SUMMARY
Plastic artificial rearing cups were placed at 0,1,6 and 11 meters in a "terra firme" forest near Manaus, Amazonas. This work describes the types of platform used to study the vertical stratification of ovoposition of certain Culicidae. Limatus durhami, Limatus flavisetosus, Culex bonnei, Culex mathesoni, Culex urichi, Culex originator, Trichoprosopon d. digitatum, Toxorhynchites h. haemorrhoidalis, Wyemyia aphobema and Orthopodomyia sp. The first 6 species were collected at all levels their population size diminished with heigth. Only Tr. d. digitatum was found at 1 and 6 meters: its population increased with the heigth of the rearing pots. T. h. haemorrhoidalis was collected only at 1 and 6 meters. Orthopodomyia sp. was collected only at 6 meters and W. aphobema only at 11 meters.