Plebejus glandon
(de Prunner, 1798)
Arctic Blue, Glandon Blue
Species Guides
5Plebejus glandon, commonly known as the Arctic Blue or Glandon Blue, is a small lycaenid found in alpine and arctic regions of Europe. It is currently classified under the Agriades by some authorities, though historically placed in Plebejus. The inhabits high-elevation and has been documented across mountainous regions of central and southern Europe. Like other members of the Lycaenidae , it likely engages in associations with ants, though specific behavioral details for this species are not well documented in the provided sources.
Pronunciation
How to pronounce Plebejus glandon: /ˈplɛbɛjus ˈɡlandɔn/
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Identification
Distinguished from similar alpine blue butterflies by combination of preference, wing pattern details, and geographic distribution. Requires examination of underside spotting pattern and comparison with sympatric Plebejus/Agriades . Genitalic dissection may be necessary for definitive identification from closely related .
Images
Appearance
Small with blue upperwing coloration in males; females typically exhibit more brownish or grayish tones with variable blue scaling. Underside grayish with black spots and marginal orange markings. Wing pattern similar to other Plebejus/Agriades , requiring close examination for identification.
Habitat
Alpine and subalpine zones, including rocky slopes, meadows, and scree fields at high elevations. Associated with mountainous terrain in arctic-alpine environments.
Distribution
Europe: documented from Andorra, Austria, and other alpine regions. Present in mountainous areas of central and southern Europe. Global distribution centered on European alpine systems.
Similar Taxa
- Plebejus argusOverlapping distribution and similar blue coloration; distinguished by preference and detailed wing pattern
- Agriades optileteFormerly classified in same ; similar alpine and appearance
More Details
Taxonomic Note
GBIF records indicate this is currently treated as a synonym of Agriades glandon, reflecting ongoing taxonomic revision in the Polyommatinae. The Plebejus has been split by some authorities, with alpine species transferred to Agriades.