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

Introduced to Europe

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 2019): North, Central and South America. Introduced to Europe, Macaronesia, West Africa, Seychelles, Pacific Is.
 male  female

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

Helsdingen P J van (2010a) Araneae. In: Fauna Europaea Database (Version 2010.1), online at

Lissner J, Scharff N (2017) Danish Spiders. Online at

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

Saaristo M I (1978) Spiders (Arachnida, Araneae) from the Seychelles Islands, with notes on taxonomy. Ann Zool Fenn 15: 99-126

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: 40-45

World Spider Catalog (2019) World Spider Catalog, version 20.5. Natural History Museum Bern, online at (20.09.2019) doi: 10.24436/2

24-01-2017 Distribution update Old value
12-08-2014 Image insert
29-07-2014 Distribution update Old value
10-06-2014 Image insert
13-05-2014 Distribution update Old value