P. pilosum is recorded for the first time in Brazil. This is a species of chewing louse that participates as an invertebrate host in the biological cycle of a bird filarid. The possibility for this transmission to be occurring in Brazil is discussed and the reports about the participation of these parasites as bioagents spreaders are summarized.

Occurence ofDentocarpus silvai silvai, Dusbabek & Cruz, 1966 (Acari: Chirodiscidae) on two molossids (Mammalia: Chiroptera) species in Rio de Janeiro state, Brazil -In 2001 mites from three