Opiliones
Sign in to saveThe Opiliones (formerly Phalangida) are an order of arachnids, colloquially known as harvestmen, harvesters, daddy long legs, or granddaddy long legs. Over 6,650 species of harvestmen have been discovered worldwide, although the total number of extant species may exceed 10,000. The order Opiliones includes five suborders: Cyphophthalmi, Eupnoi, Dyspnoi, Laniatores, and Tetrophthalmi, which were named in 2014.
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Opiliones, commonly called harvestmen or daddy long-legs, are arachnids (relatives of spiders and scorpions) with over 6,650 known species worldwide, though the actual total may exceed 10,000. They matter as a diverse and widespread group of predatory arthropods that play ecological roles in ecosystems, and their variety—organized into five suborders—makes them important subjects for understanding arachnid evolution and biodiversity.
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Article
29 sectionsContents
- Description
- Behavior
- Antipredator defences
- Primary defences
- Crypsis
- Aposematism and mimicry
- Secondary defences
- Thanatosis
- Freezing
- Bobbing
- Autotomy
- Fleeing
- Stridulation
- Retaliation
- Chemical
- Endangered status
- Misconception
- Research
- Phylogeny
- Systematics
- Fossil record
- Paleozoic
- Described species
- Mesozoic
- Cenozoic
- Etymology
- Further internal navigation links
- References
- External links
The Opiliones (formerly Phalangida) are an order of arachnids, colloquially known as harvestmen, harvesters, daddy long legs, or granddaddy long legs. Over 6,650 species of harvestmen have been discovered worldwide, although the total number of extant species may exceed 10,000. The order Opiliones includes five suborders: Cyphophthalmi, Eupnoi, Dyspnoi, Laniatores, and Tetrophthalmi, which were named in 2014.
Representatives of each extant suborder can be found on all continents except Antarctica.