Spring Epistrophe
- Group
- True flies
- Peak month
- April
- Records since 2000
- 6,574
Species recorded in Essex
1,113 species
Essex — county
Red-necked Grebe
- Group
- Birds
- Peak month
- January
- Records since 2000
- 6,573
Bee Orchid
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 6,503
Gypsywort
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 6,492
Bearbind
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 6,477
Yellow Shell
- Group
- Butterflies and moths
- Peak month
- August
- Records since 2000
- 6,476
Kneiff's Feather-moss
- Group
- Mosses
- Peak month
- August
- Records since 2000
- 6,465
Black-tailed Aphideater
- Group
- True flies
- Peak month
- April
- Records since 2000
- 6,458
Common Rough Woodlouse
- Group
- Crustaceans
- Peak month
- April
- Records since 2000
- 6,413
Lesser Yoke-moss
- Group
- Mosses
- Peak month
- March
- Records since 2000
- 6,411
Flounced Rustic
- Group
- Butterflies and moths
- Peak month
- August
- Records since 2000
- 6,401
Barren Brome
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 6,383
Borage
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 6,379
Purple Toadflax
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 6,373
Scentless bug
- Group
- True bugs
- Peak month
- August
- Records since 2000
- 6,364
Canadian Waterweed
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 6,360
Mistletoe
- Group
- Flowering plants
- Peak month
- January
- Records since 2000
- 6,276
Wild Privet
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 6,265
Garden Spider
- Group
- Spiders
- Peak month
- September
- Records since 2000
- 6,249
Hard Rush
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 6,248
Barren Strawberry
- Group
- Flowering plants
- Peak month
- April
- Records since 2000
- 6,239
Froghopper
- Group
- True bugs
- Peak month
- May
- Records since 2000
- 6,233
Seedcorn Maggot
- Group
- True flies
- Peak month
- July
- Records since 2000
- 6,186
Cape Thread-moss
- Group
- Mosses
- Peak month
- March
- Records since 2000
- 6,160
Soft Brome
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 6,146
Rustic Sailor Beetle
- Group
- Beetles
- Peak month
- May
- Records since 2000
- 6,138
Black Horehound
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 6,109
Exogone naidina
- Group
- Worms (annelids)
- Peak month
- May
- Records since 2000
- 6,107
Sticky Mouse-ear
- Group
- Flowering plants
- Peak month
- April
- Records since 2000
- 6,100
Scarlet Pimpernel
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 6,084
Three-cornered Garlic
- Group
- Flowering plants
- Peak month
- April
- Records since 2000
- 6,061
Larger Mouse-tail Moss
- Group
- Mosses
- Peak month
- March
- Records since 2000
- 6,047
Timothy
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 6,033
Stinking Iris
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 6,013
Lilac
- Group
- Flowering plants
- Peak month
- May
- Records since 2000
- 6,008
Lyell's bristle-moss
- Group
- Mosses
- Peak month
- March
- Records since 2000
- 5,981
Red Valerian
- Group
- Flowering plants
- Peak month
- May
- Records since 2000
- 5,970
Birch catkin bug
- Group
- True bugs
- Peak month
- August
- Records since 2000
- 5,955
Eurasian Smoothwing
- Group
- True flies
- Peak month
- July
- Records since 2000
- 5,929
Three Spotted Nettle Bug
- Group
- True bugs
- Peak month
- July
- Records since 2000
- 5,901
Creeping Soft-grass
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 5,895
Parent Bug
- Group
- True bugs
- Peak month
- August
- Records since 2000
- 5,884
Shining Crane's-bill
- Group
- Flowering plants
- Peak month
- April
- Records since 2000
- 5,867
Hornbeam
- Group
- Flowering plants
- Peak month
- May
- Records since 2000
- 5,848
Spotted Meliscaeva
- Group
- True flies
- Peak month
- June
- Records since 2000
- 5,839
Juicy Silk-moss
- Group
- Mosses
- Peak month
- April
- Records since 2000
- 5,833
Opium Poppy
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 5,832
Sycamore Tarspot
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 5,798