Micropholcommatidae

The Micropholcommatidae are a family of araneomorph spiders with about 66 described species in 19 genera. Alternatively they are treated as the subfamily Micropholcommatinae of the family Anapidae. Micropholcommatids are extremely small, with body lengths typically between 0.5 and 2 mm. They are usually found among leaf litter or moss.

Distribution

Many genera are endemic to New Zealand and Australia, with others found also in South America.

Taxonomy

The families Micropholcommatidae and Textricellidae were synonymized with the Symphytognathidae by Forster (1959), but again split from it in 1977. Later they were considered to be only one family, namely Micropholcommatidae, by Platnick & Forster (1986). Although they were synonymized with Anapidae by Schütt (2003), this move was not followed by all authors, although accepted in a 2014 review of the systematics of the orb-weaving spiders. The Micropholcommatidae have been assigned to Palpimanoidea, Archaeoidea, and at the latest Araneoidea.

Genera

As of October 2015, the World Spider Catalog accepted 19 extant genera:

Algidiella Rix & Harvey, 2010 – Auckland Islands
Austropholcomma Rix & Harvey, 2010 — Australia
Eperiella Rix & Harvey, 2010 – Australia, Chile
Epigastrina Rix & Harvey, 2010 — Australia
Eterosonycha Butler, 1932 — Australia
Gigiella Rix & Harvey, 2010 – Australia, Chile
Guiniella Rix & Harvey, 2010 – New Guinea
Micropholcomma Crosby & Bishop, 1927 — Australia
Normplatnicka Rix & Harvey, 2010 – Chile, Australia
Olgania Hickman, 1979 — Australia
Patelliella Rix & Harvey, 2010 – Lord Howe Islands
Pua Forster, 1959 — New Zealand
Raveniella Rix & Harvey, 2010 — Australia
Rayforstia Rix & Harvey, 2010 – Australia, New Zealand and associated islands
Taliniella Rix & Harvey, 2010 – New Zealand
Taphiassa Simon, 1880 – Australia, New Zealand and associated islands
Teutoniella Brignoli, 1981 — Brazil, Chile
Tinytrella Rix & Harvey, 2010 – New Zealand
Tricellina Forster & Platnick, 1989 — Chile
Formerly recognized genera:

Parapua Forster, 1959 – the only species is placed in Taphiassa
Textricella Hickman, 1945 – considered a junior synonym of Eterosonycha
^ "Family Micropholcommatidae Hickman, 1944". World Spider Catalog. Natural History Museum Bern. Retrieved 2015-10-13.
^ "Taxon details Taphiassa punctata (Forster, 1959)". World Spider Catalog. Natural History Museum Bern. Retrieved 2015-10-13.
^ "Gen. Eterosonycha Butler, 1932". World Spider Catalog. Natural History Museum Bern. Retrieved 2015-10-13.
Fossil species

In 2007 the first fossil species of this family was described from Early Eocene amber (about 53 million years ago), and classified in subfamily Textricellinae. In contrast to living species it was found in the Northern Hemisphere.

Cenotextricella Penney, 2007
Cenotextricella simoni Penney, 2007
^ Penney et al. 2007

source - Wikipedia
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