| Date | Site | OS Grid Ref | Stage | Quantity |
|---|---|---|---|---|
| 01 Sep 2022 | Nursery Road, Alsager | SJ775554 | Larval | 1 |
| 24 Aug 2022 | Chester Meadows | SJ4165 | Larval | 1 |
| 28 Aug 2020 | Denhall and Decca Pools | SJ2975 | Larval | 1 |
| 28 Aug 2020 | Denhall and Decca Pools | SJ2975 | Larval | 1 |
| 27 Aug 2020 | Denhall and Decca Pools | SJ2975 | Larval | 1 |
| 07 Sep 2008 | Wallasey | SJ3191 | Adult | 1 |
| 2006 | Wirral | SJ28 | Adult | 1 |
| 01 Jun 2005 | Birkenhead | SJ3289 | Adult | 1 |
| 26 Aug 2004 | Offerton | SJ9189 | Adult | 1 |
| 19 Aug 1999 | Higher Runcorn | SJ5182 | Adult | 1 |
| 29 Sep 1992 | Moreton | SJ2590 | Dead | 1 |
| 11 Jul 1990 | Whaley Bridge | SK0181 | Adult | 1 |
| 09 Aug 1986 | Marple | SJ9587 | Adult | 1 |
| 16 Oct 1983 | Hoylake Langfields | SJ2288 | Adult | 1 |
| 06 Oct 1969 | Upton, Birkenhead | SJ2788 | Adult | 1 |
| 1963 | Thurstaston | SJ2484 | Adult | 1 |
| 1961 | Higher Runcorn | SJ5182 | Adult | 1 |
| 1956 | Stanlow | SJ4475 | Adult | 1 |
| 1956 | Frandley House, Frandley | SJ640788 | Not recorded | 1 |
| 1956 | Delamere Post Office | SJ561689 | Adult | 1 |
| 1956 | Antrobus | SJ6479 | Not recorded | 1 |
| 1956 | Hazel Grove | SJ9287 | Adult | 1 |
| 1951 | Hazel Grove | SJ9287 | Not recorded | 1+ |
| 15 Jun 1951 | Mobberley | SJ7879 | Not recorded | 1+ |
| 1950 | Great Budworth | SJ6677 | Larval | 1 |
| 1950 | Raby | SJ3380 | Not recorded | 1 |
| 1950 | Gatley | SJ8487 | Not recorded | 1 |
| 1950 | Heswall | SJ2482 | Not recorded | 1 |
| 1950 | Chester | SJ4066 | Not recorded | 1 |
| 10 Oct 1949 | Willaston | SJ3377 | Larval | 1 |
| 1949 | Chester Grasslands | SJ3864 | Larval | 1 |
| 1949 | Chester | SJ4066 | Not recorded | 1 |
| 1949 | Chester | SJ4066 | Adult | 1 |
| 21 Jun 1948 | Hoylake | SJ2188 | Adult | 1 |
| 1947 | Raby | SJ3380 | Larval | 1 |
| 1947 | Willaston | SJ3377 | Pupal | 3 |
| 1947 | Chester | SJ4066 | Adult | 1 |
| 1946 | Waverton | SJ4564 | Adult | 1 |
| 1944 | Raby | SJ3078 | Not recorded | 1 |
| 1944 | Hoole | SJ4266 | Adult | 1 |
| 1944 | Kelsall | SJ5268 | Adult | 1 |
| 1943 | Bebington | SJ3283 | Not recorded | 1 |
| 1941 | Heswall | SJ2482 | Larval | 1 |
| 1941 | Chester | SJ4066 | Adult | 1 |
| 1941 | Chester | SJ4066 | Adult | 1 |
| 1940 | SJ68 | SJ68 | Not recorded | 1+ |
| 1940 | Wilmslow | SJ8280 | Adult | 1 |
| 1940 | SJ55 | SJ55 | Not recorded | 1+ |
