Climate-change-sensitive
Guides
Phortica variegata
variegated fruit fly
Phortica variegata is a small vinegar fly in the family Drosophilidae, distinguished by its unusual zoophilic behavior. Unlike most drosophilids, adult males feed on the lacrimal secretions (tears) of mammals, including humans, dogs, foxes, and other carnivores. This lachryphagous behavior makes it the primary European vector of Thelazia callipaeda, a zoonotic eyeworm that causes ocular infections in mammals. The species is native to Europe and has been introduced to the United States, where it has demonstrated vector competence for the parasite. Climate change is projected to alter its distribution significantly, with suitable habitats shifting toward Mediterranean coastal regions while declining in central-southern-eastern European transitional areas.