Tonate and Guama-group viruses isolated from mosquitoes in both a savannah and coastal area in Surinam.

Isolation of arboviruses was attempted from October 1972 till the end of 1973 from mosquitoes caught in both a savannah forest near Powaka and a coastal area near "Fernandesweg" in Surinam. Two types of arbovirus were isolated: eleven strains of Tonate and ten strains of Guama-group. In the savannah area ten strains of Tonate and five of Guama-group were isolated, whereas in the coastal area the numbers were one and five, respectively. All strains in the savannah area were isolated from pools of Culex portesi. In the coastal area the strains were obtained as follows: one Tonate strain from a pool of Culex taeniopus, four Guama-group strains from pools of Coquillettidia venezuelensis, and one from a pool of Culex spp.