| 1940 | Bramhall | SJ8884 | Adult | 1 |
| 1938 | Bebington | SJ3283 | Dead | 1 |
| 1938 | Bromborough | SJ3280 | Not recorded | 1 |
| 1938 | Raby | SJ3380 | Larval | 3 |
| 1937 | Raby Mere | SJ3381 | Adult | 1 |
| 1935 | Lymm | SJ6887 | Dead | 1 |
| 1935 | Piper's Ash | SJ4367 | Adult | 1 |
| 1935 | Chester | SJ4066 | Not recorded | 1 |
| 1934 | Raby Mere | SJ3381 | Larval | 1 |
| 1933 | Grappenhall | SJ6286 | Pupal | 2 |
| 12 Aug 1933 | Peover Inferior | SJ7375 | Larval | 1 |
| 1931 | Runcorn | SJ5082 | Adult | 1 |
| 1929 | Rock Ferry | SJ3386 | Adult | 1 |
| 1928 | Cheadle Hulme | SJ8686 | Adult | 1 |
| 21 Sep 1926 | Guilden Sutton | SJ4468 | Adult | 1 |
| 1925 | Chester | SJ4066 | Not recorded | 1 |
| 1920 | Blacon | SJ3867 | Adult | 1 |
| 1920 | Chester | SJ4166 | Adult | 1 |
| 1909 | Delamere | SJ5570 | Not recorded | 1+ |
| 07 Nov 1908 | Birkenhead | SJ3089 | Adult | 1 |
| 1908 | Hoole | SJ4266 | Adult | 3 |
| 11 Sep 1905 | Chester | SJ4066 | Adult | 1 |
| 1905 | Cheshire | Unknown | Larval | 4 |
| 1905 | Lymm | SJ6685 | Not recorded | 1+ |
| 1905 | Chester | SJ4066 | Adult | 1 |
| 24 Oct 1903 | Chester | SJ4066 | Adult | 1 |
| 24 Oct 1903 | Chester | SJ4065 | Adult | 1 |
| 1903 | Vicars Cross | SJ4466 | Not recorded | 1+ |
| 1903 | Bowdon | SJ7587 | Not recorded | 1+ |
| 1903 | Red Rocks, Hoylake | SJ2088 | Not recorded | 1+ |
| 1902 | Sale | SJ7891 | Pupal | 1 |
| 1901 | Knutsford | SJ7479 | Not recorded | 1+ |
| 1901 | Carrington | SJ7392 | Larval | 2 |
| 1901 | Acton | SJ6253 | Not recorded | 1+ |
| 1900 | Malpas | SJ4846 | Larval | 1+ |
| 1900 | Farndon | SJ4054 | Larval | 1+ |
| 1900 | Hoylake | SJ2188 | Not recorded | 1 |
| 1899 | Eccleston | SJ4062 | Not recorded | 1 |
| 07 Sep 1896 | Chester | SJ4066 | Larval | 1 |
| 1895 | Tranmere | SJ3287 | Not recorded | 1+ |
| 1890 | Sale | SJ7891 | Not recorded | 1+ |
| 1890 | Bidston | SJ2889 | Not recorded | 1+ |
| 1890 | Liscard | SJ3092 | Not recorded | 1+ |
| 07 Sep 1889 | Frodsham | SJ5177 | Larval | 1 |
| 1889 | Manley | SJ4971 | Larval | 1 |
| 1887 | Wallasey | SJ2792 | Larval | 1+ |
| 1887 | Withington | SJ8169 | Not recorded | 1+ |
| 1885 | Saughall | SJ3669 | Not recorded | 1+ |
| 1885 | Upton, Birkenhead | SJ2788 | Larval | 1+ |
| 1885 | Delamere | SJ5570 | Not recorded | 1+ |
| 1885 | Tattenhall | SJ4858 | Not recorded | 1+ |
| 1880 | Cheshire | Unknown | Adult | 1 |