<< Previous Next >>

Plebejus argus

Plebejus argus
Photo Information
Copyright: Ingrid Ugussi (Skye) Silver Workshop Editor/Silver Note Writer [C: 1 W: 0 N: 15] (72)
Genre: Animals
Medium: Color
Date Taken: 2009-05-09
Categories: Insects
Exposure: f/6.7, 1/250 seconds
More Photo Info: [view]
Photo Version: Original Version
Date Submitted: 2015-12-01 5:04
Viewed: 1326
Points: 6
[Note Guidelines] Photographer's Note
More pictures can be seen on my blog: http://gardensofnature.org/

Species: Plebejus argus (Linnaeus, 1758)
Family: Lycaenidae

Common names
English: Silver-studded Blue
Italian: Argo
German: Geißklee-Bläuling
Croatian: Argus

Widespread and locally common across Europe, Asia and as far as Japan, however threatened due to habitat reduction in the UK.

In males the upperside is iridescent blue with a black border and a white fringe at the edges, females are brown, with orange spots at the edges. Undersides brown-grey with a row of orange and black spots at the margin. Silvery blue-green metallic spot, present on the ventral hind wings, are distinctive for this species.
It can easily be mistaken for the near identical Plebejus idas (Idas Blue), however the two species can be reliably distinguished only by looking the male fore-tibia, which presents a spine only in Plebejus argus.

Wide variety of food plants: Calluna, Erica, Lotus, Tymus, Ulex, Cytisus, Genista, Coronilla, Galega, Hippocrepis, Cistaceae, Helianthemum, Ericaceae, Colutea, Astragalus, Ononis etc.
Habitat: diverse, from very damp to very dry conditions. In Istria present on dry grasslands and garrigue.

Eggs are laid on young shoots or on the stems of one of the feeding plants, sometimes on the ground but always near the ant's nests. The larvae develops within the eggs and, if laid in late summer, it can overwinter and hatch in next spring, late March or early April, depending on the latitude. In Istria observed since early May.

• Interacts with ants in the larval stages: pupation often taking place in the ant´s nest where they are protected from enemies; in exchange they secrete the honeydew-like liquid which is delicious for ants (mutualism).
• It is always associated with Lasius ants and emerging adults are attractive to Lasius workers, a very unusual behaviour because they are normally attacked or ignored by them.

D. Jordano and C.D. Thomas. Specificity of an ant-lycaenid interaction. Oecologia (1992) 91 : 431-438
T. Tolman and R. Lewington. Collins Butterfly Guide. Collins. 2008

iti has marked this note useful
Only registered TrekNature members may rate photo notes.
Add Critique [Critiquing Guidelines] 
Only registered TrekNature members may write critiques.
ThreadThread Starter Messages Updated
To iti: wrong namedryas 1 12-02 00:07
You must be logged in to start a discussion.

Critiques [Translate]

  • Great 
  • iti Gold Star Critiquer/Gold Note Writer [C: 577 W: 0 N: 650] (7939)
  • [2015-12-01 9:59]
  • [+]

Hi Yves,
Nice butterfly in nice colored. Very good composition and details.
Excellent green background. But why so small image?
Regards Jiri.

A beautiful sharp picture ,good compo and BG,but a little to small Ingrid.
Try a bigger, 800 is the max limit.

Thanks for sharing.


  • Great 
  • lousat Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 6595 W: 89 N: 15659] (65489)
  • [2015-12-02 9:12]

HI Ingrid,some problem in the resizing process but the pic is still very good,beautiful blue and excellent details,i like it! have a nice evening and thanks,Luciano

  • Great 
  • tuslaw Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 2754 W: 282 N: 4931] (19883)
  • [2015-12-02 19:17]

Hello Ingrid,
A wonderful shot of this pretty little Blue. Sharply focused and displaying vivid yet natural colors. I like it's downward pose and the fact that it's wings are fully extended. Nice clean BG. Format is a little small, but I'm sure you had your reason.
By the way....I liked your blog!!

Calibration Check