Channelled Wrack
- Group
- Seaweeds and algae
- Peak month
- September
- Records since 2000
- 2,729
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- Species by county
- Isle of Anglesey
Species recorded in Isle of Anglesey
778 species
Isle of Anglesey — county
19-spot Ladybird
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 2,718
Sessile Grimmia
- Group
- Mosses
- Peak month
- July
- Records since 2000
- 2,708
Amphora pediculus
- Group
- Seaweeds and algae
- Peak month
- September
- Records since 2000
- 2,661
Fever Fly
- Group
- True flies
- Peak month
- August
- Records since 2000
- 2,659
Common Sedgesitter
- Group
- True flies
- Peak month
- July
- Records since 2000
- 2,619
Curly Crisp-moss
- Group
- Mosses
- Peak month
- March
- Records since 2000
- 2,613
Hairy Whirligig
- Group
- Beetles
- Peak month
- September
- Records since 2000
- 2,611
Nectoporus sanmarkii
- Group
- Beetles
- Peak month
- April
- Records since 2000
- 2,581
Dwarf weaver
- Group
- Spiders
- Peak month
- June
- Records since 2000
- 2,531
Cheilosia morio
- Group
- True flies
- Peak month
- August
- Records since 2000
- 2,521
Bottle Sedge
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 2,462
Dark-footed harp ground beetle
- Group
- Beetles
- Peak month
- August
- Records since 2000
- 2,462
Hornhand Sedgesitter
- Group
- True flies
- Peak month
- August
- Records since 2000
- 2,435
Anacaena lutescens
- Group
- Beetles
- Peak month
- July
- Records since 2000
- 2,433
Sea-milkwort
- Group
- Flowering plants
- Peak month
- October
- Records since 2000
- 2,432
Late Needle Fly
- Group
- Stoneflies
- Peak month
- September
- Records since 2000
- 2,409
Leeches
- Group
- Worms (annelids)
- Peak month
- April
- Records since 2000
- 2,391
Lined Spittlebug
- Group
- True bugs
- Peak month
- July
- Records since 2000
- 2,379
Smudge-veined Fen Fly
- Group
- True flies
- Peak month
- August
- Records since 2000
- 2,378
Hygrotus inaequalis
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 2,372
Pale-saddled Leucozona
- Group
- True flies
- Peak month
- August
- Records since 2000
- 2,361
Common Tiger Fly
- Group
- True flies
- Peak month
- August
- Records since 2000
- 2,317
Sea Holly
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 2,310
Haliplus ruficollis
- Group
- Beetles
- Peak month
- July
- Records since 2000
- 2,303
Orange-legged Furrow Bee
- Group
- Bees, wasps and ants
- Peak month
- May
- Records since 2000
- 2,303
Synedra dissipata
- Group
- Seaweeds and algae
- Peak month
- September
- Records since 2000
- 2,300
Creeping Willow
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 2,272
11-spot Ladybird
- Group
- Beetles
- Peak month
- July
- Records since 2000
- 2,256
Laccobius bipunctatus
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 2,255
Nitzschia palea
- Group
- Seaweeds and algae
- Peak month
- September
- Records since 2000
- 2,250
Polycelis felina
- Group
- Flatworms
- Peak month
- April
- Records since 2000
- 2,250
Achnanthes oblongella
- Group
- Seaweeds and algae
- Peak month
- September
- Records since 2000
- 2,248
Sea Arrowgrass
- Group
- Flowering plants
- Peak month
- October
- Records since 2000
- 2,248
Common Green Colonel
- Group
- True flies
- Peak month
- July
- Records since 2000
- 2,246
Planothidium lanceolatum
- Group
- Seaweeds and algae
- Peak month
- September
- Records since 2000
- 2,245
Exilaria vaucheriae
- Group
- Seaweeds and algae
- Peak month
- April
- Records since 2000
- 2,228
Muscid fly
- Group
- True flies
- Peak month
- August
- Records since 2000
- 2,228
Cocconeis euglypta
- Group
- Seaweeds and algae
- Peak month
- September
- Records since 2000
- 2,218
Scotch Rose
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 2,211
Gomphonema intricatum
- Group
- Seaweeds and algae
- Peak month
- September
- Records since 2000
- 2,121
Starry Hoar-moss
- Group
- Mosses
- Peak month
- July
- Records since 2000
- 2,092
Planothidium frequentissimum
- Group
- Seaweeds and algae
- Peak month
- September
- Records since 2000
- 2,083
English Stonecrop
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 2,053
Phylidorea ferruginea
- Group
- True flies
- Peak month
- June
- Records since 2000
- 2,051
Fragilaria capucina
- Group
- Seaweeds and algae
- Peak month
- September
- Records since 2000
- 2,037
Common Heath
- Group
- Butterflies and moths
- Peak month
- May
- Records since 2000
- 2,028
Black-kneed Fen Fly
- Group
- True flies
- Peak month
- July
- Records since 2000
- 2,014