White-letter Hairstreak Satyrium w-album

Short tails, so presumably a male.
Short tails, so presumably a male.
Long tails, so presumably a female.
Long tails, so presumably a female.
A pair mating.
A pair mating.
Convergence on a late season thistle
Convergence on a late season thistle
To warm up, turns underside to be at right-angles to the sun.
To warm up, turns underside to be at right-angles to the sun.
Female laying on a terminal elm bud.
Female laying on a terminal elm bud.
Larva
Larva
Larva
Larva
Pupa
Pupa
Pupa
Pupa
 
Information

Law: Protection under the Wildlife and Countryside Act 1981.
Red List status: Vulnerable
NERC Act S41: Species of Principal Importance
Local status: Uncommon. Lives in small colonies.
Probably under-recorded.
Reported less from the south of the county - is this just recording effort?
Size: Small.
Larval foodplant: English Elm and Wych Elm.
No. of broods: One.
Flight time(s): Late June to early August.
Average first date: 28th June
Average last date: 4th August
Winter: Egg.
Habits: Feed on honeydew in mature trees, but may visit nearby creeping thistle and brambles, where they spend a lot of time feeding on a single flower, before walking to another. It can be approached very closely. May be seen flitting around the canopy chasing one another.
Habitats: Woods and hedgerows where Elms are found.
Distribution: