Cyriocosmus Explained

Cyriocosmus is a genus of tarantulas that was first described by Eugène Louis Simon in 1903.^[1] They are small to medium spiders, with a bicolored or one same color carapace.^[2]

Diagnosis

It differs from all other tarantulas by the paraembolic apophysis in the palpal bulbs of males, and a spermatheca with two spiral receptacles, which usually end in a caliciform or globular extension. Except for C. nogueiranetoi, which owns a S shape extension. All the species also own type 3 urticating hairs.

Species

it contains twenty-three species, found in South America, on Tobago, and Trinidad:^[3]

• Cyriocosmus aueri Kaderka, 2016 – Peru
• Cyriocosmus bertae Pérez-Miles, 1998 – Brazil
• Cyriocosmus bicolor (Schiapelli & Gerschman, 1945) – Brazil
• Cyriocosmus blenginii Pérez-Miles, 1998 – Bolivia
• Cyriocosmus elegans (Simon, 1889) – Venezuela, Trinidad and Tobago
• Cyriocosmus fasciatus (Mello-Leitão, 1930) – Brazil
• Cyriocosmus fernandoi Fukushima, Bertani & da Silva, 2005 – Brazil
• Cyriocosmus foliatus Kaderka, 2019 – Peru
• Cyriocosmus giganteus Kaderka, 2016 – Peru
• Cyriocosmus hoeferi Kaderka, 2016 – Brazil
• Cyriocosmus itayensis Kaderka, 2016 – Peru
• Cyriocosmus leetzi Vol, 1999 – Colombia, Venezuela
• Cyriocosmus nicholausgordoni Kaderka, 2016 – Venezuela
• Cyriocosmus nogueiranetoi Fukushima, Bertani & da Silva, 2005 – Brazil
• Cyriocosmus paredesi Kaderka, 2019 – Peru
• Cyriocosmus perezmilesi Kaderka, 2007 – Bolivia
• Cyriocosmus peruvianus Kaderka, 2016 – Peru
• Cyriocosmus pribiki Pérez-Miles & Weinmann, 2009 – Peru
• Cyriocosmus ritae Pérez-Miles, 1998 – Peru, Brazil
• Cyriocosmus sellatus (Simon, 1889) (type) – Peru, Brazil
• Cyriocosmus venezuelensis Kaderka, 2010 – Venezuela
• Cyriocosmus versicolor (Simon, 1897) – Paraguay, Argentina
• Cyriocosmus williamlamari Kaderka, 2016 – Venezuela

In synonymy

• C. chicoi Pérez-Miles, 1998 = Cyriocosmus bicolor
• C. planus (Fischel, 1927) = Cyriocosmus elegans
• C. rogerioi Pérez-Miles & Weinmann, 2009 = Cyriocosmus pribiki
• C. semifasciatus Mello-Leitão, 1939 = Cyriocosmus elegans

Transferred to other genera

• Cyriocosmus butantan Pérez-Miles, 1998 → Hapalopus butantan
• Cyriocosmus nigriventris Mello-Leitão, 1939 → Hapalopus nigriventris

See also

• List of Theraphosidae species

Notes and References

1. Book: Simon, E. 1903. Histoire naturelle des araignées. Roret . Paris. 10.5962/bhl.title.51973. Eugène Simon.
2. Web site: Kaderka . Radan . 2019 . The genus Cyriocosmus Simon 1903 and two new species from Peru (Araneae: Theraphosidae: Theraphosinae) . July 27, 2022 . Scielo.
3. Gen. Cyriocosmus Simon, 1903. World Spider Catalog Version 20.0. 2020-04-10. 2020. Natural History Museum Bern. 10.24436/2. Gloor. Daniel. Nentwig. Wolfgang. Blick. Theo. Kropf. Christian.