Summary for Micrargus apertus (Araneae)

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National Distribution

 
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Identification difficulty rating: 4
Name: Micrargus apertus
Authority: (O.P.-Cambridge, 1871)
Order: Arachnida: Araneae
Family: Linyphiidae
IUCN status: LC

Records: 1033
First Record: 1964
Latest Record: 2018

1992-on hectads: 191
Pre-1992 hectads: 119
Total hectads: 284

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About this species

Recorded altitude range
0m to 890m

Species text

Distribution
M. apertus is widespread in Scotland and parts of England, but very scattered or absent elsewhere. It is a Palaearctic species recorded from Scandinavia, Belgium, Germany, Austria, the Czech Republic, Poland and Romania.

Habitat and ecology
The spider is usually found in moss, leaf litter and detritus in woods. Any differences in habitat requirements between M. apertus and M. herbigradus are not yet clear, but M. herbigradus seems to occur in more open habitats than M. apertus in the north (P. Merrett, pers. comm.). Adults have been recorded at all seasons of the year with a peak in spring and early summer.

Status
The species is apparently more local and scarce than M. herbigradus in the south, but commoner than that species in the north. M. apertus was reinstated as a species separate from M. herbigradus by Millidge (1975). In both sexes, careful consideration of the genitalia is necessary to distinguish between these two species.

Original author of profile: D.R. Nellist.

Text based on Harvey, P.R., Nellist, D.R. & Telfer, M.G. (eds) 2002. Provisional atlas of British spiders (Arachnida, Araneae), Volumes 1 & 2. Huntingdon: Biological Records Centre.  References

Adult Season

Adult Season Data (based on 622 records with adult season information)


Habitats

background methodology

Broad Habitat Data (based on 536 records with habitat information)

Broad subhabitat Data (based on 13 records with subhabitat information)

Structural Habitat Data (based on 544 records with structural habitat information)

Habitat Detail and Method (based on 633 records with habitat detail and method information)

Recorded management for locations with Micrargus apertus

Recorded substrate and hydrology for locations with Micrargus apertus

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