Six-eyed spiders are
spider
Spiders (order Araneae) are air-breathing arthropods that have eight legs, chelicerae with fangs generally able to inject venom, and spinnerets that extrude silk. They are the largest order of arachnids and rank seventh in total species ...
s that, unlike most spider species miss the principal pair of eyes, leaving them with only six eyes instead of the usual eight.
List
''This list is incomplete''
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Araneomorphae
The Araneomorphae (also called the Labidognatha) are an infraorder of spiders. They are distinguishable by chelicerae (fangs) that point diagonally forward and cross in a pinching action, in contrast to the Mygalomorphae (tarantulas and their ...
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Haplogynae
The Haplogynae or haplogynes are one of the two main groups into which araneomorph spiders have traditionally been divided, the other being the Entelegynae. Morphological phylogenetic studies suggested that the Haplogynae formed a clade; more recen ...
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Scytodoidea
Scytodoidea is a taxon of araneomorph spiders, at the rank of superfamily. It contains four families:
* Drymusidae
* Periegopidae
* Scytodidae
* Sicariidae
Phylogeny
The monophyly of the group has been confirmed in morphological studies. O ...
''-superfamily of six-eyed spiders
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Drymusidae''
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Periegopidae
''Periegops'' is a genus of spiders with six eyes instead of the usual eight. It is the only genus in its family (Periegopidae) and has three described species. It was long considered to be members of Sicariidae or Segestriidae until Raymond For ...
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Scytodes
''Scytodes'' is a genus of spitting spiders that occur all around the world. The most widely distributed species is ''Scytodes thoracica
''Scytodes thoracica'' is a spitting spider, so called because it spits a venomous sticky silken substanc ...
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Sicariidae
Sicariidae is a family of six-eyed venomous spiders known for their potentially necrotic bites. The family consists of three genera and about 160 species. Well known spiders in this family include the brown recluse spider and the six-eyed sand ...
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Leptonetoidea''-superfamily of six-eyed spiders
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Leptonetidae
Leptonetidae is a relatively primitive family of spiders first described by Eugène Simon in 1890. It is made up of tiny haplogyne spiders, meaning they lack the hardened external female genitalia. Their six eyes are arranged in a semicircle o ...
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Ochyroceratidae
Ochyroceratidae is a six-eyed spider family, with 165 described species in ten genera. They are common inhabitants of caves and the tropical forest litter of South Africa, the Caribbean, Asia and South America. Considered an ecological counterpar ...
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Telemidae''-predominantly six-eyed, but some species with none.
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Pholcoidea''
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Diguetidae
Coneweb spiders (Diguetidae) are six-eyed haplogyne spiders that live in tangled space webs, fashioning a cone-like central retreat where they hide and lay eggs. It is a small family, containing only two genera with fifteen species and is conf ...
''-family of six-eyed spiders
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Pholcidae''-predominantly eight eyed, but some species with six.
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Pholcinae''
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Belisana''
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Belisana aliformis'' (
at Wikispecies)
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Belisana huberi'' (
at Wikispecies)
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Belisana lamellaris'' (
at Wikispecies)
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Belisana zhangi'' (
at Wikispecies)
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Khorata''
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Khorata diaoluoshanensis'' (
at Wikispecies)
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Caponioidea''
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Caponiidae
Caponiidae is a family of ecribellate haplogyne spiders that are unusual in a number of ways. They differ from other spiders in lacking book lungs and having the posterior median spinnerets anteriorly displaced to form a transverse row with the a ...
''-family with species with 8, 6, 4 and 2 eyes and some with a changing number of eyes
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Tetrablemmidae
Tetrablemmidae, sometimes called armored spiders, is a family of tropical araneomorph spiders first described by Octavius Pickard-Cambridge in 1873. It contains 126 described species in 29 genera from southeast Asia, with a few that occur in Afri ...
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Dysderoidea''-superfamily of six-eyed spiders
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Dysderidae
Dysderidae, also known as woodlouse hunters, sowbug-eating spiders, and cell spiders, is a family of araneomorph spiders first described by Carl Ludwig Koch in 1837. They are found primarily in Eurasia, extending into North Africa with very few ...
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Oonopidae
Oonopidae, also known as goblin spiders, is a family of spiders consisting of over 1,600 described species in about 113 genera worldwide, with total species diversity estimated at 2000 to 2500 species. The type genus of the family is ''Oonops'' Ke ...
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Orsolobidae''
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Segestriidae
Tube-dwelling spiders (Segestriidae) are a family of araneomorph spiders first described by Eugène Simon in 1893. It consists of five genera, two large and widespread, '' Segestria'' and '' Ariadna'', and three smaller genera, '' Citharoceps' ...
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Trogloraptoridae''
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Entelegynae
The Entelegynae or entelegynes are a subgroup of araneomorph spiders, the largest of the two main groups into which the araneomorphs were traditionally divided. Females have a genital plate ( epigynum) and a "flow through" fertilization system; m ...
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Archaeoidea
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Micropholcommatidae
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Micropholcommatinae
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Micropholcommatini
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Austropholcomma
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Austropholcomma walpole'' (
at Wikispecies)
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Araneoidea
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 moved to the Palpimanoidea have more recently ...
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Anapidae''
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Comaroma
''Comaroma'' is a genus of araneomorph spiders in the family Anapidae, first described by Philipp Bertkau
Philipp Bertkau (11 January 1849 – 22 October 1894) was a German zoologist born in Cologne.
He studied natural sciences at the Univers ...
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Comaroma hatsushibai'' (
at Wikispecies)
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Dictynoidea''
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Cybaeidae''
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Cybaeus''
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Cybaeus yoshiakii'' (
at Wikispecies)
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Dictynidae
Dictynidae is a family of cribellate, hackled band-producing spiders first described by Octavius Pickard-Cambridge in 1871. Most build irregular webs on or near the ground, creating a tangle of silken fibers among several branches or stems of one ...
''-predominantly eight eyed, but some species with six.
References
Bibliography
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External links
*{{cite web , url=http://bugguide.net/node/view/84423, title=Spider Eye Arrangements, last1=Lynette, date=23 October 2006, website=
BugGuide
BugGuide (or BugGuide.net) is a website and online community of naturalists, both amateur and professional, who share observations of arthropods such as insects, spiders, and other related creatures. The website consists of informational guide ...
, access-date=16 May 2015, quote=
Six eyes
Spider anatomy
Eye