Caponioidea
Encyclopedia
The Caponioidea are a superfamily
Taxonomic rank
In biological classification, rank is the level in a taxonomic hierarchy. Examples of taxonomic ranks are species, genus, family, and class. Each rank subsumes under it a number of less general categories...

 of araneomorph
Araneomorphae
The Araneomorphae are a suborder of spiders. They are distinguished by having fangs that oppose each other and cross in a pinching action, in contrast to the Mygalomorphae , which have fangs that are nearly parallel in alignment.- Distinguishing characteristics :Note the difference in the...

 spiders. They contain two families
Family (biology)
In biological classification, family is* a taxonomic rank. Other well-known ranks are life, domain, kingdom, phylum, class, order, genus, and species, with family fitting between order and genus. As for the other well-known ranks, there is the option of an immediately lower rank, indicated by the...

 of six-eyed spiders:
  • Caponiidae
    Caponiidae
    Spiders of the ecribellate haplogyne family Caponiidae are unusual in that most species have only two eyes, which is unheard of in other spiders. Other species have four, six or eight eyes...

  • Tetrablemmidae
    Tetrablemmidae
    The Tetrablemmidae are a spider family with 126 described species in 29 genera that occur throughout the world tropics. They are sometimes called armored spiders....



Some species of Caponiidae have four, or two eyes.
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