Summary for Walckenaeria corniculans (Araneae)

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National Distribution

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Identification difficulty rating: 4

Name: Walckenaeria corniculans

Authority: (O.P.-Cambridge, 1875)

Order: Arachnida: Araneae

Family: Linyphiidae

BAP status: UKBAP

National Rarity status: NR

IUCN status: CR, criteria: B2ab(ii,iv)

Records: 27

First Record: 1800

Latest Record: 2015

1992-on hectads: 2

Pre-1992 hectads: 13

Total hectads: 15

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About this species

Recorded altitude range
3m to 230m

Species text

Distribution
The species has been recorded from scattered localities in southern England. It is uncommon in western Europe as far north as Denmark.

Habitat and ecology
The spider occurs in old dry heathland in Dorset, Hampshire and West Sussex (in some cases near pine trees), and in woodland litter (mainly beech) at other sites. Adults are found between April and September.

Status
UK Biodiversity Action Plan priority species. The spider has never been found in abundance at any site and it has been recorded from only one location since 1992. Area of occupancy has apparently declined by 88% from eight hectads before 1992 to just one hectad since that date.

Threats
The loss of heathland to afforestation, agriculture and development, and by fire.

Management and conservation
On heathland, the maintenance of some old heather is essential. Where fire is used as a management technique, it should be used on a small scale, as extensive fires might be detrimental and may account for this species' absence from many heathland areas.

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 1 records with adult season information)

Habitats

background methodology

Broad Habitat Data (based on 15 records with habitat information)

Broad subhabitat Data (based on 1 records with subhabitat information)

Structural Habitat Data (based on 1 records with structural habitat information)

Habitat Detail and Method (based on 1 records with habitat detail and method information)

Structural habitat by month

Recorded management for locations with Walckenaeria corniculans

Recorded substrate and hydrology for locations with Walckenaeria corniculans

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