Drusus annulatus
- Group
- Caddisflies
- Peak month
- April
- Records since 2000
- 5,337
Described in 1837
91 species
Seven-armed Starfish
- Group
- Starfish and sea urchins
- Peak month
- September
- Records since 2000
- 5,026
Potamophylax cingulatus
- Group
- Caddisflies
- Peak month
- April
- Records since 2000
- 2,887
Deraeocoris lutescens
- Group
- True bugs
- Peak month
- August
- Records since 2000
- 2,268
Reticulated Dragonet
- Group
- Fish
- Peak month
- September
- Records since 2000
- 2,126
Pincer Blackclock
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 1,504
Stenophylax lateralis
- Group
- Caddisflies
- Peak month
- June
- Records since 2000
- 1,106
Mesophile Sunshiner
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 985
Pontania pedunculi
- Group
- Bees, wasps and ants
- Peak month
- August
- Records since 2000
- 915
Tetragoneura sylvatica
- Group
- True flies
- Peak month
- May
- Records since 2000
- 889
Darparnaud's Glass Snail
- Group
- Molluscs
- Peak month
- April
- Records since 2000
- 843
Callipallene brevirostris
- Group
- Other invertebrates
- Peak month
- August
- Records since 2000
- 801
Greenish Warbler
- Group
- Birds
- Peak month
- August
- Records since 2000
- 732
London riverbank ground beetle
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 730
Diastylis lucifera
- Group
- Crustaceans
- Peak month
- May
- Records since 2000
- 603
Small Heather Weevil
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 549
Mocydia crocea
- Group
- True bugs
- Peak month
- September
- Records since 2000
- 518
Hemicoelus fulvicornis
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 506
Sage Leafhopper
- Group
- True bugs
- Peak month
- July
- Records since 2000
- 454
Palaemon elegans
- Group
- Crustaceans
- Peak month
- August
- Records since 2000
- 444
Echiodon drummondii
- Group
- Fish
- Peak month
- November
- Records since 2000
- 323
Dolerus aeneus
- Group
- Bees, wasps and ants
- Peak month
- May
- Records since 2000
- 302
Scolytus intricatus
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 289
Lithophyllum incrustans
- Group
- Seaweeds and algae
- Peak month
- May
- Records since 2000
- 257
Lasiomma strigilatum
- Group
- True flies
- Peak month
- April
- Records since 2000
- 256
Leucophora obtusa
- Group
- True flies
- Peak month
- April
- Records since 2000
- 252
Crossocerus cetratus
- Group
- Bees, wasps and ants
- Peak month
- June
- Records since 2000
- 246
Atheta celata
- Group
- Beetles
- Peak month
- August
- Records since 2000
- 240
Acrotona exigua
- Group
- Beetles
- Records since 2000
- 212
- NBN Atlas records since 2000
- 214
Megacoelum infusum
- Group
- True bugs
- Peak month
- August
- Records since 2000
- 211
Ocyusa maura
- Group
- Beetles
- Peak month
- May
- Records since 2000
- 210
Badister dilatatus
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 203
Eupterycyba jucunda
- Group
- True bugs
- Peak month
- July
- Records since 2000
- 197
Pachnida nigella
- Group
- Beetles
- Peak month
- May
- Records since 2000
- 189
Pemphredon lethifer
- Group
- Bees, wasps and ants
- Peak month
- June
- Records since 2000
- 186
Diplocoelus fagi
- Group
- Beetles
- Peak month
- May
- Records since 2000
- 178
Arachnospila spissa
- Group
- Bees, wasps and ants
- Peak month
- June
- Records since 2000
- 177
Dorcatoma chrysomelina
- Group
- Beetles
- Peak month
- July
- Records since 2000
- 168
Orchesia minor
- Group
- Beetles
- Peak month
- July
- Records since 2000
- 168
Myllaena intermedia
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 136
Ceutorhynchus picitarsis
- Group
- Beetles
- Peak month
- May
- Records since 2000
- 132
Aedes punctor
- Group
- True flies
- Peak month
- May
- Records since 2000
- 130
Gymnomerus laevipes
- Group
- Bees, wasps and ants
- Peak month
- June
- Records since 2000
- 121
Microplontus campestris
- Group
- Beetles
- Peak month
- May
- Records since 2000
- 120
Delia frontella
- Group
- True flies
- Peak month
- May
- Records since 2000
- 119
