Harvestmen (Opiliones), known as daddy longlegs in English or “blind spider” in Mandarin, are not blind and are not spiders. As their name “daddy longlegs” suggests, their most obvious characteristic is their long legs. They belong to the same class as spiders, Arachnida, and have eight legs. As such, they are often misidentified as spiders. However, they do not produce silk thread or webs and have very small chelicerae with no venom glands. Moreover, spiders possess three or four pairs of eyes, while daddy longlegs possess only one pair. While some cave-dwelling spiders have no eyes and are blind, most spider species have eyes. The eyes of harvestmen “stand” on a relatively high point on the flat cephalothorax and up close are very cute. In terrestrial ecosystems, daddy longlegs play important roles as scavengers of dead animals found in the soil, amid shrubs, or on trees.