Summary for Trochosa robusta (Araneae)

previous species | next species

National Distribution

 
Logged-on? click on dot to query records. Please note our
Terms of Use. Double-click on map to go to region

View time series maps for Trochosa robusta
Identification difficulty rating: 4
Name: Trochosa robusta
Authority: (Simon, 1876)
Order: Arachnida: Araneae
Family: Lycosidae
National Rarity status: NR
IUCN status: VU, criteria: B2ab(ii)

Records: 89
First Record: 1909
Latest Record: 2007

1992-on hectads: 6
Pre-1992 hectads: 13
Total hectads: 19

Explore Regional Distribution

Please log on and add a note on this species

Missing records?

log-on to access spider taxon report


 
 
Please report any problems with this record:
VC error
GR error
Taxon ID suspect
Structural habitat suspect
Other problems, please explain here:


 

About this species

Recorded altitude range
1m to 220m

Species text

Distribution
Apart from two old records from Yorkshire and Durham, which may be considered doubtful, the species is only recorded from the southern half of England. Most inland records of the species may be based on misidentifications. It is widespread in north-western and central Europe, except Scandinavia, and has not been recorded from Ireland.

Habitat and ecology
T. robusta occurs mainly on stony calcareous grassland, especially on cliff-tops and under-cliff on the south coast. Males are adult from February to June, and again in September and October, females are probably present for most of the year. The female makes a shallow burrow under a stone.

Status
Most old records are doubtful, because of confusion with the common T. ruricola (De Geer) and new records should be checked by an experienced arachnologist familiar with this species. All definite recent records are from calcareous grassland, landslip or coastal cliffs. The species may be fairly numerous in some places, especially on the coast, but is very local and has apparently undergone substantial decline.

Threats
Most sites are in fairly inaccessible places such as cliffs or old quarries which are unlikely to be threatened by agriculture.

Management and conservation
Soft-rock cliff sites should be maintained in their existing state without sea defences which would cause stabilisation and changes in vegetation structure.

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 36 records with adult season information)


Habitats

background methodology

Broad Habitat Data (based on 17 records with habitat information)

no subhabitat data available

Structural Habitat Data (based on 35 records with structural habitat information)

Habitat Detail and Method (based on 31 records with habitat detail and method information)

Recorded management for locations with Trochosa robusta

Recorded substrate and hydrology for locations with Trochosa robusta

Images

sorry, no pictures available for this species yet - if you have an image please log on and upload it

See also A-Z Species Index - A-Z Picture Index - previous species | next species