Mountain Argus
- Group
- Butterflies and moths
- Peak month
- June
- Records since 2000
- 9,928
Described in 1793
58 species
Long-winged Conehead
- Group
- Grasshoppers and crickets
- Peak month
- August
- Records since 2000
- 8,597
Limnius volckmari
- Group
- Beetles
- Peak month
- April
- Records since 2000
- 7,662
Birch catkin bug
- Group
- True bugs
- Peak month
- August
- Records since 2000
- 5,955
German Wasp
- Group
- Bees, wasps and ants
- Peak month
- August
- Records since 2000
- 3,378
Pacific oyster, Japanese oyster, Miyagi oyster, Portuguese oyster, Pacific cupped oyster, Immigrant oyster, Giant pacific oyster, Giant oyster, Giant cupped oyster
- Group
- Molluscs
- Peak month
- May
- Records since 2000
- 2,859
Hill Cuckoo-Bee
- Group
- Bees, wasps and ants
- Peak month
- July
- Records since 2000
- 2,434
Cortinicara gibbosa
- Group
- Beetles
- Peak month
- May
- Records since 2000
- 1,901
Brassy Mining Bee
- Group
- Bees, wasps and ants
- Peak month
- July
- Records since 2000
- 1,746
Hairy Legged Mining Bee
- Group
- Bees, wasps and ants
- Peak month
- July
- Records since 2000
- 824
Lindenius albilabris
- Group
- Bees, wasps and ants
- Peak month
- June
- Records since 2000
- 800
Saxon Wasp
- Group
- Bees, wasps and ants
- Peak month
- July
- Records since 2000
- 765
Speckled Peter
- Group
- Caddisflies
- Peak month
- August
- Records since 2000
- 712
Common Sedge-sawfly
- Group
- Bees, wasps and ants
- Peak month
- July
- Records since 2000
- 707
Slender Ant
- Group
- Bees, wasps and ants
- Peak month
- June
- Records since 2000
- 637
Truffle Blacklet
- Group
- True flies
- Peak month
- July
- Records since 2000
- 618
Parrot Crossbill
- Group
- Birds
- Peak month
- December
- Records since 2000
- 525
Timothy Tortrix
- Group
- Butterflies and moths
- Peak month
- June
- Records since 2000
- 513
4-spotted Digger Wasp
- Group
- Bees, wasps and ants
- Peak month
- July
- Records since 2000
- 476
A water beetle
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 465
Lateroligia ophiogramma
- Group
- Butterflies and moths
- Peak month
- July
- Records since 2000
- 450
Pemphredon lugubris
- Group
- Bees, wasps and ants
- Peak month
- June
- Records since 2000
- 450
Leistus terminatus
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 424
Nomada rufipes
- Group
- Bees, wasps and ants
- Peak month
- August
- Records since 2000
- 356
Micromus variegatus
- Group
- Lacewings
- Peak month
- July
- Records since 2000
- 335
Crab
- Group
- Crustaceans
- Peak month
- September
- Records since 2000
- 324
Leptura aurulenta
- Group
- Beetles
- Peak month
- July
- Records since 2000
- 257
Andrena florea
- Group
- Bees, wasps and ants
- Peak month
- June
- Records since 2000
- 254
Aphelia paleana
- Group
- Butterflies and moths
- Peak month
- June
- Records since 2000
- 218
Monotoma picipes
- Group
- Beetles
- Peak month
- September
- Records since 2000
- 200
A bee
- Group
- Bees, wasps and ants
- Peak month
- June
- Records since 2000
- 190
Enochrus melanocephalus
- Group
- Beetles
- Peak month
- May
- Records since 2000
- 187
Meloe brevicollis
- Group
- Beetles
- Peak month
- May
- Records since 2000
- 187
Chernes cimicoides
- Group
- Mites, harvestmen and other arachnids
- Peak month
- June
- Records since 2000
- 181
Cis festivus
- Group
- Beetles
- Peak month
- May
- Records since 2000
- 181
Dotted fan-foot
- Group
- Butterflies and moths
- Peak month
- July
- Records since 2000
- 180
Cis castaneus
- Group
- Beetles
- Peak month
- May
- Records since 2000
- 177
Cryptophagus dentatus
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 174
Acrotrichis fascicularis
- Group
- Beetles
- Peak month
- July
- Records since 2000
- 155
Prays curtisella
- Group
- Butterflies and moths
- Peak month
- July
- Records since 2000
- 152
Brychius elevatus
- Group
- Beetles
- Peak month
- September
- Records since 2000
- 141
Enicmus rugosus
- Group
- Beetles
- Peak month
- July
- Records since 2000
- 136
Hemerobius micans
- Group
- Lacewings
- Peak month
- April
- Records since 2000
- 136
Catops tristis
- Group
- Beetles
- Peak month
- May
- Records since 2000
- 116
6-Banded Nomad Bee
- Group
- Bees, wasps and ants
- Peak month
- April
- Records since 2000
- 114
Orchesia micans
- Group
- Beetles
- Peak month
- July
- Records since 2000
- 104
Leistus terminatus
- Group
- Beetles
- Peak month
- May
- Records since 2000
- 96
Diodontus minutus
- Group
- Bees, wasps and ants
- Peak month
- July
- Records since 2000
- 94
Nothochrysa capitata
- Group
- Lacewings
- Peak month
- July
- Records since 2000
- 93
Achaius oratorius
- Group
- Bees, wasps and ants
- Peak month
- June
- Records since 2000
- 86
Hemerobius lutescens
- Group
- Lacewings
- Peak month
- June
- Records since 2000
- 83
Cerceris ruficornis
- Group
- Bees, wasps and ants
- Peak month
- July
- Records since 2000
- 77
Thanatophilus dispar
- Group
- Beetles
- Peak month
- April
- Records since 2000
- 76
Wesmaelius nervosus
- Group
- Lacewings
- Peak month
- June
- Records since 2000
- 75
Bereft scavenger beetle
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 72
Idotea emarginata
- Group
- Crustaceans
- Peak month
- August
- Records since 2000
- 68
Obrium brunneum
- Group
- Beetles
- Peak month
- May
- Records since 2000
- 56
Taphrorychus bicolor
- Group
- Beetles
- Peak month
- May
- Records since 2000
- 51