Biology
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Little is known of the ecology of this predatory species (3).
Conservation
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A grouped Species Action Plan has been produced for 6 species of river shingle beetles under the UK Biodiversity Action Plan (UK BAP). This plan aims to maintain the range of all listed species, and enhance the populations by 2010 (3).
Description
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This ground beetle is the only member of the genus Perileptus that occurs in central Europe (4). It is a small, flat beetle, and the legs, and central part of the wing cases (elytra) are paler than the rest of the dark brown body (2).
Habitat
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Inhabits exposed riverine sediments (either sand or shingle), typically close to the water (3). Beetles that share this habitat are known as 'river shingle beetles' (3).
Range
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Historical records indicate that this species once had a widespread but scattered distribution in Britain extending from Cornwall to southern Scotland, reaching east to the Isle of Wight in the south and Yorkshire in the north (3). Unfortunately the species has been lost from many of these areas, and most records since 1970 are from Wales and around the Welsh borders, with recent sightings in Scotland and south Devon (3). In Europe, this beetle has a wide distribution (3).
Status
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Classified as Nationally Scarce in Great Britain (3)
Threats
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Threats facing the habitat of this beetle include river engineering works, such as dredging, and straightening of the banks, flow control resulting from flood defence or damming, pollution by agricultural run-off, trampling of riverbanks by livestock, and the spread of introduced invasive plants, such as Himalayan balsam (Impatiens gladulifera) (3).
Perileptus areolatus
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Perileptus areolatus is a species of brown coloured[1] ground beetle in the Trechinae subfamily.
Distribution
The species can be found everywhere in Europe except for Andorra, Finland, Lithuania, Monaco, San Marino and Vatican City.[2] The can also be found in Asia in such countries as Armenia, Azerbaijan, Georgia, Iran, Iraq, Israel, Saudi Arabia, Syria, Turkey, and in African nation of Tunisia and Canary Islands.[1] The species is 2.4–2.5 millimetres (0.094–0.098 in) in length.[3]
Irish distribution
In Ireland the species is found Kerry and Cork provinces.[4]
Habitat
The species lives along riverine shingle.[4]
Threats and status
The species is classified as Nationally Scarce in Great Britain due to the habitat loss. The habitat loss includes the spread of invasive plants such as Himalayan Balsam, pollution, and floods due to engineering and dredging of the banks.[3]
References
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Perileptus areolatus: Brief Summary
provided by wikipedia EN
Perileptus areolatus is a species of brown coloured ground beetle in the Trechinae subfamily.
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