''Cyclocosmia'' is a
genus of
mygalomorph trapdoor spiders in the family
Halonoproctidae, first described by
Anton Ausserer
Anton Ausserer (5 July 184320 July 1889)Maurer, Ferdinand: ''Nachruf an Dr. Anton Ausserer.'' Programm des kk. acad. Gymnasiums in Grätz. Graz 1890 was an Austrian naturalist specialising in spiders.Bonnet, Pierre: Bibliographia aranearum, Les ...
in 1871.
Originally placed with the
Ctenizidae
Ctenizidae is a small family of mygalomorph spiders that construct burrows with a cork-like trapdoor made of soil, vegetation, and silk. They may be called trapdoor spiders, as are other, similar species, such as those of the families Liphistii ...
, when the family split in 2018, this genus was placed with the
Halonoproctidae as the
type genus.
The name is derived from the Greek "kyklos" (), meaning "circle", and "kosmeo" (), meaning "to adorn".
Description
''C. ricketti'' females are long, with a disk diameter of . Their burrows are deep, and only the bottom portion of the burrow is silk lined.
These are trapdoor spiders, whose species are distinguished from each other by the pattern of the abdominal disk, the number of hairs on its seam, and the shape of the
spermathecae. They have abdomens that are abruptly truncated, ending in a hardened disc that is strengthened by a system of ribs and grooves. They use this to clog the entrance of their burrows when threatened,
a phenomenon called
phragmosis. The disks have strong spines around the edge, and they each have four
spinnerets just anterior to it. The posterior, retractable spinnerets are particularly large.
Species
it contains ten species:
*''
Cyclocosmia lannaensis''
Schwendinger, 2005 – China, Thailand
*''
Cyclocosmia latusicosta''
Zhu, Zhang & Zhang, 2006 – China, Vietnam
*''
Cyclocosmia liui''
Xu, Xu & Li, 2017 – China
*''
Cyclocosmia loricata''
(C. L. Koch
Carl Ludwig Koch (21 September 1778 – 23 August 1857) was a German entomologist and arachnologist. He was responsible for classifying a great number of spiders, including the Brazilian whiteknee tarantula and common house spider. He was born ...
, 1842) – Mexico
*''
Cyclocosmia ricketti''
(Pocock Pocock is a surname, and may refer to:
*Andrew Pocock (born 1955), British High Commissioner to Nigeria
* Barbara Pocock, one of the candidates of the 2022 Australian federal election
* Bill Pocock (1884–1959), English footballer
* Blair Pocock ...
, 1901) – China
*''
Cyclocosmia siamensis''
Schwendinger, 2005 – Thailand, Laos
*''
Cyclocosmia sublatusicosta''
Yu & Zhang, 2018 – China
*''
Cyclocosmia subricketti''
Yu & Zhang, 2018 – China
*''
Cyclocosmia torreya''
Gertsch
Willis John Gertsch (October 4, 1906 – December 12, 1998) was an American arachnologist. He described over 1,000 species of spiders, scorpions, and other arachnids, including the Brown recluse spider and the Tooth cave spider.
Gertsch was born ...
& Platnick, 1975 – USA
*''
Cyclocosmia truncata''
(Hentz, 1841) (
type
Type may refer to:
Science and technology Computing
* Typing, producing text via a keyboard, typewriter, etc.
* Data type, collection of values used for computations.
* File type
* TYPE (DOS command), a command to display contents of a file.
* Ty ...
) – USA
References
Further reading
* (2005): Two new ''Cyclocosmia'' (Araneae: Ctenizidae) from Thailand. ''Revue Suisse de Zoologie'' 112(1): 225-252
External links
''Cyclocosmia''at Bugguide.net
''Cyclocosmia''close up
Halonoproctidae
Mygalomorphae genera
Spiders of Asia
Spiders of North America
Taxa named by Anton Ausserer
{{Mygalomorphae-stub