The susceptibility of wild caught sand flies to infection by a subspecies of Leishmania mexicana isolated from Proechimys iheringi denigratus (Rodentia, Echimyidae).

Several species of wild caught sand flies were collected in the same site where a subspecies of Leishmania mexicana was isolated from the rodent Proechimys iheringi denigratus. The absence of natural infection in these sand flies permitted us to test, with relative assurance, the susceptibility of wild caught females to infection by this parasite. The success obtained in these experimental infections suggest that one or more of the sand fly species encountered in high numbers in the same site where the infected rodents were captured may be the vector(s) of this subspecies of L. mexicana.