The 11th annual Latin American symposium presented by the American Mosquito ControlAssociation (AMCA) was held as part of the 67th Annual Meeting in Dallas, TX, in February 2001. The principalobjective, as for the previous 10 symposia, was to promote participation in the AMCA by vector control specialists,public health workers, and academicians fiom Latin America. This publication includes summaries of45 presentations that were given orally in Spanish or presented as posters by participants from 8 countries inLatin America. Topics addressed in the symposium included results fiom chemical and biological control programsand studies; studies of insecticide resistance; and population genetics, molecular, ecological, and behavioralstudies of vectors of dengue (Aedes aegypti), malaria (Anopheles albimanus and Anopheles aquasalis),leishmaniasis (Lutzomyia), murine typhus, and Chagas' disease (Triatona). Related topics included biology andcontrol of Rhodnius, scorpions, Loxosceles spp., Chironomus plumosus, and Musca domestica.