Illustrated keys to the medically important mosquitos of Thailand.

The major mosquito-borne diseases in Thailand are malaria, dengue, Japanese encephalitis, and filariasis. The newly revised and illustrated keys to adult female and fourth instar larval mosquitos presented in this paper will enable public health workers to rapidly identify mosquito vectors of these diseases and to distinguish them from other species in the same genera. Keys are provided to identify 4 medically important genera from among any mosquito in Thailand. The 4 genera are treated in more detail with keys to 9 subgenera, 11 groups or subgroups, and 38 individual species considered to be of medical importance.