Key action species

This species has been identified in the Threatened Species Recovery Actions - 2025 Baseline, published by Natural England, as having key actions which can help recover populations or prevent further loss.

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Agabus undulatus

(Schrank, 1776)

National assessment

Unassessed

Local assessment

Data deficient

Associated assemblage

reed-fen 107 other species in this assemblage

Statistics

Occurrences

23 since 2000 66 all time

Occupied 1 km squares

9 since 2000 18 all time

Earliest occurrence

1800

Latest occurrence

2014

Distribution

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Occurrence since 1950

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This chart should not be relied upon for an indication of species status as variations in recording effort can heavily affect the count of occurrences and occupied 1km squares.

Threatened species recovery actions

Actions from Threatened Species Recovery Actions 2025 Baseline published by Natural England.

Advice & support

For all protected sites with post-2000 records, advise site managers on the presence and requirements of this species in consideration of SSSI and nature reserve management, especially pond restoration and water level control. Consider opportunities for listing this species as a site 'feature' (e.g. review of SSSI citations).

Status survey/review

Monitor York and Herefordshire populations at 5 year intervals to ensure species remains present and habitat is in favourable condition. Make recommendations for habitat management where appropriate.

Status survey/review

Survey aquatic macroinvertebrates of ponds and ditches on restored/re-created wetlands in the Fens, using Agabus undulatus as a flagship species.

References

Webb, J., Heaver, D., Lott, D., Dean, H.J., van Breda, J., Curson, J., Harvey, M.C., Gurney, M., Roy, D.B., van Breda, A., Drake, M., Alexander, K.N.A. and Foster, G. (2017). Pantheon. [online] Available at: http://www.brc.ac.uk [05/02/2025].

Wilkins, T.C., Baker, T.G, Hipperson-Jervis, C. and Thompson, M. (2025). Threatened Species Recovery Actions 2025 Baseline Version 1.1 - Spreadsheet. Joint Publication JP065. Natural England and partners, UK. https://publications.naturalengland.org.uk/publication/6106216194113536

Data sources

Local species recorders

Environment Agency. Biosys Extract - Central, East, North Lincolnshire and Welland Sub-catchments 2005-2015 (INVERT). Licenced under OGL http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3.

Environment Agency. Freshwater river macroinvertebrate surveys (Biosys). Licenced under OGL http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3.

Lapwings Consultants.

Lincolnshire Naturalists' Union.

Lincolnshire Wildlife Trust.

Cite this page

GLNP (2025). Agabus undulatus (Schrank, 1776) species profile, in Greater Lincolnshire Nature Partnership (ed.) Greater Lincolnshire species data bank. Available at: http://glincsson.glnp.org.uk/view?taxon_list_item_key=NBNORG0000087090 (Accessed 08 November 2025).