Sri Lanka is a tropical island situated close to the southern tip of India. The invertebrate fauna is as large as it is common to other regions of the world. There are about 2 million species of arthropods found in the world, and still it is counting. So many new species are discover up to this time also. So it is very complicated and difficult to summarize the exact number of species found within a certain region.
The following list provide the aphid fauna of Sri Lanka.
Phylum: Arthropoda
Class: Insecta
Order: HemipteraSuperfamily: Aphidoidea
Aphids are minute insects that are plant sap feeders. They affect largely to economically valuable plants greatly, so aphids are of economic importance. About 4500 species with 500 genera are described in aphids. Out of them, Sri Lanka comprises 74 species in 46 genera and 6 subfamilies. 2 endemic aphid species found on Sri Lanka.
Subfamily: Drepanosiphinae
Subfamily: Greenideinae
Subfamily: Hormaphidinae
Subfamily: Lachninae - Giant aphids