Thanks for your comments. - About Euchloe eversi: indeed it seems like - although the best known flight locations at the Canadas clearly have a later flight period - the less known locations at Masca more follow the flight period of the related taxa on Gran Canaria and Fuerteventura, see for example...

And for the period you want to go, I would suggest some Lycaenids to focus on. - Plebejus hespericus is an Iberian endemic, most of the populations can be found in the centre of Spain, in the mountains from the Madrid region to Teruel. A few populations however still exist in Andalucia. From one loc...

I have published some posts of my February visit to Tenerife and La Gomera.
Best to start at the first post as this contains some background information on the Canary islands:
http://westpalbutterflies.blogspot.be/2 ... chive.html

You might find this website informative, although the lay-out is a bit oldfashioned. It is the site of an Andalucian lepidopterist, Felipe Gil-T. - and gathers all his published papers, lot of them - not all - are about Andalucian butterflies.
http://gil-t.comze.com/publications.htm

The dunes populations of QoS in Belgium/The Netherlands are indeed resident populations, wintering however happens - if I'm correct - as half grown/nearly full grown larva and not as imago as suggested higher up. In Belgium we have populations inland also, mainly on sandy or calcareous soils (soils ...

From France The QoS doesn't seem to like lowland coastal areas. That might go a long way to explaining why QoS hasn't become established in England. There is no substantial high ground in England near the arrival area of vagrant QoS in the south and east. The South Downs are presumably too low. Yet...

I would suggest Erebia aethiops for the first and last individual. A variable species as well. This would fit better with the late observation time as well, E. meolans is a rather early species.

For those who want to travel to southeastern Europe next year and are planning to search for purple emperors Apatura species, I have posted a blogpost that can be interesting:

http://westpalbutterflies.blogspot.be/2 ... peror.html

Well, a feature commonly shared by most books is that they are already outdated when they get published. Recent distribution maps of P. mannii can be found online for several of the German regions (you should fill in the scientific name in the correct bar). Baden-Württenberg : http://www.schmetterli...

Unfortunately for British butterfly enthusiasts I don't believe the UK is in immediate reach of P. mannii. The northwards expansion of the species involves the subspecies 'alpigena'. First stories of it's expansion started in 2008 in Switserland (only in Valais and very locally in Ticino prior to 20...

Hi Neil, thanks for the update. However, on the link you post I read: Unprecedented numbers (200+) have been seen in Belgium during August, This is not true, most probably those numbers came from the website I posted earlier ( http://www.waarnemingen.be ) where people can post their observations and...

I must admit that I should test this feature on for example collection specimens. I have tested it a bit on pictures on an observations website widely used in the Netherlands (where aglaja and niobe fly together) and Belgium (where aglaja and adippe fly together). But testing it on collection specim...

This looks better, most probably:

A very difficult one. I've made an image some time ago for a Dutch forum with uppersides of the females of the 3 Argynnis look-a-like species. The pictures of the collection specimens are from the Dutch website http://www.vlindernet.nl . A. aglaja has the submarginal dots mostly on one line while in...

Colias hyale/alfacariensis. But in my opinion it is impossible to make the difference from field pictures. A more rounded wing tip (individual 1) should be suggestive for alfacariensis and a pointed wingtip (individual 3) for hyale but this is all very dependent on individual variety, position of bu...

In Belgium there is an influx of long-tailed blues the last few weeks. There has been sightings at some 25 to 30 locations involving some 35 butterflies. This is more than with the influx of 2 years ago when there were sightings at some 15 locations (with some 35 sightings in total prior to 2013 in ...

No long-tailed blues in the UK in 2015? In Belgium we have at least 19 sightings on 17 locations this year, more than in 2013 in total. One of them was at lunch today in the garden at my work .

I have started to put some information on my recent trip to Armenia on my blog. More to follow.

http://westpalbutterflies.blogspot.be/2 ... eface.html

As far as I know 'debilis' is the taxon flying in the Pyrenees and 'glaciegenita' is flying in the Alps, however, me to would like to see more literature solving this problem.

the female illustrated (photos Perry Fairman) might be a better match for Large Tortoiseshell not Scarce (the paler patches adjacent to dark splodges). Jack I think you are referring to this picture http://www.ukbutterflies.co.uk/phpBB/gallery/images/upload/fab0fa74a870d5fc713202ba06f98962.jpg In m...