Summary for Achaearanea tepidariorum (Araneae)

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National Distribution

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Achaearanea tepidariorum female with egg sacs in greenhouse Copyright: Evan Jones
Identification difficulty rating: 3
Name: Achaearanea tepidariorum
Authority: (C.L.Koch, 1841)
Order: Arachnida: Araneae
Family: Theridiidae
IUCN status: LC

Records: 268
First Record: 1898
Latest Record: 2017

1992-on hectads: 102
Pre-1992 hectads: 30
Total hectads: 129

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About this species

Recorded altitude range
0m to 900m

Species text

The spider is widespread in England but with few records in Wales and north of Yorkshire. A number of records from outdoor habitats included here probably refer to A. simulans prior to its separation as a distinct species or as misidentifications. It is widespread in western and central Europe.

Habitat and ecology
Although typically found in buildings such as heated greenhouses, this species has occasionally been found outdoors, e.g. on yew trees in churchyards. Mature specimens of both sexes can be found throughout the year.

An introduced synanthropic species. Roberts (1995) suggests that pesticides are responsible for a decline in the species, but the increase in large garden centres may be reversing this trend (I. Dawson, pers. comm.).

Original author of profile: P. Lee

Text based on Harvey, P.R., Nellist, D.R. & Telfer, M.G. (eds) 2002. Provisional atlas of British spiders (Arachnida, Araneae), Volumes 1 & 2. Huntingdon: Biological Records Centre.  References

Adult Season

Adult Season Data (based on 146 records with adult season information)


background methodology

Broad Habitat Data (based on 120 records with habitat information)

Broad subhabitat Data (based on 2 records with subhabitat information)

Structural Habitat Data (based on 16 records with structural habitat information)

Habitat Detail and Method (based on 34 records with habitat detail and method information)

Recorded management for locations with Achaearanea tepidariorum

Recorded substrate and hydrology for locations with Achaearanea tepidariorum


American House Spider
American House Spider
Adult female Achaearanea tepidariorum
Adult female Achaearanea tepidariorum
Achaearanea tepidariorum female with egg sacs in greenhouse
Achaearanea tepidariorum female with egg sacs in greenhouse
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