Summary for Pistius truncatus (Araneae)

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National Distribution

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Identification difficulty rating: 5
Name: Pistius truncatus
Authority: (Pallas, 1772)
Order: Arachnida: Araneae
Family: Thomisidae
National Rarity status: NR
IUCN status: CR, criteria: B2ab(ii,iv)

Records: 9
First Record: 1896
Latest Record: 2022

1992-on hectads: 2
Pre-1992 hectads: 2
Total hectads: 3

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About this species

Recorded altitude range

Species text

The species was recorded from the New Forest near Brockenhurst, South Hampshire, in 1896. The precise locality is not known. A female was recorded from a wood in the Blean area, East Kent, in 1985 and two juveniles collected at East Blean Woods in 1993. A single female was taken from the same area in 2001. The spider is widespread in western and central Europe as far north as Sweden, where it is included on their Red List (Gärdenfors 2000). It has not been recorded in Ireland.

Habitat and ecology
The first Blean specimen emerged in May from pieces of dead wood collected in the previous March, which suggests that dead wood is an over-wintering site. The specimen survived for some weeks in captivity, being fed on flies. The two juveniles were collected from small coppiced oak. In France, this species is found on bushes, especially small scrubby oaks. Adults occur in May and June; in captivity one male reached maturity in March.

The spider was thought to be extinct in Britain until rediscovered in 1985. Although originally recorded from the New Forest, it now appears to be confined to a single location in Kent where populations appear to be extremely small.

Many broad-leaved woodlands in south-east England have been cleared for agriculture or converted to conifer plantations. Development pressures are also increasing in Kent with the effects of the Channel Tunnel, and further woods are likely to be lost to housing, industry and roads.

Management and conservation
Protection of woodland form development pressures. In the site in which it occurs, ensuring that some oaks are maintained as small trees by coppicing.

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 2 records with adult season information)


background methodology

no broad habitat data available

no subhabitat data available

Structural Habitat Data (based on 3 records with structural habitat information)

Habitat Detail and Method (based on 2 records with habitat detail and method information)

Recorded management for locations with Pistius truncatus

Recorded substrate and hydrology for locations with Pistius truncatus


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