Sunday 25th July 2021, 10:30am-4:00pm

Online Virtual Zoom Workshop


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

56.767108334165, -3.841896059403

Search for the “Silver Shade” Eana argentana

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.  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.  However, surveys in 2019 and a student project in 2020 found the moth in good numbers in one small location on a 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.

Meeting place and timings

We will meet outside 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) at 10.30am.  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.


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

What’s needed

Plenty of sunshine, packed lunch, stout walking shoes and a good sense of humour!  Midge repellent and/or a midge hood may also be useful, as would a camera, hand lens, butterfly net and GPS or Grid Reference App on your Smart Phone.

For more information about the moth

Consider attending our Silver Shade (Eana argentana) free online workshop being held on Friday 23rd July 10-11am via Zoom.  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 a new attendee and want to know about this very rare moth. 

You can find more information about the virtual workshop and how to book a place here

For more information about the field trip contact

Tom Prescott, Butterfly Conservation Scotland

Email: @email

Tel: 01540 661469.  Mob: 07979 785665


Julia Duncan, Countryside Ranger, Atholl Estates


Tel: 01796 481355