Wild Oat
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 1,113
Species recorded in Essex
1,113 species
Essex — county
Bradysia trivittata
- Group
- True flies
- Peak month
- August
- Records since 2000
- 1,108
Latticed Heath
- Group
- Butterflies and moths
- Peak month
- June
- Records since 2000
- 1,107
Oak Apple Gall Causer
- Group
- Bees, wasps and ants
- Peak month
- May
- Records since 2000
- 1,088
Black-grass
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 1,086
Rosulabryum moravicum
- Group
- Mosses
- Peak month
- February
- Records since 2000
- 1,081
Beta maritima
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 1,064
Scale-eating ladybird beetle
- Group
- Beetles
- Peak month
- September
- Records since 2000
- 1,033
Dicraeus vagans
- Group
- True flies
- Peak month
- June
- Records since 2000
- 1,032
Red-legged harp ground beetle
- Group
- Beetles
- Peak month
- May
- Records since 2000
- 1,014
Psectrotanypus varius
- Group
- True flies
- Peak month
- April
- Records since 2000
- 984
Ladybird beetle
- Group
- Beetles
- Peak month
- August
- Records since 2000
- 982
Great Lettuce
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 956
Dot Ladybird
- Group
- Beetles
- Peak month
- August
- Records since 2000
- 952
Aphid
- Group
- True bugs
- Peak month
- May
- Records since 2000
- 887
Golden Samphire
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 858
Common Saltmarsh-grass
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 847
Bembidion varium
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 819
Ribautiana debilis
- Group
- True bugs
- Peak month
- June
- Records since 2000
- 817
Cow parsley leaf beetle
- Group
- Beetles
- Peak month
- May
- Records since 2000
- 800
Red-flanked Scymnus
- Group
- Beetles
- Peak month
- August
- Records since 2000
- 800
Star Gyro
- Group
- Molluscs
- Peak month
- May
- Records since 2000
- 772
Large Marsh Horsefly
- Group
- True flies
- Peak month
- July
- Records since 2000
- 765
Brown-tail
- Group
- Butterflies and moths
- Peak month
- July
- Records since 2000
- 755
Elymus athericus
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 722
Flax Flea Beetle
- Group
- Beetles
- Peak month
- May
- Records since 2000
- 712
Drosophila subobscura
- Group
- True flies
- Peak month
- June
- Records since 2000
- 711
Wilson's Phalarope
- Group
- Birds
- Peak month
- September
- Records since 2000
- 681
White-point
- Group
- Butterflies and moths
- Peak month
- August
- Records since 2000
- 674
Grass-leaved Orache
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 671
Corynoptera perpusilla
- Group
- True flies
- Peak month
- September
- Records since 2000
- 643
Bradysia urticae
- Group
- True flies
- Peak month
- October
- Records since 2000
- 641
Magpie Inkcap
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 607
Microlestes maurus
- Group
- Beetles
- Peak month
- May
- Records since 2000
- 594
Fire bug
- Group
- True bugs
- Peak month
- September
- Records since 2000
- 582
Eusarsiella zostericola
- Group
- Crustaceans
- Peak month
- June
- Records since 2000
- 579
Amara convexior
- Group
- Beetles
- Peak month
- May
- Records since 2000
- 575
Microlestes minutulus
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 574
Bembidion minimum
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 565
Common Millet
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 565
Smittia edwardsi
- Group
- True flies
- Peak month
- September
- Records since 2000
- 516
Bombardier Beetle
- Group
- Beetles
- Peak month
- May
- Records since 2000
- 490
Lesne's Earwig
- Group
- Other insects
- Peak month
- August
- Records since 2000
- 456
Shrubby Sea-blite
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 444
Migrant spreadwing
- Group
- Dragonflies and damselflies
- Peak month
- August
- Records since 2000
- 443
Canvasback
- Group
- Birds
- Peak month
- November
- Records since 2000
- 395
Trioxys sunnysidensis
- Group
- Bees, wasps and ants
- Peak month
- September
- Records since 2000
- 323
Rhyzobius forestieri
- Group
- Beetles
- Peak month
- August
- Records since 2000
- 315