What is "leiobunum"

Leiobunum is a genus of the harvestman family Sclerosomatidae with more than a hundred described species. Contrary to popular belief, they are not spiders, although they share resemblance. This is where the title of "harvestman spider" comes in play. Leiobunum are also known as "daddy long legs". They are arachnids, in the order Opiliones, harvestmen.