Atlantic spider crab
- Group
- Crustaceans
- Peak month
- September
- Records since 2000
- 11,797
Described in 1922
26 species
Psychoda trinodulosa
- Group
- True flies
- Peak month
- July
- Records since 2000
- 2,668
Psychoda grisescens
- Group
- True flies
- Peak month
- February
- Records since 2000
- 2,409
Tanytarsus lestagei
- Group
- True flies
- Peak month
- June
- Records since 2000
- 752
Sycamore Cherry Mite
- Group
- Mites, harvestmen and other arachnids
- Peak month
- May
- Records since 2000
- 743
Alcyonium siderium
- Group
- Jellyfish, corals and anemones
- Peak month
- August
- Records since 2000
- 540
Limnophyes eltoni
- Group
- True flies
- Peak month
- September
- Records since 2000
- 476
Ophonus ardosiacus
- Group
- Beetles
- Peak month
- August
- Records since 2000
- 456
Nitzschia capitellata
- Group
- Seaweeds and algae
- Peak month
- September
- Records since 2000
- 448
Tipula staegeri
- Group
- True flies
- Peak month
- October
- Records since 2000
- 248
Atrichopogon winnertzi
- Group
- True flies
- Peak month
- December
- Records since 2000
- 229
Leucophora personata
- Group
- True flies
- Peak month
- May
- Records since 2000
- 224
Psychoda setigera
- Group
- True flies
- Peak month
- August
- Records since 2000
- 196
Lucilia ampullacea
- Group
- True flies
- Peak month
- August
- Records since 2000
- 181
Megaselia woodi
- Group
- True flies
- Peak month
- October
- Records since 2000
- 147
Calliphora uralensis
- Group
- True flies
- Peak month
- June
- Records since 2000
- 124
Sabatieria ornata
- Group
- Roundworms
- Peak month
- May
- Records since 2000
- 110
Nitzschia subacicularis
- Group
- Seaweeds and algae
- Peak month
- September
- Records since 2000
- 94
Tanytarsus arduennensis
- Group
- True flies
- Peak month
- September
- Records since 2000
- 94
Meta bourneti
- Group
- Spiders
- Records since 2000
- 80
- Counties with records
- 12
Quedius schatzmayri
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 73
Setosabatieria hilarula
- Group
- Roundworms
- Peak month
- November
- Records since 2000
- 62
Laingia psammae
- Group
- True bugs
- Peak month
- July
- Records since 2000
- 61
Desmodora pontica
- Group
- Roundworms
- Peak month
- November
- Records since 2000
- 53
Coscinodiscus pavillardii
- Group
- Seaweeds and algae
- Peak month
- September
- Records since 2000
- 51
Hydroptila angulata
- Group
- Caddisflies
- Peak month
- August
- Records since 2000
- 51