Summary for Pseudeuophrys erratica (Araneae)

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National Distribution

 
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Pseudeuophrys erratica male Copyright: Richard Gallon
Identification difficulty rating: 3
Name: Pseudeuophrys erratica
Authority: (Walckenaer, 1826)
Order: Arachnida: Araneae
Family: Salticidae
National Rarity status: NS
IUCN status: LC

Records: 264
First Record: 1861
Latest Record: 2017

1992-on hectads: 35
Pre-1992 hectads: 68
Total hectads: 93

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About this species

Recorded altitude range
0m to 450m

Species text

Distribution
The species is widely but locally distributed in western and northern Britain. It is rare or absent from most of southern and eastern England. It is widespread in western and central Europe, but has not been recorded from the Netherlands.

Habitat and ecology
P. erratica occurs on walls and amongst stones. In Leicestershire it has been found in rugged heathland, scrubby acid grassland and ancient deer parks with over-mature oak trees, in each case with bracken a dominant feature of the habitat. The spiders have been observed stalking prey on rock surfaces and on an oak stump in bright sunshine, and they have also been collected from dead wood and under bark of old oak trees, under stones and in leaf litter (Crocker & Daws 1996). It also occurs on the trunks of Scots Pine in native Caledonian pine forest. Adults of both sexes are found from late spring to late summer, but mainly in May and June, with females occasionally recorded into the autumn.

Status
The species seems to have suffered a long-term decline of over 60%.

Threats
Loss of old stone field walls in upland areas may present a threat to this species as does planting of acid upland grasslands with conifers but the reasons for the decline in this species are not obvious as the habitat does not seem to be threatened.

Management and conservation
Protect and maintain stone field walls in upland areas. Ensure that acid grassland and moorlands are not replaced by conifer plantations. More focused research on the ecology of this species is needed to address its conservation needs.

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

 Account last edited by Helen Smith at 20:15 on Fri 9th Dec 2016.

Adult Season

Adult Season Data (based on 85 records with adult season information)


Habitats

background methodology

Broad Habitat Data (based on 80 records with habitat information)

Broad subhabitat Data (based on 4 records with subhabitat information)

Structural Habitat Data (based on 55 records with structural habitat information)

Habitat Detail and Method (based on 71 records with habitat detail and method information)

Recorded management for locations with Pseudeuophrys erratica

Recorded substrate and hydrology for locations with Pseudeuophrys erratica

Images

Pseudeuophrys erratica male 2
Pseudeuophrys erratica male 2
Pseudeuophrys erratica male
Pseudeuophrys erratica male
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