Reverdin's Blue (Plebejus argyrognomon)
Species

Male. Taken in the Vercors NP, France, on July 21st 2018.
(1/200th sec at f14. Approx 3x lifesize. © David Hastings)

Male underside. Taken at Pont en Royans, France, on July 21st 2018.
(1/160th sec at f13. Approx 3x lifesize. © David Hastings)

Female. Taken at Goranje Taboriste, Croatia on June 5th 2017.
(1/200th sec at f13. Approx 3x lifesize. © David Hastings)

Female underside. Taken at Goranje Taboriste, Croatia on June 5th 2017.
(1/250th sec at f13. Approx 3x lifesize. © David Hastings)

Description

Wing span: 28 - 34 mm

A small blue, similar to Silver-studded and Idas. The underside is grey with an orange band on both wings. The underside marginal spots have shiny blue centres.

It is patchily distributed in southern and central Europe.

It is found in grassy meadows and abandoned fields with scrub.

There are two broods, the first in May - June, and the second in July - August.

The main larval foodplant is Coronilla varia. Larvae are attended by several species of ant.

Sightings

21-Jul-2018 : Vercors Natural Park, France

07-Jun-2017 : Veliki Crnopac, Croatia
06-Jun-2017 : Irinovac, Croatia
05-Jun-2017 : Goranje Taboriste, Croatia
25-Jul-2015 : Nr Dobrinishte, Bulgaria