False Ivy-Leaved Speedwell
- Group
- Flowering plants
- Peak month
- April
- Records since 2000
- 1,848
Species recorded in Essex
1,113 species
Essex — county
Greater Burrdock
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 1,815
Common sawfly
- Group
- Bees, wasps and ants
- Peak month
- August
- Records since 2000
- 1,810
Grass Vetchling
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 1,808
Welted Thistle
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 1,808
Lasiomma seminitidum
- Group
- True flies
- Peak month
- April
- Records since 2000
- 1,801
Small-flowered Crane's-bill
- Group
- Flowering plants
- Peak month
- May
- Records since 2000
- 1,780
Midland Hawthorn
- Group
- Flowering plants
- Peak month
- May
- Records since 2000
- 1,768
Red-footed Falcon
- Group
- Birds
- Peak month
- May
- Records since 2000
- 1,755
Pterostichus nigrita
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 1,752
Sea Purslane
- Group
- Flowering plants
- Peak month
- October
- Records since 2000
- 1,735
Wood Ant
- Group
- Bees, wasps and ants
- Peak month
- April
- Records since 2000
- 1,703
Greater Sea-spurrey
- Group
- Flowering plants
- Peak month
- October
- Records since 2000
- 1,691
Cobweb weaver
- Group
- Spiders
- Peak month
- August
- Records since 2000
- 1,685
Hound's-tongue
- Group
- Flowering plants
- Peak month
- May
- Records since 2000
- 1,679
Common Cow-wheat
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 1,675
Four-spotted Nephus
- Group
- Beetles
- Peak month
- September
- Records since 2000
- 1,665
Black-grass
- Group
- Flowering plants
- Peak month
- October
- Records since 2000
- 1,597
Acorn Weevil
- Group
- Beetles
- Peak month
- May
- Records since 2000
- 1,586
Scarce Emerald Damselfly
- Group
- Dragonflies and damselflies
- Peak month
- July
- Records since 2000
- 1,585
Spotted lacehopper
- Group
- True bugs
- Peak month
- May
- Records since 2000
- 1,581
Opilio canestrinii
- Group
- Mites, harvestmen and other arachnids
- Peak month
- August
- Records since 2000
- 1,560
Orthodicranum tauricum
- Group
- Mosses
- Peak month
- March
- Records since 2000
- 1,532
Marsh Frog
- Group
- Amphibians
- Peak month
- May
- Records since 2000
- 1,516
Southern green stink bug
- Group
- True bugs
- Peak month
- September
- Records since 2000
- 1,512
Pink-sorrel
- Group
- Flowering plants
- Peak month
- May
- Records since 2000
- 1,509
Narrow-leaved Ragwort
- Group
- Flowering plants
- Peak month
- October
- Records since 2000
- 1,460
Common Sea-lavender
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 1,415
Common carp, European carp, King carp, Mirror carp
- Group
- Fish
- Peak month
- June
- Records since 2000
- 1,413
Chaoborus flavicans
- Group
- True flies
- Peak month
- June
- Records since 2000
- 1,393
Willow Flea-beetle
- Group
- Beetles
- Peak month
- May
- Records since 2000
- 1,388
Large Flax Flea Beetle
- Group
- Beetles
- Peak month
- May
- Records since 2000
- 1,338
Stone Parsley
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 1,315
Empis trigramma
- Group
- True flies
- Peak month
- May
- Records since 2000
- 1,307
Striped oak bug
- Group
- True bugs
- Peak month
- May
- Records since 2000
- 1,283
Bradysia nitidicollis
- Group
- True flies
- Peak month
- June
- Records since 2000
- 1,267
Squirrel's Tail Fescue
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 1,244
Amara tibialis
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 1,233
Sea Club-rush
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 1,227
Lesser Screw-moss
- Group
- Mosses
- Peak month
- January
- Records since 2000
- 1,219
Pneumia trivialis
- Group
- True flies
- Peak month
- July
- Records since 2000
- 1,219
Cordylepherus viridis
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 1,201
Ischnopterapion loti
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 1,199
Brown-line Bright Eye
- Group
- Butterflies and moths
- Peak month
- July
- Records since 2000
- 1,179
Cretan bryony
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 1,142
Salsify
- Group
- Flowering plants
- Peak month
- May
- Records since 2000
- 1,134
Meadow Barley
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 1,118
Southern Crestwort
- Group
- Liverworts
- Peak month
- April
- Records since 2000
- 1,117