergreen forest, in souther
n Viet Nam. In the lowland forest, only one species of nea (Xenopsylla vexa
bilis Jordan) infested a single species of rodent [Berylmys berdmorei (Blyt
h)]. In the highland forest, seven species of fleas were collected fi om ei
ght species of small mammals. Three species of ness, Lentistivalius insolli
(Traub), Lentistivalius occidentayunnanus Li, Xie & Gong, and Gryphopsylla
jacobsoni (Jordan & Rothschild), collected from mammals in the highland fo
rest represent new records for Viet Nam.