Legend floors

♂ OS - ♂ US - ♀ OS - ♀ US - is the upper side and lower side of the wing, Yuri, you're about sprashvaesh?

Alexander seems not quite of it. With male-female designations everything clear so designated not only butterflies.
But paired letters OS, and US, - somehow in general have never met, but also informative. If I understand correctly, the OS-is the upper side of the wings, and the US-ispod?
I asked about the letter U. I would like to find out what it stands for.It looks like an old, probably not used the designation-but still found. For example, such a designation is at the German entomologist seiza, I believe the 19th century. I got the impression that they used the letter U in the designation of the type specified is not exactly supposed. Just wanted to know more specific.

shield and bow Marsa- symbol of male, female mirror symbol Venery-
HW hind wings back wings
FW fore wings front fenders

Thank you for the extra!

UPF = upperside fore-wing
UPH = upperside hindwing
UNF- fore-wing underside
UPF -fore-wing upperside
UPS – fore-wing & hind-wing upper sides
Up = upperside
Un = underside

Clear. Well, the wings and the parties understood.

Entomologist Zajc Adalbert (Adalbert Seitz), and U, in this case, from the first letter of the word Unterseite - lower side (underside), is also found in combination Hinterflügel-Unterseite - underside of the rear wing.

http://www.lepiforum.de/lepiwiki.pl?Boloria_Angarensis - found here is short.