Sandfly
Sandfly The group is the Phlebotominae , a subfamily of flies. Parasitic diseases spread by the flies include leishmaniasis, bartonellosis and pappataci fever. In the New World leishmaniasis is spread by sand flies in the genus Lutzomyia . Lutzomyia often live in caves, where their main hosts are bats. In the Old World sand flies in the genus Phlebotomus spread leishmaniasis. Phlebotomine females, and only females, suck blood from various mammals, reptiles and birds. Some species are selective, whereas others bite any suitable host they find. As far as is known all species need a blood meal for every following clutch of eggs after the first. Proteins and other nutrients in the blood enable the female to produce eggs. The flies use their mouthparts to start the host bleeding. They then suck up the exposed blood. Like practically all blood-feeding parasites, they inject biochemicals that inhibit blood clotting, plus some that stimul