The Opiliones (formerly Phalangida) are an order of arachnids, colloquially known as harvestmen, harvesters, harvest spiders, or daddy longlegs (see § Etymology below). As of July 2024, over 6,650 species of harvestmen have been discovered worldwide, [1] [2] [3] although the total number of extant species may exceed 10,000. [4]

The Opiliones (formerly Phalangida) are an order of arachnids colloquially known as harvestmen, harvesters, or daddy longlegs. According to the most updated count, over 6,660 species of harvestmen have been discovered worldwide, although the total number of extant species may exceed 10,000.

Harvestmen are eight-legged arachnids. Even though they are arachnids like spiders, harvestmen are not spiders. They are in the order Opiliones. More than 6,400 species of harvestmen have been discovered, although the real number of extant species may be more than 10,000. [1] .

Opiliones. Harvestmen (Opiliones) are delicate, shy forms that are among the largest arachnids in woodlands. Their bodies are small but their legs may be unusually long, suggesting that their habitat is litter surface or exposed areas.

2024年12月26日 · Group I: Opiliones (=Phalangida), "Harvestmen" --Commonly called "Daddy Long-legs," they DO NOT POSSESS VENOM nor a delivery system (see here)

2024年3月30日 · Harvestmen, also known as ‘harvest spiders’ or ‘daddy longlegs,’ are arthropods belonging to the arachnid order Opiliones. Despite their superficial resemblance to spiders, they are distinguished by their elongated bodies and characteristic fused cephalothorax and abdomen, which give them a single oval-shaped structure.

2017年2月22日 · Opiliones are iconic arachnids with a Palaeozoic origin and a diversity that reflects ancient biogeographic patterns dating back at least to the times of Pangea.

There are over 6,000 species of opiliones. Found in terrestrial habitats worldwide, on all continents except for Antarctica, harvestmen play important ecological roles as part of food chains.

With their globular body and long thin legs, Harvestmen are unmistakable. Unlike true spiders, the body of a Harvestman consists of a single part rather than two.

2019年11月13日 · These eight-legged arachnids are commonly misidentified as spiders, but they actually belong to their own, separate group – the order Opiliones. Though daddy longlegs look similar to true spiders, there are some noticeable differences between the two groups.