Summary for Theridiosoma gemmosum (Araneae)

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National Distribution

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Theridiosoma gemmosum Copyright: Peter Harvey
Identification difficulty rating: 3
Name: Theridiosoma gemmosum
Authority: (L.Koch, 1877)
Order: Arachnida: Araneae
Family: Theridiosomatidae
National Rarity status: NS
IUCN status: LC

Records: 699
First Record: 1900
Latest Record: 2023

1992-on hectads: 184
Pre-1992 hectads: 45
Total hectads: 208

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About this species

Recorded altitude range
0m to 589m

Species text

The species does not extend northwards of a line from the Wash to Anglesey. It is widespread in western and southern Europe.

Habitat and ecology
T. gemmosum occurs in damp places, among low herbage, grass, etc., in a variety of wet situations (bogs, wet heath, ditches, fens, marshes). It spins a small orb web low down among vegetation. Both sexes are adult from May to August, females into September, possibly with a male peak in June and a female peak in June and July. The egg-sac is attached by a stalk to bushes and trees at a considerable height from the ground.

The spider is widespread in southern England and often abundant where found, but very local.

The drainage of fens, bogs and other wet places.

Management and conservation
Maintain low vegetation and the water table in fens, bogs, etc. Some bushes are necessary for egg-laying.

Text based on Dawson, I.K., Harvey, P.R., Merrett, P. & Russell-Smith, A.R. (in prep.).  References

Adult Season

Adult Season Data (based on 292 records with adult season information)


background methodology

Broad Habitat Data (based on 126 records with habitat information)

Broad subhabitat Data (based on 8 records with subhabitat information)

Structural Habitat Data (based on 104 records with structural habitat information)

Habitat Detail and Method (based on 271 records with habitat detail and method information)

Recorded management for locations with Theridiosoma gemmosum

Recorded substrate and hydrology for locations with Theridiosoma gemmosum


Theridiosoma gemmosum female fixing silk to water
Theridiosoma gemmosum female fixing silk to water
Theridiosoma gemmosum in web attached to water surface.
Theridiosoma gemmosum in web attached to water surface.
Theridiosoma gemmosum mating pair August 2011
Theridiosoma gemmosum mating pair August 2011
Theridiosoma gemmosum
Theridiosoma gemmosum
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