Harvestman

The Opiliones, formerly called Phalangida, are an order of arachnids colloquially known as harvestmen, harvesters, daddy longlegs or granddaddy longlegs. Over 6,650 species have been discovered worldwide, though the total number of extant species may exceed 10,000, and representatives can be found on every continent except Antarctica. Though superficially similar to and often misidentified as spiders, they are a distinct order, easily told apart by their fused body regions and single pair of eyes in the middle of the cephalothorax, where a spider has a distinct abdomen separated from the cephalothorax and three to four pairs of eyes.