Iris Flea Beetle
- Group
- Beetles
- Records since 2000
- 870
- Scientific name
- Aphthona nonstriata
Urothoe poseidonis
- Group
- Crustaceans
- Records since 2000
- 867
- Peak month
- May
Bloody Heart Lichen
- Group
- Lichens
- Records since 2000
- 864
- Scientific name
- Mycoblastus sanguinarius
Quaker comfrey
- Group
- Flowering plants
- Records since 2000
- 864
- Scientific name
- Symphytum uplandicum
Douglas Fir
- Group
- Conifers
- Records since 2000
- 863
- Scientific name
- Pseudotsuga menziesii
Chrysotoxum arcuatum
- Group
- True flies
- Records since 2000
- 862
- Peak month
- May
Pachyphiale carneola
- Group
- Lichens
- Records since 2000
- 861
- Peak month
- May
White-barred peat hoverfly
- Group
- True flies
- Records since 2000
- 858
- Scientific name
- Sericomyia lappona
Common Gromwell
- Group
- Flowering plants
- Records since 2000
- 856
- Scientific name
- Lithospermum officinale
Perennial Cornflower
- Group
- Flowering plants
- Records since 2000
- 851
- Scientific name
- Centaurea montana
St George's Mushroom
- Group
- Fungi
- Records since 2000
- 851
- Scientific name
- Calocybe gambosa
Willow Leaf Beetle
- Group
- Beetles
- Records since 2000
- 851
- Scientific name
- Lochmaea caprea
Bembidion mannerheimii
- Group
- Beetles
- Records since 2000
- 850
- Peak month
- May
May Highflyer
- Group
- Butterflies and moths
- Records since 2000
- 850
- Scientific name
- Hydriomena impluviata
Violella fucata
- Group
- Lichens
- Records since 2000
- 844
- Peak month
- May
Rock snail
- Group
- Molluscs
- Records since 2000
- 842
- Scientific name
- Pyramidula pusilla
Agrilinus ater
- Group
- Beetles
- Records since 2000
- 839
- Peak month
- May
Corynoptera inundata
- Group
- True flies
- Records since 2000
- 835
- Peak month
- May
Garden Star-of-Bethlehem
- Group
- Flowering plants
- Records since 2000
- 835
- Scientific name
- Ornithogalum umbellatum
Nephtys longosetosa
- Group
- Worms (annelids)
- Records since 2000
- 833
- Peak month
- May
Spring Harvestman
- Group
- Mites, harvestmen and other arachnids
- Records since 2000
- 831
- Scientific name
- Rilaena triangularis
Box-leaf honeysuckle
- Group
- Flowering plants
- Records since 2000
- 829
- Scientific name
- Lonicera pileata
Herb-Paris
- Group
- Flowering plants
- Records since 2000
- 829
- Scientific name
- Paris quadrifolia
Large Bitter-cress
- Group
- Flowering plants
- Records since 2000
- 829
- Scientific name
- Cardamine amara
Lined Click Beetle
- Group
- Beetles
- Records since 2000
- 829
- Scientific name
- Agriotes lineatus
Bembidion dentellum
- Group
- Beetles
- Records since 2000
- 828
- Peak month
- May
Large pine weevil
- Group
- Beetles
- Records since 2000
- 827
- Scientific name
- Hylobius abietis
Dasytes aeratus
- Group
- Beetles
- Records since 2000
- 825
- Peak month
- May
Cabbage Maggot
- Group
- True flies
- Records since 2000
- 821
- Scientific name
- Delia radicum
White-lipped Ramshorn
- Group
- Molluscs
- Records since 2000
- 818
- Scientific name
- Anisus leucostoma
Bathyporeia pilosa
- Group
- Crustaceans
- Records since 2000
- 814
- Peak month
- May
Broad-barred Brusheye
- Group
- True flies
- Records since 2000
- 813
- Scientific name
- Dasysyrphus venustus
Hydroporus nigrita
- Group
- Beetles
- Records since 2000
- 807
- Peak month
- May
Moth
- Group
- Butterflies and moths
- Records since 2000
- 806
- Scientific name
- Esperia sulphurella
Snowy Disco
- Group
- Fungi
- Records since 2000
- 805
- Scientific name
- Lachnum virgineum
Puss Moth
- Group
- Butterflies and moths
- Records since 2000
- 803
- Scientific name
- Cerura vinula
Indian Rhubarb
- Group
- Flowering plants
- Records since 2000
- 801
- Scientific name
- Darmera peltata
Cow parsley leaf beetle
- Group
- Beetles
- Records since 2000
- 800
- Scientific name
- Chrysolina oricalcia
Powdery Kidney Lichen
- Group
- Lichens
- Records since 2000
- 798
- Scientific name
- Nephroma parile
White-spotted Pug
- Group
- Butterflies and moths
- Records since 2000
- 798
- Scientific name
- Eupithecia tripunctaria
Cumella pygmaea
- Group
- Crustaceans
- Records since 2000
- 797
- Peak month
- May
Rhodine gracilior
- Group
- Worms (annelids)
- Records since 2000
- 796
- Peak month
- May
Blue-gray Sunken-disk
- Group
- Lichens
- Records since 2000
- 793
- Scientific name
- Circinaria caesiocinerea
Harpalus tardus
- Group
- Beetles
- Records since 2000
- 792
- Peak month
- May
Large Hook-moss
- Group
- Mosses
- Records since 2000
- 791
- Scientific name
- Drepanocladus lycopodioides
Glanville Fritillary
- Group
- Butterflies and moths
- Records since 2000
- 788
- Scientific name
- Melitaea cinxia
Rose-petalled Jellyskin Lichen
- Group
- Lichens
- Records since 2000
- 788
- Scientific name
- Scytinium gelatinosum
Rove beetle
- Group
- Beetles
- Records since 2000
- 788
- Scientific name
- Tachinus rufipes