Smittia pratorum
- Group
- True flies
- Peak month
- March
- Records since 2000
- 2,852
Described in 1927
19 species
Prionospio multibranchiata
- Group
- Worms (annelids)
- Peak month
- August
- Records since 2000
- 1,536
Xenopelopia nigricans
- Group
- True flies
- Peak month
- March
- Records since 2000
- 490
Diplonevra pilosella
- Group
- True flies
- Peak month
- August
- Records since 2000
- 459
Perophora japonica
- Group
- Sea squirts
- Peak month
- July
- Records since 2000
- 403
Anopheles atroparvus
- Group
- True flies
- Peak month
- August
- Records since 2000
- 377
Botrylloides violaceus
- Group
- Sea squirts
- Peak month
- July
- Records since 2000
- 243
Euglesa pseudosphaerium
- Group
- Molluscs
- Peak month
- May
- Records since 2000
- 234
Shigella sonnei
- Group
- Microorganisms and protists
- Peak month
- March
- Records since 2000
- 173
Pronucula tenuis
- Group
- Molluscs
- Peak month
- February
- Records since 2000
- 159
A water beetle
- Group
- Beetles
- Peak month
- April
- Records since 2000
- 144
Limosina manicata
- Group
- True flies
- Peak month
- August
- Records since 2000
- 143
Macrosteles laevis
- Group
- True bugs
- Peak month
- August
- Records since 2000
- 136
Megaselia hilaris
- Group
- True flies
- Peak month
- May
- Records since 2000
- 101
Empis praevia
- Group
- True flies
- Peak month
- May
- Records since 2000
- 78
Mesacanthion diplechma
- Group
- Roundworms
- Peak month
- May
- Records since 2000
- 78
Phytobia iridis
- Group
- True flies
- Peak month
- October
- Records since 2000
- 67
Cataetyx laticeps
- Group
- Fish
- Peak month
- September
- Records since 2000
- 63
Hilara rejecta
- Group
- True flies
- Peak month
- July
- Records since 2000
- 56