Mindarus harringtoni is an extinct species of aphid. The insect was discovered when Richard Harrington, a scientist and vice-president of the Royal Entomological Society of London, won an auction on eBay for a fossilized specimen, later to discover it was an unknown species. The fossil was bought from an individual from Lithuania. The insect itself is 3–4 millimetres (0.12–0.16 in) long and was encased in a piece of amber 40 to 50 million years ago. The fossil is now housed in the Natural History Museum.