Friday 23rd July 2021, 10:00am-11:00am

Online Virtual Zoom Workshop


  • Tom Prescott
  • Email: Tel: 01540 661469. Mob: 07979 785665.

57.0808414, -4.0526768

The Silver Shade

Eana argentana


Free Online Workshop

Friday 23rd July


Survey Day

Sunday 25th July

10.30am – 4pm

Glen Tilt, Blair Atholl



The Silver Shade (Eana argentana) is a small silvery day-flying moth that is only known in the UK from Glen Tilt, near Blair Atholl.  It was first discovered in the glen in 1875 and this remains its sole location in the UK.  It was originally thought to be confined to “one small spot” but in 1878 it was said to be “distributed over several miles”.  However, there have been very few sightings since 1940.  It was refound in 1985 and not recorded again until 2013 and 2014.  Surveys in 2019 and a student project in 2020 found the moth in good numbers in one small location.

The moth has been found on steep south facing grassy slopes.  The caterpillars have never been found in the wild in the UK but are thought to feed on grasses.

The adult moths are on the wing from around mid-July through to about mid-August.

Eana argentana is a High Priority species in Butterfly Conservation Scotland’s Conservation Strategy.  It is therefore important we determine its current status.

This virtual workshop is a repeat of the two held in 2020.  It is open to all whether you attended last year’s event and would like a reminder/revision, or if you are new attendee and want to know about this very rare moth.


The aim of the online workshop is to provide a brief history of the moth, its identification and ecology and raise the profile of one of the UK’s rarest species.  It is hoped that attendees will be sufficiently enthused to look for the moth in Glen Tilt and elsewhere and hopefully discover new colonies. 


Booking is essential as details on how to access the Online Zoom Virtual Workshop will only be sent to those that register an interest.  Full instructions on how to join the meeting will be sent out to those new to Zoom.

The online workshop will be held at 10am on Thursday morning and repeated on at 10am Saturday morning.  It is advisable to join the zoom room around ten to fifteen minutes before the start of the workshop in case of any last-minute technical difficulties.

To book a place please complete and submit our online Virtual Priority Butterfly and Moth Workshops 2021 booking form which can be found here

Survey Day

We will meet at 10.30am on Sunday 25th July at the Blair Atholl Visitor Information Centre which is on the Main Road in the centre of the village and immediately to the west of the bridge over the Tilt (Grid reference NN875654).  If using a sat nav PH18 5SP is the nearest postcode.  


After a quick welcome and introduction, we will split into smaller groups and set off up the glen, in as few cars as possible, to begin the search to try and find the moth in new locations away from its known site.  We will aim to finish by 4pm.  The road up the glen is readily accessible, with care by car, although those who’s cars have low ground clearance may prefer to leave it in the village. 

Anyone is welcome to attend, whether you have attended the Zoom training or not. 

Due to Covid-19 restrictions it is essential that you let us know you are planning to attend.  To book a place please complete and submit our Outside Event 2021 Booking Form which can be found here

For more information contact

Tom Prescott, Butterfly Conservation Scotland

Email: @email

Tel: 01540 661469.  Mob: 07979 785665.