Theridiidae  Sundevall, 1833 / Cryptachaea  Archer, 1946   3 species

Cryptachaea blattea  (Urquhart, 1886)


Pedipalp with short embolus that lies against conductor. Prosoma dark yellow to dark brown or black. Sternum dark brown. Legs whitish yellow, with dark brown annulations. Opisthosoma with black and white pattern, and with small tubercle situated just posterior to mid-dorsal point.

Body length male: 1.7-2.4 mm

Epigyne with protruding knob and roundish opening. Colouration as in males. Opisthosoma: dorsal tubercle less pronounced.

Body length female: 2.2-3.2 mm
Additional information

This species probably originated in Macaronesia and is not native to Europe (alien species). It had been introduced to Europe at least once and did establish.

  No data
Global distribution (WSC 2019): Africa. Introduced to USA, Chile, Azores, Europe, Australia, New Zealand, Hawaii

Bink J (2014a) Cryptachaea blattea (Urquhart, 1886) (Araneae, Theridiidae) voor het eerst waargenomen in Nederland. Nieuwsbrief SPINED 34: 11

Crespo L C, Cardoso P, Henriques S, Gaspar C (2009b) Spiders (Araneae) from Porto Santo (Madeira, Portgal): Additions to the current knowledge. Boletín de la Sociedad Entomologica Aragonesa 45: 471-475

Deltshev C, Vrenozi B, Blagoev G, Lazarov S (2011b) Spiders of Albania – faunistic and zoogeographical review (Arachnida: Araneae). Acta Zoologica Bulgarica 63: 125-144

Hänggi A, Straub S (2016) Storage buildings and greenhouses as stepping stones for non-native potentially invasive spiders (Araneae) - a baseline study in Basel, Switzerland Arachnologische Mitteilungen 51: 1-8

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

Le Divelec, Courtial C, Rollard C (2018) Cryptachaea blattea (Urquart, 1886) and Pseudomaro aenigmaticus (Denis, 1966): deux araignées nouvelles pour la France (Araneae: Theridiidae, Linyphiidae). Revue Arachnologique 2 5: 2-6 pdf

Marriott D (2012) Cryptachaea blattea (Urquhart, 1886) a theridiid new to Great Britain. Newsl Br Arachnol Soc 123: 9-10

Sührig A (2010) Cryptachaea blattea, eine weitere nach Deutschland eingeschleppte Spinnenart (Araneae: Theridiidae). Arachnologische Mitteilungen 39: 1-4

Vink C J, Dupérré N, Paquin P, Fitzgerald B M, Sirvid P J (2009) The cosmopolitan spider Cryptachaea blattea (Urquhart 1886) (Araneae: Theridiidae): Redescription, including COI sequence, and new synonymy. Zootaxa 2133: 55-63

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

07-01-2019 Distribution update Old value
02-02-2017 Image insert
02-02-2016 Distribution update Old value
08-01-2015 Distribution update Old value
04-12-2013 Distribution update Old value