Summary for Araeoncus crassiceps (Araneae)

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National Distribution

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Araeoncus crassiceps male Copyright: Tylan Berry
Identification difficulty rating: 3
Name: Araeoncus crassiceps
Authority: (Westring, 1861)
Order: Arachnida: Araneae
Family: Linyphiidae
National Rarity status: NS
IUCN status: LC

Records: 870
First Record: 1894
Latest Record: 2023

1992-on hectads: 118
Pre-1992 hectads: 157
Total hectads: 253

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About this species

Recorded altitude range
0m to 800m

Species text

The species is widespread in Wales, northern England and north-western Scotland, though the majority of recent records are from Scotland. In the south and east there are very few recent records. It is a Palaearctic species, widespread in most of north-western and central Europe.

Habitat and ecology
A. crassiceps occurs in a variety of habitats including moss, grass, straw, litter, tideline debris and heathland, but in rather damper conditions than those favoured by A. humilis. On heathland in Dorset males were found to be active from May to July.

This species seems to have undergone a significant major decline. Trend analysis of the continuing decline in area of occupancy over the period 1976 to 2005 indicates a reduction in population size of 45% over a ten year period.

Destruction of heathland and grassland for building and agricultural development. Drainage of wet areas in these habitats.

Management and conservation
Prevent further habitat loss in heathlands and grasslands due to urban and agricultural development. Maintain wet areas in heathlands and grasslands.

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 255 records with adult season information)


background methodology

Broad Habitat Data (based on 311 records with habitat information)

Broad subhabitat Data (based on 10 records with subhabitat information)

Structural Habitat Data (based on 126 records with structural habitat information)

Habitat Detail and Method (based on 262 records with habitat detail and method information)

Recorded management for locations with Araeoncus crassiceps

Recorded substrate and hydrology for locations with Araeoncus crassiceps


Araeoncus crassiceps (male)
Araeoncus crassiceps (male)
Araeoncus crassiceps female
Araeoncus crassiceps female
Araeoncus crassiceps male
Araeoncus crassiceps male
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