Ricinulei is a small order of arachnids. Like most arachnids, they are predatory, eating small arthropods. They occur today in west-central Africa (Ricinoides) and the Americas (Cryptocellus and Pseudocellus) as far north as Texas. As of 2021, 91 extant species of ricinuleids have been described worldwide, all in the single family Ricinoididae.[1] In older works they are sometimes referred to as Podogona. Due to their obscurity they do not have a proper common name, though in academic literature they are occasionally referred to as hooded tickspiders.
In addition to the three living genera, there are fossil species from the upper Carboniferous of Euramerica and the Cretaceous Burmese amber.
^Valdez-Mondragón, Alejandro; Juárez-Sánchez, Alma R. (2021-02-23). "A new epigean species of ricinuleid of the genus Pseudocellus (Arachnida: Ricinulei: Ricinoididae) from a tropical sub-deciduous forest in Oaxaca, Mexico". The Journal of Arachnology. 48 (3). doi:10.1636/JoA-S-20-014. ISSN 0161-8202. S2CID 232021020.
Ricinulei is a small order of arachnids. Like most arachnids, they are predatory, eating small arthropods. They occur today in west-central Africa (Ricinoides)...
so that these animals appear to have ten legs. The larvae of mites and Ricinulei have only six legs; a fourth pair usually appears when they moult into...
lateral plates. This character is shared with ricinuleids (Ricinulei) (see also Ricinulei#Relationships). As in other arachnids, the body is divided into...
Cryptocellus is an arachnid genus in the order Ricinulei, first described by John Westwood in 1874. It is native to the Neotropics. As of October 2022[update]...
chelicerates places the Xiphosura within the Arachnida as the sister group of Ricinulei., but others still retrieve a monophyletic arachnida. Although well behind...
Arachnida, with a 2019 molecular analysis placing them as the sister group of Ricinulei. The family name Limulidae comes from the genus Limulus, from the word...
studies place Xiphosura within Arachnida, often as the sister group of Ricinulei; included among them are taxonomically comprehensive analyses of both...
lungs absent; microwhip scorpions, harvestmen, Acarina, pseudoscorpions, Ricinulei, and sunspiders Tetrapulmonata have two pairs of book lungs found on the...
Pseudocellus is an arachnid genus in the order Ricinulei, first described by Norman Platnick in 1980. It is native to the Neotropics. As of October 2022[update]...
of two segments and occurs in the orders Pseudoscorpiones, Solifugae, Ricinulei, and Araneae (e.g., brown recluse, cellar spider, and crevice weaving...
is used to hold the female during copulation a hood over the head of Ricinulei arachnids a synonym for Conus, the cone snails, a genus of predatory sea...
is a list of the described species of Ricinulei (hooded tickspiders). The data is taken from the World Ricinulei Catalog. Cryptocellus Westwood, 1874 Cryptocellus...
sub-chelate (pincer-like) pedipalps are found in several arachnid groups (Ricinulei, Uropygi, scorpions and pseudoscorpions) but the chelae in most of these...
arachnid orders of the world: Amblypygi, Uropygi, Schizomida, Palpigradi, Ricinulei and Solifugae. CSIRO Publishing. pp. 3–58. ISBN 978-0-643-06805-6. Engel...
indicate facultative plastron respiration in Cryptocellus adisi (Arachnida, Ricinulei) from Central Amazonia". Studies on Neotropical Fauna and Environment...
order Ricinulei". Annals of the Entomological Society of America. 22 (4): 583–600. doi:10.1093/aesa/22.4.583. "Ricinoides Ewing, 1929". World Ricinulei Catalog...
comparable or even larger than the extant Mastigoproctus have. The largest Ricinulei to ever exist was Curculioides bohemondi with a body length of 21.77 mm...
†Haptopoda Order Palpigradi (Microwhip scorpions) Order †Uraraneida Order Ricinulei (Hooded tickspiders) Order Schizomida (Short-tailed whip scorpions) Order...
camel spiders (Solifugae) or a larger clade comprising horseshoe crabs, Ricinulei, and Arachnopulmonata (scorpions, pseudoscorpions, and Tetrapulmonata)...
Harvey, M.S. (2003c). Catalogue of the smaller arachnid orders of the world: Amblypygi, Uropygi, Schizomida, Palpigradi, Ricinulei and Solifugae. v t e...
occurs in Costa Rica. On the female of Cryptocellus goodnighti Arachnida: Ricinulei. Norman I. Platnick, The Journal of Arachnology, 1993, Volume 21, no....
arachnid orders of the world: Amblypygi, Uropygi, Schizomida, Palpigradi, Ricinulei and Solifugae. CSIRO Publishing. pp. 3–58. ISBN 978-0-643-06805-6. Dunlop...
A pygidium is present in Palpigradi, Amblypygi, Uropygi, Schizomida, Ricinulei and in the extinct order Trigonotarbida. It is also present in early fossil...
"New and rare fossil Arachnida in Cretaceous Burmese Amber (Amblypygi, Ricinulei and Uropygi: Thelephonida)" (PDF). In Jörg Wunderlich (ed.). Beiträge...
This list of invertebrates of California lists invertebrate species (animals without a backbone) that are found in the US State of California. This list...
Arachnid Orders of the World: Amblypygi, Uropygi, Schizomida, Palpigradi, Ricinulei and Solifugae. Collingwood, Victoria : CSIRO Publishing. 385 pp. Gustavo...
can be found in the Amazon rainforest. Cryptocellus becki Arachnida: Ricinulei. Norman I. Platnick, Species 2000 and ITIS Catalogue of Life, May 2012...
(Electrokoenenia) and Schizomida and the only known fossil members of Ricinulei since the Paleozoic. Chimerarachne is a unique stem-group spider still...
Global Information
