Plebejus glandon 

Scope: Global
Language: English

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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Arthropoda Insecta Lepidoptera Lycaenidae

Scientific Name: Plebejus glandon (de Prunner, 1798)
Common Name(s):
English Glandon Blue

Assessment Information [top]

Red List Category & Criteria: Least Concern ver 3.1
Year Published: 2010
Date Assessed: 2009-01-29
Assessor(s): van Swaay, C., Wynhoff, I., Verovnik, R., Wiemers, M., López Munguira, M., Maes, D., Sasic, M., Verstrael, T., Warren, M. & Settele, J.
Reviewer(s): Lewis, O. (Butterfly RLA) & Cuttelod, A. (IUCN Red List Unit)
This species is listed as Least Concern, since it has not been declining by more than 25% in the last ten years, its European extent of occurrence (EOO) is larger than 20,000km² and its population size is probably larger than 10,000 adult individuals.

Geographic Range [top]

Range Description:This species is restricted to the Alps and Pyrenees. Found at altitudes from 1,500-2,700 m. This is a European endemic species.
Countries occurrence:
Andorra; Austria; France; Germany; Italy; Liechtenstein; Spain; Switzerland
Additional data:
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:This species is widespread in the mountainous areas of Europe. Declines in distribution or population size of 6-30% have been reported from Austria (data provided by the national partners of Butterfly Conservation Europe).
Current Population Trend:Stable
Additional data:
Population severely fragmented:No

Habitat and Ecology [top]

Habitat and Ecology:In Central Europe, Glandon Blues are found up to the snow-line on grassy vegetation, where the foodplants grow on open patches, such as on scree slopes and beside streams. On calcareous soils, Androsace chamaejasme is used and on non-calcareous soils, the caterpillars feed on A. obtusifolia and Vitaliana primuliflora. The caterpillars feed on the leaves and sometimes the flowers of the foodplants. The Glandon Blue hibernates as a caterpillar and has one generation a year. Habitats: Alpine and subalpine grasslands (61%), screes (15%), dry calcareous grasslands and steppes (7%), heath and scrub (7%), dry siliceous grasslands (7%).

Use and Trade [top]

Use and Trade: All butterflies are collected to some extent, but only for the extremely rare species it can be a problem and the trade in Europe is generally at a low level compared to other continents. There is no specific trade information for this species.

Threats [top]

Major Threat(s): Although this species shows a decline in a part of its European range, it is not believed to face major threats at the European level.

Conservation Actions [top]

Conservation Actions: This species occurs in a number of protected areas across its range. No specific conservation actions are needed at a European level, but in countries where the species is in decline important habitats should be protected and managed. The effects of conservation actions should be monitored by a Butterfly Monitoring Scheme.

Citation: van Swaay, C., Wynhoff, I., Verovnik, R., Wiemers, M., López Munguira, M., Maes, D., Sasic, M., Verstrael, T., Warren, M. & Settele, J. 2010. Plebejus glandon. The IUCN Red List of Threatened Species 2010: e.T173256A6980937. . Downloaded on 22 October 2017.
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