Summary for Micaria alpina (Araneae)

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National Distribution

 
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Micaria alpina female Copyright: Richard Gallon
Identification difficulty rating: 4
Name: Micaria alpina
Authority: L.Koch, 1872
Order: Arachnida: Araneae
Family: Gnaphosidae
National Rarity status: NR
IUCN status: EN, criteria: D2

Records: 24
First Record: 1800
Latest Record: 2002

1992-on hectads: 1
Pre-1992 hectads: 6
Total hectads: 7

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About this species

Recorded altitude range
875m to 890m

Species text

Distribution
The species has been recorded from Welsh mountains and from Scotland. In Europe, it is known from France, Austria, Switzerland, Sweden, Norway and Finland.

Habitat and ecology
The spider is found under stones, among grass and moss, etc., usually above 750 m. On Creag Meagaidh it was found in Vaccinium myrtillus heath, while on An Teallach the habitat was Nardus/Racomitrium grassland (D. Horsfield pers. comm.). Near Loch an Fheoir it was found in a hummock of Racomitrium in the middle of a Sphagnum bog. Males are adult from May to July, females in June and July.

Status
Known from a single location since 1992 but high altitude habitats are under-recorded. Very few specimens have been found. Area of occupancy has apparently declined by 83% from six hectads prior to 1992 to just one since that date.

Threats
Some populations may be vulnerable to damage from hill-walkers and skiers. Forestry is a potential threat to populations below the tree line.

Management and conservation
Prevent the loss of habitat to forestry and damage from skiing and trampling.

Text based on Dawson, I.K., Harvey, P.R., Merrett, P. & Russell-Smith, A.R. (in prep.).  References

Adult Season

no detailed adult season data available


Habitats

background methodology

Broad Habitat Data (based on 5 records with habitat information)

no subhabitat data available

no structural habitat data available

no habitat detail or method data available

Recorded management for locations with Micaria alpina

Recorded substrate and hydrology for locations with Micaria alpina

Images

Micaria alpina female
Micaria alpina female
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