Oulimnius major

(Rey, 1889)

National assessment

Unassessed

Local assessment

Data deficient

Associated assemblage

slow flowing rivers 25 other species in this assemblage

Statistics

Occurrences

41 since 2000 77 all time

Occupied 1 km squares

14 since 2000 23 all time

Earliest occurrence

1984

Latest occurrence

2016

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.

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].

Data sources

Local species recorders

Biological Records Centre. Bob Merritt Coleoptera Dataset. Licenced under CC-BY https://creativecommons.org/licenses/by/4.0.

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. Biosys Extract - Central, East, North Lincolnshire and Welland Sub-catchments 2016. Licenced under OGL http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3.

Environment Agency. Biosys Extract - Fenland Natural Area 1990-2011. 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.

Cite this page

GLNP (2025). Oulimnius major (Rey, 1889) 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=NBNORG0000010069 (Accessed 08 November 2025).