Epedanidae Temporal range: | |
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Unicorn harvestman (Epedanidae) | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Arthropoda |
Subphylum: | Chelicerata |
Class: | Arachnida |
Order: | Opiliones |
Suborder: | Laniatores |
Infraorder: | Grassatores |
Superfamily: | Epedanoidea |
Family: | Epedanidae Sørensen, 1886 [in L. Koch & Keyserling] |
Genera | |
See text for list | |
Diversity | |
70 genera, c. 138 species |
Epedanidae is a family of the harvestman infraorder Grassatores with about 200 described species. They are the sister group of the Gonyleptoidea. [1]
The Epedanidae are endemic to Asia. The subfamily Dibuninae forms the predominant harvestman fauna of the Philippines. The other three subfamilies are more predominant in Indonesia, Malaysia and Thailand, and some are found in Burma and Nepal. Some species occur outside this region, in India, China, Vietnam and Japan. [1] One species is even endemic to New Guinea. [2] The oldest fossils of the family are known from the Cenomanian aged Burmese amber of Myanmar. [3]
The body size ranges from two to five millimeters, with thin legs ranging from six to 26 mm. The chelicerae are heavy with strong teeth in both fingers. The pedipalps are long and strong, with powerful spines lining the inside of the claw. Most species are light brown with few black mottling. Some species possess white patches on the scutum. The pedipalps are much more heavily spined in males, together with a swollen cheliceral hand. [1]
The type genus Epedanus is derived from Ancient Greek epedanos "weak, feeble".
For a list of all currently described species see List of Epedanidae species.
Dibuninae Roewer, 1912
Epedaninae Sørensen, in L. Koch 1886
Acrobuninae Roewer, 1912
Sarasinicinae Roewer, 1923
The Opiliones are an order of arachnids colloquially known as harvestmen, harvesters, harvest spiders, or daddy longlegs. As of April 2017, 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.
Opilio is a genus of harvestmen with 35 known species.
The Sclerosomatidae are a family of harvestmen with about 1,300 known species. One former subfamily has been recently removed to form a new family, Globipedidae.
The Triaenonychidae are a family of harvestmen with about 120 genera and more than 440 described species.
The Stylocellidae are a family of harvestmen with about 40 described species, all of which occur in Southern or Southeastern Asia. Members of this family are from one to seven millimeters long. While Stylocellus species have eyes, these are absent in the other two genera.
The Nemastomatidae are a family of harvestmen with about 170 described species in 16 recent genera. Several fossil species and genera are known.
Epedanoidea is a small superfamily of the Grassatores. It includes around 355 species distributed in Asia, primarily Southeast Asia.
The Stygnidae are a family of neotropical harvestmen within the suborder Laniatores.
Samoidae is a family of the harvestman infraorder Grassatores with about fifty described species.
Biantidae is a family of the harvestman infraorder Grassatores with about 130 described species.
Podoctidae is a family of the harvestman infraorder Grassatores with about 130 described species.
The Travuniidae are a small family of harvestman with little more than ten described species, within the suborder Laniatores.
The Cladonychiidae are a small family of harvestman with about 33 described species, within the suborder Laniatores.
Zalmoxis is a genus of harvestmen, within the Zalmoxidae family. They are found in tropical Australia, Borneo, New Guinea, the Philippines and on Pacific islands.
Acropsopilionoidea is a superfamily of harvestmen with 1 family and 3 genera, found in North America and the Southern Hemisphere.
Tithaeidae is a family of the harvestman infraorder Grassatores, Epedanoidea with about 40 described species.