Indeed, I should be in Spain right now, and it is not clear when I will be able to get back home to Switzerland this year. Like everyone, I look forward to making amazing discoveries in my own garden in 2020, but here's to 2019 anyway ...
No.1 risks boring the pants off anyone who knows me, but I have no choice. I had to be in Switzerland at the tail-end of June for school graduation and could only stay a week, so my chances of finding
Erebia christi (Rätzer's ringlet) were low. I paid one visit, on 6th July, to the most accessible site I know for public transport and bike, and by a wonderful stroke of chance found a single, fresh male. My photos of him are rubbish but he marks the highlight of the year (as
christi always does).

(
Erebia christi)

(
Erebia christi)
Nos. 2 and 3 are my two lifers of 2019:
Scolitantides abencerragus (false baton blue) and
Carcharodus tripolinus (southern mallow skipper), both from my spring trip to Málaga. I might have seen the latter before but I think this is the first one in a region where it could only be this, because
alceae doesn't fly there. It is certainly the only photographed individual I have from such a region.

(
Scolitantides abencerragus)

(
Carcharodus tripolinus)
From the same trip,
Danaus plexippus (monarch) was a great pleasure. I'm used to seeing this in Spain now but it is a wonderful butterfly to watch so comes in at no. 4:
I'm not sure about order for the rest, and it's a bit arbitrary anyway, choosing among so many lovely species. So here are nos. 5-10, rather at random:

(
Boloria thore - Thor's fritillary - in Switzerland, on 5th July)

(
Phengaris telejus - scarce large blue - in Switzerland on 4th July)

(Female
Parnassius apollo - Apollo - apparently laying, though I'm not sure what on, on my local mountain on 30th June)

(Cupido lorquinii - Lorquin's blue - in Spain on 3rd April)

(An unusually amenable
Erebia pandrose - dewy ringlet - in Switzerland on 2nd July)
And just because I like the picture, here's a
helice female of
Colias crocea (clouded yellow) in Málaga on 2nd April:
I know I'll suddenly think of some wonderful sighting I should have included, but this will do for now!
Guy