Theridiidae  Sundevall, 1833 / Coleosoma  O. Pickard-Cambridge, 1882   1 species

Coleosoma floridanum  Banks, 1900


Dark yellowish brown. Opisthosoma with darker mottlings and scattered white spots dorsally, anterior end surrounded by a hard sclerite narrow dorsally but extending more than halfway along the ventral surface.

Prosoma length: 0.7 mm, prosoma width: 0.5 mm.

Body length male: 1.8-2.2 mm

Prosoma, sternum and legs yellowish brown, prosoma and sternum with narrow dark borders. Opisthosoma oval with spinnerets almost posterior, pale, dorsally with 3 pairs of irregular white patches followed by a median band of white patches.

Prosoma length: 0.8 mm, prosoma width: 0.6 mm.

Body length female: 1.7-2.1 mm
Additional information

In the wild, but also in buildings. This species of American origin is not native to Europe (alien species). It had been introduced to Europe at least once and did establish.

Frequency: Very rarely found

  No data
Global distribution (WSC 2021): North, Central and South America. Introduced to Europe, Macaronesia, West Africa, Seychelles, India, Sri Lanka, Philippines, China, Japan, Pacific Is.
 male  female
Distribution List
Austria   (no references) ||| Czechia   (Sestáková et al., 2013; Řezáč et al., 2021) ||| Denmark   (Lissner & Scharff, 2019) ||| Finland   (Koponen et al., 2016) ||| France   (no references) ||| Germany   (no references) ||| Hungary   (Pfliegler, 2014) ||| Netherlands   (no references) ||| Slovakia   (Sestáková et al., 2013) ||| Switzerland   (no references) ||| United Kingdom   (no references) |||

Emerit M, Ledoux J-C (2008) Arrivée en France de Coleosoma floridanum Banks. Revue Arachnologique 17: 53-55 pdf

Koponen S, Fritzén N R, Pajunen T (2016) Checklist of spiders in Finland (Araneae). 6th version, December 2016, online at pdf

Lissner J, Scharff N (2019) Danish Spiders. Online at pdf

Pfliegler W P (2014) Records of some rare and interesting spider (Araneae) species from anthropogenic habitats in Debrecen, Hungary. e-Acta Naturalia Pannonica 7: 143-156 pdf

Řezáč M, Růžička V, Hula V, Dolanský J, Machač O, Roušar A (2021) Spiders newly observed in Czechia in recent years – overlooked or invasive species? BioInvasions Records 10: 555-566 pdf

Saaristo M I (1978) Spiders (Arachnida, Araneae) from the Seychelles Islands, with notes on taxonomy. Annales Zoologici Fennici 15: 99-126 pdf

Sestáková A, Christophoryova J, Korenko S (2013) A tropical invader, Coleosoma floridanum, spotted for the first time in Slovakia and the Czech Republic (Araneae, Theridiidae). Arachnologische Mitteilungen 45: 40-44 pdf

WSC (2021) World Spider Catalog. Version 22.5. Natural History Museum Bern, online at (22.09.2021) doi: 10.24436/2 pdf

05-08-2021 Distribution update Detail
19-01-2021 Distribution update Detail
01-05-2020 Datasheet update Detail
24-01-2017 Distribution update Detail
12-08-2014 Image insert
29-07-2014 Distribution update Detail
10-06-2014 Image insert
13-05-2014 Distribution update Detail