The New Zealand long-legged harvestmen of the family Neopilionidae often exhibit remarkable variation within a species, with males having massive chelicerae many times the size of females'. Males can also vary within a species, with some males much larger than others. As a result, members of one species may be mistaken for multiple different species. I want to create an up-to-date guide using comparative morphology to allow identification of New Zealand long-legged harvestmen.