Main: (Geometridae / Geometrinae)
70.301 [B&F: 1668] Essex Emerald (Thetidia smaragdaria) (Fabricius, 1787)


Extinct in the British Isles, formerly in saltmarshes in parts of Kent and Essex, predominantly coastal. The last Essex colony died out in 1985 and the last wild Kent record was in 1991. Unlikely to be recorded in Hampshire or on the Isle of Wight. Wingspan 33-35 mm. Larva feeds on Sea Wormwood.

Flightime guide

Distribution Map

Historical distribution at tetrad resolution
Click for density map

Record Density

As above but the larger the symbol, the greater the number of records
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