Autumn Webworm

Hyphantria cunea


Species Codes

B&F 2062a RES 72.0211

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DistributionPhenologyReporting RatePhotos

Species Account

An adventive species, on Annex A of the British List (Agassiz, Beavan and Heckford).

First Kent example taken in a garden in Dartford (VC16) in May 2022, which constitutes the third British record. As with previous records, this individual may be an immigrant or could have been accidentally imported.

Prior to this, one was attracted to light in a Hertfordshire garden in September 2014, the first British record. Another taken near Cambridge in May of the same year wasn't correctly identified until October.

The species is native to America but has been introduced across Europe.

The larvae feed in communal webs (which gives rise to the name 'Webworm') on a range of deciduous trees.


Wide range of deciduous trees

Distribution Map

The map below shows all records of Autumn Webworm (Hyphantria cunea) in the Kent database. If you've got a dot to add, please submit your records to us. Use the control below to filter by time span:


The graph below shows at which time of the year Autumn Webworm (Hyphantria cunea) can be expected to be recorded in Kent. Use the controls below to filter by VC and time span:

Reporting Rate

The graph below shows how the number of records of Autumn Webworm (Hyphantria cunea) submitted each year has changed over time. Use the control below to filter by VC:

Photo Gallery

Below is a selection of Autumn Webworm (Hyphantria cunea) images from Kent. If you would like to contribute any photographs, please email Click on a photo if you would like to see it larger.

External Links

For more information and images of Autumn Webworm (Hyphantria cunea), please take can be seen on the external pages listed below: