Summary for Phalangium opilio (Opiliones)

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National Distribution

 
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Phalangium opilio Female Copyright: Paul Richards
Identification difficulty rating: 2
Name: Phalangium opilio
Authority: Linnaeus, 1758
Order: Arachnida: Opiliones
Family: Phalangiidae

Records: 3318
First Record: 1878
Latest Record: 2017

1992-on hectads: 449
Pre-1992 hectads: 778
Total hectads: 1098

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About this species

Recorded altitude range
0m to 415m

Species text

Distribution
Phalangium opilio is a common and widespread species which becomes more coastal in Scotland. It is unclear when this species was first recorded in Britain but the first HRS record is from Glanvilles Wooton in Dorset prior to 1878.

It is widely distributed across Europe, including southern Sweden. It extends to North America and Asia and has been introduced to many parts of the world including New Zealand, readily stowing away in ships and aeroplanes.

Habitat and ecology
It occupies a wide range of mainly open, warm habitats including gardens, grassland, sand-dunes, brownfield sites, hedgerows and open woodland. It is not often found in heathland but is common around the coast. It is usually found in the lower layers of the vegetation but it is also worth searching walls and tree trunks. It has been recorded at up to 415m in Britain and to 2400m in the Apennines (Martens 1978).

Hillyard (2005) states that over most of Britain this species is adult from June and survives until December. HRS records show the first adults appearing in May (both sexes) and reaching a peak in September. Hillyard speculates that southern populations may have two generations in the year. Most juveniles are present from May to August and the eggs are laid the autumn, hatching in the spring. Clearly there is much to be learned about the life-cycle of this species especially in the south of its range e.g. whether juveniles overwinter. Wijnhoven (2009) notes the occurrence of two generations in the Netherlands.

It is very easy to see this species feeding as it is often active during the day. Several authors have recorded a long list of prey/food items across most invertebrate taxa and including vertebrate corpses.

Status
Common and widespread.

Text based on: Hillyard, P. D. 2005. Harvestmen: keys and notes for the identification of British species. Synopses of the British Fauna 4 (3rd edn). Field Studies Council, Shrewsbury.

References

Martens, J. 1978. Spinnentiere, Arachnida: Weberknechte, Opiliones. Die Tierwelt Deutschlands 64: 1-464. Fischer Verlag, Jena.

Wijnhoven, H. 2009. De Nederlandse hooiwagens (Opiliones) Naturalis Biodiversity Centre - Entomologische Tabellen, The Netherlands. (translation available here: http://srs.britishspiders.org.uk/portal/p/Harvestman+Resources)

 References

Adult Season

Adult Season Data (based on 795 records with adult season information)


Habitats

background methodology

Broad Habitat Data (based on 1234 records with habitat information)

Broad subhabitat Data (based on 55 records with subhabitat information)

Structural Habitat Data (based on 656 records with structural habitat information)

Habitat Detail and Method (based on 796 records with habitat detail and method information)

Recorded management for locations with Phalangium opilio

Recorded substrate and hydrology for locations with Phalangium opilio

Images

Phalangium opilio
Phalangium opilio
Phalangium opilio (Male)
Phalangium opilio (Male)
Phalangium opilio mating 2
Phalangium opilio mating 2
Phalangium opilio female in meadow
Phalangium opilio female in meadow
Phalangium opilio Female
Phalangium opilio Female
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