Alpine Blue (Plebejus orbitulus)
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2018 photographs highlighted in green. Click on any photograph to go to an enlarged picture, or simply scroll down the page.
|8321_male_Valais, Switzerland_22Jul07||27363_male_Hautes-Alpes_15Jul11||31182_male_Valais, Switzerland_12Jul12|
|8402_female_Valais, Switzerland_22Jul07||13379_female_Valais, Switzerland_20Jul08||27373_male_Hautes-Alpes_15Jul11|
A very high altitude species that I had never seen in France prior to 2010, and only saw for the first time in 2007 at one location in Switzerland. I have since seen it in small numbers in several high altitude locations in France. The male is a gleaming blue with marked black borders on both wings (although somewhat wider on 8321 than is shown in T&L), although the key to this species is the unh round white marks without any black spots inside (clearly illustrated in 13370 and 27373), making this species quite unmistakeable.
It is perhaps slight smaller than an average Common Blue (Polyommatus icarus).
This species was previously known as Albulina orbitulus.
this male clearly shows the deep blue, especially toward the hindwing margins. The strong black borders of even width and the clear white fringes make it relatively easy to identify.
|27363||M||this is probably a better representation of the gleaming bright blue colour than 8321.||2550|
|31182||M||this fresh male clearly shows the gleaming bright blue colour.||2090|
this female shows the plain brown upperside, becoming quite black-brown near the margins, especially on the hindwing.
a female, plain dark brown but with a spattering of blue scales in the basal area of the forewing, and, strangely, around the discoidal spot.
|27373||M||the underside of a rather worn male, but at least it serves to illustrate the "empty" white unh spots. The unh ground colour is rather grey compared to the brownish illustration in T&L.||2550|
|31344||M||I cannot decide whether the underside is naturally dull or whether this is the result of wear (which was not apparent from the upperside).||2070|
the underside of 13379. the characteristic unh "empty" markings are clearly shown.