Arachnid superfamilies

Araneoidea is a taxon of araneomorph spiders, termed "araneoids", treated as a superfamily. As with many such groups, its circumscription has varied; in particular some families that had at one time been moved to the Palpimanoidea have more recently been restored to Araneoidea. A 2014 treatment includes 18 families, with the araneoids making up about 26% of the total number of known spider species; a 2016 treatment includes essentially the same taxa, but now divided into 17 families.

The Dysderoidea are a clade or superfamily of araneomorph spiders. The monophyly of the group, initially consisting of the four families Dysderidae, Oonopidae, Orsolobidae and Segestriidae, has consistently been recovered in phylogenetic studies. In 2014, a new family, Trogloraptoridae, was created for a recently discovered species Trogloraptor marchingtoni. It was suggested that Trogloraptoridae may be sister to the remaining members of the Dysderoidea clade. However, a later study found that Trogloraptoridae was placed outside the Dysderoidea and concluded that it was not part of this clade.

Lycosoidea is a clade or superfamily of araneomorph spiders. The traditional circumscription was based on a feature of the eyes. The tapetum is a reflective layer at the back of the eye, thought to increase sensitivity in low light levels. Lycosoids were then defined by having a "grate-shaped" tapetum. Research from the late 1990s onwards suggests that this feature has evolved more than once, possibly as many as five times, so that the original Lycosoidea is paraphyletic. Studies published in 2014 and 2015 suggest that a smaller group of families does form a clade.

The Chthonioidea are a superfamily of pseudoscorpions, representing the earliest diverging and most primitive living pseudoscorpions. The superfamily contains two families. Pseudotyrannochthoniidae — worldwide (c. 5 genera, 50 species) Chthoniidae — worldwide ( 40 + genera, 600+ species)

The Pholcoidea or pholcoids are a superfamily of araneomorph spiders. The group has been circumscribed to contain the following three families:

The Austrochiloidea or austrochiloids are a group of araneomorph spiders, treated as a superfamily. The taxon contains two families of eight-eyed spiders: Austrochilidae Zapfe, 1955 Gradungulidae Forster, 1955

Samooidea is a large superfamily in the Grassatores group of harvestmen. It includes around 380 species distributed throughout the tropics. They are characterized by the complex male genitalia, with eversible complementary sclerites.

The Cheliferoidea are a superfamily of pseudoscorpions.

Tetranychoidea is a superfamily of mites in the order Trombidiformes. There are about 5 families and more than 2,200 described species in Tetranychoidea.

REDIRECT Pseudoscorpion#Classification

Scytodoidea is a taxon of araneomorph spiders, at the rank of superfamily. It contains four families: Drymusidae Periegopidae Scytodidae Sicariidae

The Gnaphosoidea or gnaphosoids are a superfamily of araneomorph spiders with seven families. A 2014 study did not find the group to be monophyletic.

Dermanyssoidea is a superfamily of mites, including most of the mites which parasitise vertebrates.

Phalangioidea is a superfamily of the harvestman suborder Eupnoi with five recognized families and more than 1,500 species.

The Palpimanoidea or palpimanoids, also known as assassin spiders, are a group of araneomorph spiders, originally treated as a superfamily. As with many such groups, its circumscription has varied. , the following five families were included: Archaeidae Huttoniidae Mecysmaucheniidae Palpimanidae Stenochilidae

Gonyleptoidea is the most diverse superfamily of the Grassatores. It includes around 2,500 species distributed in the Neotropics. They are characterized by the simplified male genitalia, with the glans free subapical in the truncus.

superfamily of arachnids

The Titanoecoidea or titanoecoids are a proposed taxon of araneomorph spiders at the superfamily rank. The taxon contains two families of spiders, Phyxelididae and Titanoecidae. Although some phylogenetic studies have shown these two families to form a clade, other studies have not, placing Titanoecidae outside the RTA clade while Phyxelididae is placed inside it. A 2011 classification of spider families leaves both Phyxelididae and Titanoecidae outside the RTA clade as "unplaced non-Orbiculariae families". The status of the group remains unclear .

Travunioidea is a superfamily of armoured harvestmen in the order Opiliones. There are 4 families and around 75 described species in Travunioidea.

The Theraphosoidea are a superfamily of mygalomorph spiders. They contain two families of spiders: Theraphosidae, the true tarantulas Paratropididae, the bald-legged spiders

Triaenonychoidea is a superfamily of armoured harvestmen in the order Opiliones. There are 4 families and more than 440 described species in Triaenonychoidea.

The Analgoidea are a superfamily of the Acarina (mite) order Sarcoptiformes. They contain many feather mites, being ectoparasites of birds and occasionally mammals.

The Deinopoidea or deinopoids are group of cribellate araneomorph spiders that may be treated as a superfamily. As usually circumscribed, the group contains two families: Deinopidae and Uloboridae.

Trombidioidea is a superfamily of mites in the order Trombidiformes. There are about 8 families and at least 430 described species in Trombidioidea. thumb|Trombidium breei

Cheyletoidea is a superfamily of mites in the order Trombidiformes. They include parasites of other arthropods and vertebrates, though some Cheyletidae are instead free-living predators.

Raphignathoidea is a superfamily of the Acari (mite) order Trombidiformes, comprising 1087 species in 62 genera and 12 families.

Epedanoidea is a small superfamily of the Grassatores.

Sarcoptoidea is a superfamily of mites, including many associated with mammals.

Licneremaeoidea is a superfamily of mites in the order Oribatida. There are about 6 families and more than 170 described species in Licneremaeoidea.

Oripodoidea is a superfamily of oribatids in the order Oribatida. There are about 19 families and at least 1,300 described species in Oripodoidea.

Assamioidea is the most diverse superfamily of the Grassatores. It includes around 540 species distributed in the Neotropics.

Hygrobatoidea is a superfamily of water mites found in North America.