Petty Pocket-moss
- Group
- Mosses
- Peak month
- March
- Records since 2000
- 1,663
- Home
- Species by county
- Monmouthshire
Species recorded in Monmouthshire
476 species
Monmouthshire — county
Whorled Tufa-moss
- Group
- Mosses
- Peak month
- March
- Records since 2000
- 1,632
Hornet Robberfly
- Group
- True flies
- Peak month
- August
- Records since 2000
- 1,628
Great snail-leech
- Group
- Worms (annelids)
- Peak month
- September
- Records since 2000
- 1,516
Cocconeis lineata
- Group
- Seaweeds and algae
- Peak month
- September
- Records since 2000
- 1,505
Lepidostoma basale
- Group
- Caddisflies
- Peak month
- September
- Records since 2000
- 1,403
Fountain Feather-moss
- Group
- Mosses
- Peak month
- March
- Records since 2000
- 1,402
Navicula tripunctata
- Group
- Seaweeds and algae
- Peak month
- September
- Records since 2000
- 1,396
Sea Lamprey
- Group
- Fish
- Peak month
- October
- Records since 2000
- 1,394
Cheumatopsyche lepida
- Group
- Caddisflies
- Peak month
- May
- Records since 2000
- 1,371
Willow Fly
- Group
- Stoneflies
- Peak month
- April
- Records since 2000
- 1,342
Flowering-rush
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 1,341
Surirella brebissonii
- Group
- Seaweeds and algae
- Peak month
- April
- Records since 2000
- 1,226
Serrate Ephemerum Moss
- Group
- Mosses
- Peak month
- October
- Records since 2000
- 1,211
Starry Thyme-moss
- Group
- Mosses
- Peak month
- April
- Records since 2000
- 1,204
Yellow May Dun
- Group
- Mayflies
- Peak month
- April
- Records since 2000
- 1,186
Small Dark Olive
- Group
- Mayflies
- Peak month
- September
- Records since 2000
- 1,117
Cocconeis pediculus
- Group
- Seaweeds and algae
- Peak month
- September
- Records since 2000
- 1,067
Achnanthes pyrenaica
- Group
- Seaweeds and algae
- Peak month
- September
- Records since 2000
- 1,027
Gomphonema olivaceum
- Group
- Seaweeds and algae
- Peak month
- April
- Records since 2000
- 1,026
Melosira varians
- Group
- Seaweeds and algae
- Peak month
- September
- Records since 2000
- 956
Awl-leaved Screw-moss
- Group
- Mosses
- Peak month
- April
- Records since 2000
- 946
Heterocladium flaccidum
- Group
- Mosses
- Peak month
- April
- Records since 2000
- 922
Hildenbrandia rivularis
- Group
- Seaweeds and algae
- Peak month
- July
- Records since 2000
- 903
Gomphonema minutum
- Group
- Seaweeds and algae
- Peak month
- September
- Records since 2000
- 877
Nitzschia fonticola
- Group
- Seaweeds and algae
- Peak month
- September
- Records since 2000
- 862
Fatfoot Pocket-moss
- Group
- Mosses
- Peak month
- August
- Records since 2000
- 817
Spiked Water-milfoil
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 805
Awl-leaved Earth-moss
- Group
- Mosses
- Peak month
- March
- Records since 2000
- 711
Diatoma vulgaris
- Group
- Seaweeds and algae
- Peak month
- September
- Records since 2000
- 698
Nitzschia sociabilis
- Group
- Seaweeds and algae
- Peak month
- April
- Records since 2000
- 674
Antocha vitripennis
- Group
- True flies
- Peak month
- April
- Records since 2000
- 672
Teesdale Feather-moss
- Group
- Mosses
- Peak month
- April
- Records since 2000
- 574
Navicula capitatoradiata
- Group
- Seaweeds and algae
- Peak month
- September
- Records since 2000
- 437
Perfoliate Pondweed
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 384
Twist-tip Feather-moss
- Group
- Mosses
- Peak month
- March
- Records since 2000
- 371
Yellow Mayfly
- Group
- Mayflies
- Peak month
- September
- Records since 2000
- 362
Girardia tigrina
- Group
- Flatworms
- Peak month
- September
- Records since 2000
- 305
River Water-Crowfoot
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 277
Navicula menisculus
- Group
- Seaweeds and algae
- Peak month
- September
- Records since 2000
- 231
Southern Silver Stiletto-fly
- Group
- True flies
- Peak month
- June
- Records since 2000
- 139
Rufous-tailed Rock Thrush
- Group
- Birds
- Peak month
- October
- Records since 2000
- 117
Marmora's Warbler
- Group
- Birds
- Peak month
- June
- Records since 2000
- 103
Scarce Hook-Tip
- Group
- Butterflies and moths
- Peak month
- June
- Records since 2000
- 52