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

Kent Moth Group


Grass Eggar

Lasiocampa trifolii

Family: Lasiocampidae

RES: 66.006 B&F: 1636

Verification Grade (Adult):

The nominate subspecies trifolii doesn't occur in Kent, but the subspecies flava (known as the Pale Grass Eggar), is found at Dungeness, and nowhere else in the UK. The map below shows sporadic dots at other locations in Kent, but this species is only confirmed as breeding at Dungeness. Grass Eggar is a distinctive moth, large with brown wings and obvious white spots in the middle of the forewings. Pale Grass Eggar is much paler and therefore, despite its smaller size, could be mistaken at a glance for Oak Eggar. However, Grass Eggar and Pale Grass Eggar both have two crosslines whereas Oak Eggar has only one.

Flight Season: July to early September

© Vicky Aitkenhead

Quick Navigation:

Distribution in Kent

The map below shows the distribution of records of Grass Eggar (Lasiocampa trifolii) 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 Grass Eggar (Lasiocampa trifolii) 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 Grass Eggar (Lasiocampa trifolii) 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 Grass Eggar (Lasiocampa trifolii) 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 Grass Eggar (Lasiocampa trifolii) can be seen on the external pages listed below: