Rivulet
- Group
- Butterflies and moths
- Records since 2000
- 510
- Scientific name
- Perizoma affinitata
Empis nuntia
- Group
- True flies
- Records since 2000
- 509
- Peak month
- June
Hemicoelus fulvicornis
- Group
- Beetles
- Records since 2000
- 506
- Peak month
- June
Yellow Cluster Anemone
- Group
- Jellyfish, corals and anemones
- Records since 2000
- 506
- Scientific name
- Parazoanthus axinellae
Enchanter's stiltbug
- Group
- True bugs
- Records since 2000
- 505
- Scientific name
- Metatropis rufescens
Least Yellow-sorrel
- Group
- Flowering plants
- Records since 2000
- 505
- Scientific name
- Oxalis exilis
Gerris gibbifer
- Group
- True bugs
- Records since 2000
- 504
- Peak month
- June
Common Mallow Pear-shaped Weevil
- Group
- Beetles
- Records since 2000
- 503
- Scientific name
- Malvapion malvae
Ornate Brigadier
- Group
- True flies
- Records since 2000
- 503
- Scientific name
- Odontomyia ornata
Stenus latifrons
- Group
- Beetles
- Records since 2000
- 503
- Peak month
- June
Andrenine Bee
- Group
- Bees, wasps and ants
- Records since 2000
- 502
- Scientific name
- Andrena wilkella
Duvaucelia lineata
- Group
- Molluscs
- Records since 2000
- 502
- Peak month
- June
Four-dotted Footman
- Group
- Butterflies and moths
- Records since 2000
- 502
- Scientific name
- Cybosia mesomella
Molophilus ochraceus
- Group
- True flies
- Records since 2000
- 501
- Peak month
- June
Pale Oak Beauty
- Group
- Butterflies and moths
- Records since 2000
- 501
- Scientific name
- Hypomecis punctinalis
Alder Sucker
- Group
- True bugs
- Records since 2000
- 500
- Scientific name
- Psylla alni
Formica cunicularia
- Group
- Bees, wasps and ants
- Records since 2000
- 498
- Peak month
- June
Phylidorea squalens
- Group
- True flies
- Records since 2000
- 498
- Peak month
- June
Californian Poppy
- Group
- Flowering plants
- Records since 2000
- 493
- Scientific name
- Eschscholzia californica
Trixagus dermestoides
- Group
- Beetles
- Records since 2000
- 492
- Peak month
- June
Notiophilus aquaticus
- Group
- Beetles
- Records since 2000
- 491
- Peak month
- June
Phylus melanocephalus
- Group
- True bugs
- Records since 2000
- 491
- Peak month
- June
Crescent Bell
- Group
- Butterflies and moths
- Records since 2000
- 489
- Scientific name
- Epinotia bilunana
Pogonus chalceus
- Group
- Beetles
- Records since 2000
- 489
- Peak month
- June
Birch Clubhorn
- Group
- Bees, wasps and ants
- Records since 2000
- 487
- Scientific name
- Cimbex femoratus
Dyopedos monacanthus
- Group
- Crustaceans
- Records since 2000
- 487
- Peak month
- June
Mountain Everlasting
- Group
- Flowering plants
- Records since 2000
- 487
- Scientific name
- Antennaria dioica
Boreal Button Lichen
- Group
- Lichens
- Records since 2000
- 486
- Scientific name
- Buellia disciformis
Collared Pratincole
- Group
- Birds
- Records since 2000
- 486
- Scientific name
- Glareola pratincola
Dicheirotrichus gustavii
- Group
- Beetles
- Records since 2000
- 486
- Peak month
- June
Eastern Boreal Pixie-cup
- Group
- Lichens
- Records since 2000
- 486
- Scientific name
- Cladonia coccifera
Phaonia incana
- Group
- True flies
- Records since 2000
- 486
- Peak month
- June
Asparagus Beetle
- Group
- Beetles
- Records since 2000
- 485
- Scientific name
- Crioceris asparagi
Acartia clausi
- Group
- Crustaceans
- Records since 2000
- 484
- Peak month
- June
Lesser Meadow-rue
- Group
- Flowering plants
- Records since 2000
- 483
- Scientific name
- Thalictrum minus
Hydroporus obscurus
- Group
- Beetles
- Records since 2000
- 482
- Peak month
- June
Calocoris alpestris
- Group
- True bugs
- Records since 2000
- 481
- Peak month
- June
Eudasyphora cyanicolor
- Group
- True flies
- Records since 2000
- 481
- Peak month
- June
Orange-spot Piercer
- Group
- Butterflies and moths
- Records since 2000
- 481
- Scientific name
- Pammene aurana
Swan-feather Dwarf
- Group
- Butterflies and moths
- Records since 2000
- 481
- Scientific name
- Elachista argentella
Lavender-cotton
- Group
- Flowering plants
- Records since 2000
- 480
- Scientific name
- Santolina chamaecyparissus
Tragopogon minor
- Group
- Flowering plants
- Records since 2000
- 480
- Peak month
- June
Plicate Sweet-grass
- Group
- Flowering plants
- Records since 2000
- 471
- Scientific name
- Glyceria notata
Cerataulina bergonii
- Group
- Seaweeds and algae
- Records since 2000
- 470
- Peak month
- June
Sepsis punctum
- Group
- True flies
- Records since 2000
- 470
- Peak month
- June
Thistle Ermine
- Group
- Butterflies and moths
- Records since 2000
- 470
- Scientific name
- Myelois circumvoluta
Odacantha melanura
- Group
- Beetles
- Records since 2000
- 469
- Peak month
- June
White tit-sponge
- Group
- Sponges
- Records since 2000
- 467
- Scientific name
- Polymastia mamillaris