| geographical and seasonal distribution of the bluetongue virus vector, culicoides imicola, in central italy. | following the first incursion of bluetongue virus (btv) into italy, the geographical and seasonal distribution of the biting midge culicoides imicola kieffer (diptera: ceratopogonidae), the main vector of btv and african horse sickness virus, was investigated in two regions of central italy (lazio and tuscany). surveillance of culicoides was carried out between july 2001 and december 2002 using light traps: 1917 collections were made in 381 trap sites, well distributed across both regions. durin ... | 2003 | 14651652 |