Rhinoncus inconspectus
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 118
Henestaris laticeps
- Group
- True bugs
- Peak month
- June
- Records since 2000
- 117
Catops fuliginosus
- Group
- Beetles
- Peak month
- May
- Records since 2000
- 116
Xyleborinus saxesenii
- Group
- Beetles
- Peak month
- July
- Records since 2000
- 116
Ametastegia carpini
- Group
- Bees, wasps and ants
- Peak month
- May
- Records since 2000
- 114
Dinaraea aequata
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 110
Trachyzelotes pedestris
- Group
- Spiders
- Peak month
- July
- Records since 2000
- 110
Monochroa cytisella
- Group
- Butterflies and moths
- Peak month
- July
- Records since 2000
- 105
Crossocerus tarsatus
- Group
- Bees, wasps and ants
- Peak month
- June
- Records since 2000
- 102
Hydraena palustris
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 98
Ozyptila praticola
- Group
- Spiders
- Peak month
- June
- Records since 2000
- 97
Ebalia granulosa
- Group
- Crustaceans
- Peak month
- February
- Records since 2000
- 94
Alianta incana
- Group
- Beetles
- Peak month
- May
- Records since 2000
- 92
Aegires punctilucens
- Group
- Molluscs
- Peak month
- May
- Records since 2000
- 91
Alliopsis billbergi
- Group
- True flies
- Peak month
- April
- Records since 2000
- 90
Pegomya haemorrhoum
- Group
- True flies
- Peak month
- July
- Records since 2000
- 88
Magdalis memnonia
- Group
- Beetles
- Peak month
- July
- Records since 2000
- 86
Agrilus cyanescens
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 85
Apion rubens
- Group
- Beetles
- Peak month
- May
- Records since 2000
- 85
Cephalothrix rufifrons
- Group
- Other invertebrates
- Peak month
- May
- Records since 2000
- 82
Passaloecus corniger
- Group
- Bees, wasps and ants
- Peak month
- June
- Records since 2000
- 82
Phyllotreta ochripes
- Group
- Beetles
- Peak month
- May
- Records since 2000
- 81
Aphthona herbigrada
- Group
- Beetles
- Peak month
- August
- Records since 2000
- 79
Psammotettix sabulicola
- Group
- True bugs
- Peak month
- July
- Records since 2000
- 79
Scolytus rugulosus
- Group
- Beetles
- Peak month
- July
- Records since 2000
- 78
Anomalocera patersonii
- Group
- Crustaceans
- Peak month
- August
- Records since 2000
- 77
Agabus melanarius
- Group
- Beetles
- Peak month
- October
- Records since 2000
- 76
Rhopalus maculatus
- Group
- True bugs
- Peak month
- May
- Records since 2000
- 76
Apolephthisa subincana
- Group
- True flies
- Peak month
- April
- Records since 2000
- 72
Eupteryx notata
- Group
- True bugs
- Peak month
- July
- Records since 2000
- 72
Ceutorhynchus cochleariae
- Group
- Beetles
- Peak month
- May
- Records since 2000
- 71
Bolitochara obliqua
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 70
Phyllotreta tetrastigma
- Group
- Beetles
- Peak month
- May
- Records since 2000
- 68
Catops grandicollis
- Group
- Beetles
- Peak month
- August
- Records since 2000
- 67
Bembidion geniculatum
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 64
Macropsis cerea
- Group
- True bugs
- Peak month
- July
- Records since 2000
- 63
Phyllocolpa leucosticta
- Group
- Bees, wasps and ants
- Peak month
- May
- Records since 2000
- 63
Tachyusa constricta
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 63
Dolerus varispinus
- Group
- Bees, wasps and ants
- Peak month
- April
- Records since 2000
- 62
Schendyla nemorensis
- Group
- Centipedes
- Peak month
- April
- Records since 2000
- 62
Eustalomyia histrio
- Group
- True flies
- Peak month
- May
- Records since 2000
- 58
Euura tibialis
- Group
- Bees, wasps and ants
- Peak month
- September
- Records since 2000
- 58
Trapezonotus ullrichi
- Group
- True bugs
- Peak month
- June
- Records since 2000
- 53
Argogorytes fargeii
- Group
- Bees, wasps and ants
- Peak month
- June
- Records since 2000
- 52
Allocotocera pulchella
- Group
- True flies
- Peak month
- August
- Records since 2000
- 51
Thricops nigritellus
- Group
- True flies
- Peak month
- June
- Records since 2000
- 51