***WARNING THESE POSTS WILL CONTAIN CLOSE UPS OF OUR LITTLE FRIENDS***
Daddy Longleg aka. Harvestmen can provide some natural biocontrol in the garden. They've been known to feed on small arthropods such as aphids, beetles, caterpillars, earthworms, flies, mites, small slugs, snails and spiders, as well as faecal matter and fungi. You should just leave them be, unless they are in your way. Then we suggest moving them delicately (coaxing on a glove, catching in a cup, ect.) and placing them in a like environment.
A common harvestman is a species of arachnid, meaning it's closely related to scorpions, spiders and mites. They're often misidentified as spiders because of their eight spindly spider-like legs. They can be distinguished from spiders by the round, fused body region. Likewise, spiders possess four pairs of eyes, whereas harvesters possess only one.
Many species are omnivorous, feeding on both small insects, plant materials and fungi. They're also scavengers who feed on dead organisms and dung. They are frequent visitors to gardens but can be seen in fields, hedges, urbanised areas, walls and bridges.