Ross Worm
- Group
- Worms (annelids)
- Peak month
- June
- Records since 2000
- 12,869
Described in 1849
46 species
Centropages typicus
- Group
- Crustaceans
- Peak month
- September
- Records since 2000
- 7,143
Brown House Moth
- Group
- Butterflies and moths
- Peak month
- July
- Records since 2000
- 6,590
Mountain Bumble Bee
- Group
- Bees, wasps and ants
- Peak month
- June
- Records since 2000
- 4,024
Gomphonema parvulum
- Group
- Seaweeds and algae
- Peak month
- September
- Records since 2000
- 2,885
Ground-moss Grey
- Group
- Butterflies and moths
- Peak month
- August
- Records since 2000
- 1,486
Common Awl Robberfly
- Group
- True flies
- Peak month
- June
- Records since 2000
- 907
Blyth's Reed Warbler
- Group
- Birds
- Peak month
- June
- Records since 2000
- 685
Common Rush Case-bearer
- Group
- Butterflies and moths
- Peak month
- September
- Records since 2000
- 545
Gnathia vorax
- Group
- Crustaceans
- Peak month
- August
- Records since 2000
- 423
Phyllotreta vittula
- Group
- Beetles
- Peak month
- August
- Records since 2000
- 399
Pammene regiana
- Group
- Butterflies and moths
- Peak month
- June
- Records since 2000
- 330
Laccobius sinuatus
- Group
- Beetles
- Peak month
- September
- Records since 2000
- 319
Bembidion clarkii
- Group
- Beetles
- Peak month
- May
- Records since 2000
- 306
Desmoulin's whorl snail
- Group
- Molluscs
- Peak month
- October
- Records since 2000
- 297
Elegant Tern
- Group
- Birds
- Peak month
- July
- Records since 2000
- 255
Gastroclonium reflexum
- Group
- Seaweeds and algae
- Peak month
- August
- Records since 2000
- 255
Genistogethes carinulatus
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 254
Sarcophaga anaces
- Group
- True flies
- Peak month
- June
- Records since 2000
- 239
Pegomya flavifrons
- Group
- True flies
- Peak month
- July
- Records since 2000
- 196
Agonopterix ciliella
- Group
- Butterflies and moths
- Peak month
- May
- Records since 2000
- 191
Egle ciliata
- Group
- True flies
- Peak month
- March
- Records since 2000
- 188
Argyresthia spinosella
- Group
- Butterflies and moths
- Peak month
- June
- Records since 2000
- 178
Eudonia delunella
- Group
- Butterflies and moths
- Peak month
- July
- Records since 2000
- 161
Ixodes canisuga
- Group
- Mites, harvestmen and other arachnids
- Peak month
- January
- Records since 2000
- 154
Green Spruce Aphid
- Group
- True bugs
- Peak month
- May
- Records since 2000
- 138
Dixa puberula
- Group
- True flies
- Peak month
- September
- Records since 2000
- 128
Surirella minuta
- Group
- Seaweeds and algae
- Peak month
- April
- Records since 2000
- 128
Zelleria hepariella
- Group
- Butterflies and moths
- Peak month
- July
- Records since 2000
- 121
Encyonema caespitosum
- Group
- Seaweeds and algae
- Peak month
- May
- Records since 2000
- 120
Andrena similis
- Group
- Bees, wasps and ants
- Peak month
- June
- Records since 2000
- 113
Coenosia antennata
- Group
- True flies
- Peak month
- June
- Records since 2000
- 112
Bellardia pandia
- Group
- True flies
- Peak month
- July
- Records since 2000
- 104
Elachista atricomella
- Group
- Butterflies and moths
- Peak month
- June
- Records since 2000
- 97
Campsicnemus armatus
- Group
- True flies
- Peak month
- June
- Records since 2000
- 81
Agonopterix subpropinquella
- Group
- Butterflies and moths
- Peak month
- April
- Records since 2000
- 79
Phytomyza aquilegiae
- Group
- True flies
- Peak month
- June
- Records since 2000
- 74
Meligethes atramentarius
- Group
- Beetles
- Peak month
- July
- Records since 2000
- 69
Coleophora albitarsella
- Group
- Butterflies and moths
- Peak month
- July
- Records since 2000
- 66
Closterium parvulum
- Group
- Seaweeds and algae
- Peak month
- July
- Records since 2000
- 63
Myrmica rugulosa
- Group
- Bees, wasps and ants
- Peak month
- July
- Records since 2000
- 60
Schizaphis rufula
- Group
- True bugs
- Peak month
- July
- Records since 2000
- 60
Siphona maculata
- Group
- True flies
- Peak month
- May
- Records since 2000
- 59
Atomaria scutellaris
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 57
Platycheirus immarginatus
- Group
- True flies
- Peak month
- June
- Records since 2000
- 54
Meiosimyza vittata
- Group
- True flies
- Peak month
- May
- Records since 2000
- 53