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Flora & Fauna (media)
Idas Blue (Plebejus idas)    (Butterflies)    24866
Foranderlig Blåfugl (dk)   Hedblåvinge (se)  
Idas Blue 977    (1 photos)
2022-06-25   Holmegaards Mose, Sjælland, Denmark

Imago. Male. With large spots on the frontwing.
Idas Blue 981    (1 photos)
2022-06-25   Holmegaards Mose, Sjælland, Denmark

Imago. Male.
Idas Blue 983    (2 photos)
2022-06-25   Holmegaards Mose, Sjælland, Denmark

Imago. Male.
Idas Blue 984    (1 photos)
2022-06-25   Holmegaards Mose, Sjælland, Denmark

Imago. Male.
Idas Blue 976    (1 photos)
2022-06-25   Holmegaards Mose, Sjælland, Denmark

Imago. Female.
Idas Blue 979    (2 photos)
2022-06-25   Holmegaards Mose, Sjælland, Denmark

Imago. Female. With some bluish color on the upperside, though very dark.
Idas Blue 978    (1 photos)
2022-06-25   Holmegaards Mose, Sjælland, Denmark

Imago.
Idas Blue 982    (1 photos)
2022-06-25   Holmegaards Mose, Sjælland, Denmark

Imago. Probably a female with the dark base color.
Idas Blue 834    (1 photos)
2022-07-01   Heatherhill, Sjælland, Denmark

Imago. Male. Rather narrow black border to the upperside.
Idas Blue 835    (1 photos)
2022-07-01   Heatherhill, Sjælland, Denmark

Imago. Male.
Idas Blue 837    (1 photos)
2022-07-01   Heatherhill, Sjælland, Denmark

Imago. Male. Narrow well-defined black border.
Idas Blue 838    (3 photos)
2022-07-01   Heatherhill, Sjælland, Denmark

Imago. Male. Narrow rather well-defined black border, though not as narrow as can be seen. The thin black border to the forewing is a good support for the species though, as are the round-looking black spots on the hindwing, below.
Idas Blue 840    (2 photos)
2022-07-01   Heatherhill, Sjælland, Denmark

Imago. Male. Normally the wide bluish cast to the underside is a good support for the Silver-studded Blue (Argusblåfugl), but I would guess that the black spots within the orange band on the hindwing are large and round, and therefore support it better as an Idas.
Idas Blue 833    (1 photos)
2022-07-01   Heatherhill, Sjælland, Denmark

Imago. Female. Looks rather dark the underside, why it is probably a female.
Idas Blue 836    (1 photos)
2022-07-01   Heatherhill, Sjælland, Denmark

Imago. Female. Rather dark, why probably female. The large round black spots within the orange band on the hindwing is a good indication of this species.
Idas Blue 839    (2 photos)
2022-07-01   Heatherhill, Sjælland, Denmark

Imago. Female. Dark underside indicate sex, supported by what looks like a blue cast to the upper wing, something that Silver-studded Blue [Arugsblåfugl] normally doesn't show in this part of the world.
Idas Blue 841    (3 photos)
2022-07-01   Heatherhill, Sjælland, Denmark

Imago. Female. Very worn. Dark below and blue on the upper part make it a female and the large black spots on the hindwing this species.
Idas Blue 855    (1 photos)
2022-07-03   Ulfshale, Møn, Denmark

Imago. Male.
Idas Blue 858    (1 photos)
2022-07-03   Ulfshale, Møn, Denmark

Imago. Male.
Idas Blue 862    (1 photos)
2022-07-03   Ulfshale, Møn, Denmark

Imago. Male. Semi-worn still allowing to see the well-defined black border, including on the front edge of the forewing, which silver-studded normally doesn't show.
Idas Blue 864    (1 photos)
2022-07-03   Ulfshale, Møn, Denmark

Imago. Male. The black border is thin but does look a bit blurry at the edge, but probably not enough to justify to suspect that it could be a silver-studded.
Idas Blue 866    (1 photos)
2022-07-03   Ulfshale, Møn, Denmark

Imago. Male.
Idas Blue 877    (1 photos)
2022-07-03   Ulfshale, Møn, Denmark

Imago. Male.
Idas Blue 856    (1 photos)
2022-07-03   Ulfshale, Møn, Denmark

Imago. Female. Typical female with bluish cast to upperside.
Idas Blue 859    (2 photos)
2022-07-03   Ulfshale, Møn, Denmark

Imago. Female. Nordens Fjärilar - Bo Söderström, mentions that the black spots inside the orange band on the hindwing are bigger and rounder on this species compared to Silver-studded.

The spots on this individual look big but the large one in the center has an almost pointed appearance proving the variation of this character, which might not be completely bullet-proof.
Idas Blue 863    (2 photos)
2022-07-03   Ulfshale, Møn, Denmark

Imago. Female. The two upperside animals are different, but I can't remember if the underside female in the background on photo 1 is the same as the one in photo number 2.
Idas Blue 865    (1 photos)
2022-07-03   Ulfshale, Møn, Denmark

Imago. Female. Female type. The black spots on the hindwing inside the orange band are small which, according to Nordens Fjärilar, indicate a silver-studded, but they also look nice round, and combined with zero observations of proven silver-studded this day, I decided to call it an Ida.
Idas Blue 853    (1 photos)
2022-07-03   Ulfshale, Møn, Denmark

Imago. Male and female. Mating. Male to the left.
Idas Blue 854    (1 photos)
2022-07-03   Ulfshale, Møn, Denmark

Imago. Very worn male with mating pair 853 in the background.

I guess these worn animals are impossible to identify since Silver-studded Blue also can be seen at this locality. But the fact that all identified animals look like Idas, I assume that these are too. At least it's nice to have them as a reference.
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