The Triangle

Heterogenea asella


Species Codes

B&F 174 RES 53.002

Quick Links

DistributionPhenologyReporting RatePhotos

Species Account

A Red Data Book species, in Kent this moth is clustered around the Elham Vally/Barham Downs and Orlestone areas. However, as can be seen from the map, it has been found away from the known 'honeypot' sites and so it could be lurking in less well known Oak and Beech woodland in the County.

This species is really quite small, especially the male with a wing length of just 5-7mm, making it easily confused with some micros. For this reason, it could potentially be overlooked in suitable habitat.

Record Verification

Grade 1 adults are generally distinctive and unlikely to be confused with other species, but records outside documented range or flight period may require photos.

Distribution Map

The map below shows all records of The Triangle (Heterogenea asella) 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 The Triangle (Heterogenea asella) 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 The Triangle (Heterogenea asella) submitted each year has changed over time. Use the control below to filter by VC:

Photo Gallery

Below is a selection of The Triangle (Heterogenea asella) 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 The Triangle (Heterogenea asella), please take can be seen on the external pages listed below: