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: 26
First Record: 1800
Latest Record: 1996

1992-on hectads: 1
Pre-1992 hectads: 13
Total hectads: 14

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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

no detailed adult season data available


Habitats

background methodology

Broad Habitat Data (based on 14 records with habitat information)

no subhabitat data available

no structural habitat data available

no habitat detail or method data available

Recorded management for locations with Walckenaeria corniculans

Recorded substrate and hydrology for locations with Walckenaeria corniculans

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