
Phengaris is a genus of gossamer-winged butterflies in the subfamily Polyommatinae. Commonly, these butterflies are called large blues, which if referring to a particular species is P. arion, a species resident in Europe and some parts of Asia.
GENUS
Phengaris est un genre paléarctique de lépidoptères de la famille des Lycaenidae et de la sous-famille des Polyommatinae. Il inclut actuellement les espèces précédemment placées dans le genre Maculinea. Ces papillons sont connus pour leur cycle de vie complexe, où la chenille doit effectuer une partie de son développement à l'intérieur d'une fourmilière.
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Phengaris is a genus of gossamer-winged butterflies in the subfamily Polyommatinae. Commonly, these butterflies are called large blues, which if referring to a particular species is P. arion, a species resident in Europe and some parts of Asia.
thumb|left|Underside of the large blue (P. arion), formerly in Maculinea in [[Rabastens-de-Bigorre, Hautes-Pyrénées, France]] Phengaris is currently defined to include the genus Maculinea. The type species of the latter was the Alcon blue ("M." alcon). This species was found to be less closely related to most other supposed members of Maculinea than the traditional Phengaris species, and hence the two genera were merged to form a monophyletic group. Alternatively, Maculinea could be restricted to the one or two species of "Alcon" blues, and the rest of it be separated as a new genus. But this would create two very small genera, which is generally avoided by modern taxonomists. As Phengaris is the older name, it thus replaces Maculinea.
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