Arion vulgaris
- Group
- Molluscs
- Records since 2000
- 425
- Peak month
- September
Synedra radians
- Group
- Seaweeds and algae
- Records since 2000
- 424
- Peak month
- September
Pseudopolydora antennata
- Group
- Worms (annelids)
- Records since 2000
- 423
- Peak month
- September
Grass green russula
- Group
- Fungi
- Records since 2000
- 417
- Scientific name
- Russula aeruginea
Flavoplaca polycarpa
- Group
- Lichens
- Records since 2000
- 416
- Peak month
- September
Brachysira neoexilis
- Group
- Seaweeds and algae
- Records since 2000
- 414
- Peak month
- September
Erysiphe urticae
- Group
- Fungi
- Records since 2000
- 409
- Peak month
- September
Oeder's map lichen
- Group
- Lichens
- Records since 2000
- 408
- Scientific name
- Rhizocarpon oederi
Suillus variegatus
- Group
- Fungi
- Records since 2000
- 407
- Peak month
- September
Puccinia menthae
- Group
- Fungi
- Records since 2000
- 405
- Peak month
- September
Sepia Bolete
- Group
- Fungi
- Records since 2000
- 405
- Scientific name
- Xerocomellus porosporus
Blushing Rosette
- Group
- Fungi
- Records since 2000
- 398
- Scientific name
- Abortiporus biennis
Pseudoinonotus dryadeus
- Group
- Fungi
- Records since 2000
- 398
- Peak month
- September
Crossocalyx hellerianus
- Group
- Liverworts
- Records since 2000
- 397
- Peak month
- September
Verrucaria elaeina
- Group
- Fungi
- Records since 2000
- 397
- Peak month
- September
Chionoloma cylindrotheca
- Group
- Mosses
- Records since 2000
- 396
- Peak month
- September
Haliclona simulans
- Group
- Sponges
- Records since 2000
- 396
- Peak month
- September
Limnophyes asquamatus
- Group
- True flies
- Records since 2000
- 396
- Peak month
- September
Amanita crocea
- Group
- Fungi
- Records since 2000
- 394
- Peak month
- September
Black Scabbardfish
- Group
- Fish
- Records since 2000
- 394
- Scientific name
- Aphanopus carbo
Brown Booby
- Group
- Birds
- Records since 2000
- 394
- Scientific name
- Sula leucogaster
Phragmidium bulbosum
- Group
- Fungi
- Records since 2000
- 394
- Peak month
- September
Cup lichen
- Group
- Lichens
- Records since 2000
- 392
- Scientific name
- Cladonia humilis
Praxillura longissima
- Group
- Worms (annelids)
- Records since 2000
- 390
- Peak month
- September
Russian olive
- Group
- Flowering plants
- Records since 2000
- 389
- Scientific name
- Elaeagnus pungens
Prickly saltwort
- Group
- Flowering plants
- Records since 2000
- 388
- Scientific name
- Salsola kali
River Skater
- Group
- True bugs
- Records since 2000
- 386
- Scientific name
- Aquarius najas
Deer Ked
- Group
- True flies
- Records since 2000
- 384
- Scientific name
- Lipoptena cervi
Nematus pavidus
- Group
- Bees, wasps and ants
- Records since 2000
- 384
- Peak month
- September
Aedes caspius
- Group
- True flies
- Records since 2000
- 383
- Peak month
- September
Cherry slug sawfly
- Group
- Bees, wasps and ants
- Records since 2000
- 383
- Scientific name
- Caliroa cerasi
Sargus flavipes
- Group
- True flies
- Records since 2000
- 383
- Peak month
- September
Phyllonorycter ulmifoliella
- Group
- Butterflies and moths
- Records since 2000
- 381
- Peak month
- September
Eucampia striata
- Group
- Seaweeds and algae
- Records since 2000
- 380
- Peak month
- September
Acrocordia salweyi
- Group
- Fungi
- Records since 2000
- 378
- Peak month
- September
Drymus brunneus
- Group
- True bugs
- Records since 2000
- 377
- Peak month
- September
Oerstedia dorsalis
- Group
- Other invertebrates
- Records since 2000
- 374
- Peak month
- September
Sherard's Downy-rose
- Group
- Flowering plants
- Records since 2000
- 373
- Scientific name
- Rosa sherardii
Acleris emargana
- Group
- Butterflies and moths
- Records since 2000
- 372
- Peak month
- September
Riccia cavernosa
- Group
- Liverworts
- Records since 2000
- 372
- Peak month
- September
Vestal
- Group
- Butterflies and moths
- Records since 2000
- 372
- Scientific name
- Rhodometra sacraria
Pyrenocollema lichen
- Group
- Fungi
- Records since 2000
- 367
- Scientific name
- Pyrenocollema halodytes
Halecium beanii
- Group
- Jellyfish, corals and anemones
- Records since 2000
- 366
- Peak month
- September
Amanita vaginata
- Group
- Fungi
- Records since 2000
- 364
- Peak month
- September
Yellow Mayfly
- Group
- Mayflies
- Records since 2000
- 362
- Scientific name
- Potamanthus luteus
Beania mirabilis
- Group
- Bryozoans
- Records since 2000
- 360
- Peak month
- September
Rocellaria dubia
- Group
- Molluscs
- Records since 2000
- 360
- Peak month
- September
Codium fragile
- Group
- Seaweeds and algae
- Records since 2000
- 359
- Peak month
- September