The header of the website, featuring the micro moth Olethreutes arcuella

Kent Moth Group


Sussex Emerald

Thalera fimbrialis

Family: Geometridae

RES: 70.304 B&F: 1672

Verification Grade (Adult):

An endangered Red Data Book species, previously thought to be confined to shingle at Dungeness, Kent, but now also present further around the coast to Kingsdown.

More recently discovered at Stodmarsh NNR, in 2018. 

Fully protected under the UK Wildlife and Countryside Act, and a priority species under the UK Biodiversity Action Plan.

Quick Navigation:

Distribution in Kent

The map below shows the distribution of records of Sussex Emerald (Thalera fimbrialis) within Kent. Use the control below to show data for a certain time period. If you've got a dot to add, please submit your records to us. Click here for more information on how to submit data.

Filter by Time Period:AllPre-19501950 - 20002000 - 2022


The graph below shows at which time of the year Sussex Emerald (Thalera fimbrialis) can be expected to be recorded in Kent. Hover over the graph to see exact figures for each period of the year, and use the controls below to filter by VC and time span:

Filter by VC:AllVC15VC16

Filter by Time Period:AllPre-20002000 - 2022

Photo Gallery

Below is a gallery of Sussex Emerald (Thalera fimbrialis) images from Kent. If you would like to contribute any photographs, please email

Reporting Rate

The graph below shows how the number of records submitted Sussex Emerald (Thalera fimbrialis) to the Kent database has varied since 1950. Hover over the graph to see exact figures for each year, and use the control below to filter by a certain VC.

Filter by VC:AllVC15VC16

External Links

More information about Sussex Emerald (Thalera fimbrialis) can be seen on the external pages listed below: