Migrant Hawker
- Group
- Dragonflies and damselflies
- Peak month
- September
- Records since 2000
- 82,033
Described in 1805
40 species
Dusky Slug
- Group
- Molluscs
- Peak month
- May
- Records since 2000
- 6,949
Smooth Glass Snail
- Group
- Molluscs
- Peak month
- April
- Records since 2000
- 4,442
European Alder Spittlebug
- Group
- True bugs
- Peak month
- July
- Records since 2000
- 3,678
European physa, Tadpole snail, Bladder snail, Acute bladder snail, Pewter physa
- Group
- Molluscs
- Peak month
- October
- Records since 2000
- 2,479
Large Tiger Hoverfly
- Group
- True flies
- Peak month
- August
- Records since 2000
- 1,933
Sciapus platypterus
- Group
- True flies
- Peak month
- June
- Records since 2000
- 1,055
Dusky-banded Forest Fly
- Group
- True flies
- Peak month
- May
- Records since 2000
- 960
Sphaerophoria interrupta
- Group
- True flies
- Peak month
- July
- Records since 2000
- 889
Coastal Silver-stiletto
- Group
- True flies
- Peak month
- July
- Records since 2000
- 811
Porella compressa
- Group
- Bryozoans
- Peak month
- May
- Records since 2000
- 777
Locust Blowfly
- Group
- True flies
- Peak month
- September
- Records since 2000
- 730
Northern Winter Moth
- Group
- Butterflies and moths
- Peak month
- May
- Records since 2000
- 678
Gold-ribbon Argent
- Group
- Butterflies and moths
- Peak month
- July
- Records since 2000
- 647
Criorhina berberina
- Group
- True flies
- Peak month
- May
- Records since 2000
- 601
Toothless Chrysalis Snail
- Group
- Molluscs
- Peak month
- May
- Records since 2000
- 561
Coelopa frigida
- Group
- True flies
- Peak month
- June
- Records since 2000
- 368
Pipunculus campestris
- Group
- True flies
- Peak month
- July
- Records since 2000
- 364
Chilo phragmitella
- Group
- Butterflies and moths
- Peak month
- July
- Records since 2000
- 301
Clausilia dubia
- Group
- Molluscs
- Peak month
- August
- Records since 2000
- 299
Paraswammerdamia albicapitella
- Group
- Butterflies and moths
- Peak month
- June
- Records since 2000
- 242
Hydrotaea dentipes
- Group
- True flies
- Peak month
- May
- Records since 2000
- 233
Osmia cornuta
- Group
- Bees, wasps and ants
- Peak month
- March
- Records since 2000
- 206
Trichopria verticillata
- Group
- Bees, wasps and ants
- Peak month
- August
- Records since 2000
- 198
Helina quadrum
- Group
- True flies
- Peak month
- August
- Records since 2000
- 192
Peltodytes caesus
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 190
Eristalis rupium
- Group
- True flies
- Peak month
- August
- Records since 2000
- 176
Neophilaenus campestris
- Group
- True bugs
- Peak month
- June
- Records since 2000
- 167
Dichetophora obliterata
- Group
- True flies
- Peak month
- July
- Records since 2000
- 129
Pipizella virens
- Group
- True flies
- Peak month
- June
- Records since 2000
- 124
Siphona cristata
- Group
- True flies
- Peak month
- July
- Records since 2000
- 105
Bucculatrix bechsteinella
- Group
- Butterflies and moths
- Peak month
- October
- Records since 2000
- 86
Hypocaccus rugiceps
- Group
- Beetles
- Peak month
- April
- Records since 2000
- 83
Myolepta dubia
- Group
- True flies
- Peak month
- June
- Records since 2000
- 83
Hydrobia acuta
- Group
- Molluscs
- Peak month
- September
- Records since 2000
- 82
Camarota curvipennis
- Group
- True flies
- Peak month
- July
- Records since 2000
- 61
Scelio rugosulus
- Group
- Bees, wasps and ants
- Peak month
- July
- Records since 2000
- 60
Pexicopia malvella
- Group
- Butterflies and moths
- Peak month
- June
- Records since 2000
- 58
Xylota florum
- Group
- True flies
- Peak month
- July
- Records since 2000
- 58
Large Fruit Bark Beetle
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 56