Scientific Name: Aricia agestis (syn. Plebeius agestis).
English Name: Brown Argus.
French Name: Le Collier-de-corail (='the coral necklace') or l'Argus brun (='the brown argus').
5 Key Characters:
Habitat: Unimproved, dry grassland, open woodland and fringes. On very hot days they rest on long grass stems in the shade.
Flight Period: April-May-June-July-August-September-October.
Caterpillar: small, green with a red and white stripe down the side. June to April, overwintering as a caterpillar in leaf litter.
Host Plant: Geraniums (Cut-leafed Cranesbill Geranium dissectum, Dovesfoot Cranesbill G. molle, Round-leafed Cranesbill G. rotundifolium, G. purpureum, Common Storksbill Erodium cicutarium), Rockroses (Common Rockrose Helianthemum nummularium, White Rockrose H. apenninum) and Birdsfoot Trefoil Lotus corniculatus.
Status: Very common. Widely distributed and quite abundant. This is a conspicuous and easy to see butterfly in the Touraine Loire Valley and Brenne.
Photographed by Loire Valley Nature:
Photographs numbered from left to right, and top to bottom. All photos will enlarge in a new window if you click on them. 1 female on Daisy Bellis perennis in our orchard, April. 2 - 5 two slightly confused male Common Blues Polyommatus icarus tentatively attending a similarly responsive Brown Argus Aricia agestis female on Common Birdsfoot Trefoil Lotus corniculatus in our orchard, May.
English Name: Brown Argus.
French Name: Le Collier-de-corail (='the coral necklace') or l'Argus brun (='the brown argus').
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEie3Juo2nITzJZebZfR_G_HuBFfTRR_lpxYMzu8PSI4Kmnwzec655-cgrpRd1ahvuBKqVLsNG4-vbgJKOmiS-pajUJ06OxKN5ktWXz1CYx-wLrZzsISuXpHje2BMIPQAaZjnocHYPvmycU/s400/brown_argus.jpg)
- a band of orangey red crescents close to the outer edge of each wing.
- small (forewings 12 -15 mm).
- upperside brown.
- a black spot in the middle of the upperside forewing.
- undersides grey or brown with spots.
Habitat: Unimproved, dry grassland, open woodland and fringes. On very hot days they rest on long grass stems in the shade.
Flight Period: April-May-June-July-August-September-October.
Caterpillar: small, green with a red and white stripe down the side. June to April, overwintering as a caterpillar in leaf litter.
Host Plant: Geraniums (Cut-leafed Cranesbill Geranium dissectum, Dovesfoot Cranesbill G. molle, Round-leafed Cranesbill G. rotundifolium, G. purpureum, Common Storksbill Erodium cicutarium), Rockroses (Common Rockrose Helianthemum nummularium, White Rockrose H. apenninum) and Birdsfoot Trefoil Lotus corniculatus.
Status: Very common. Widely distributed and quite abundant. This is a conspicuous and easy to see butterfly in the Touraine Loire Valley and Brenne.
Photographed by Loire Valley Nature:
Photographs numbered from left to right, and top to bottom. All photos will enlarge in a new window if you click on them. 1 female on Daisy Bellis perennis in our orchard, April. 2 - 5 two slightly confused male Common Blues Polyommatus icarus tentatively attending a similarly responsive Brown Argus Aricia agestis female on Common Birdsfoot Trefoil Lotus corniculatus in our orchard, May.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhWlGQYSq1m27jV0aovuTzmF-KDRIoG1ba4SHXNLEQNMJbfQs1SbVEGAKaqRlGyrXrpO9Cv4wLXgVJvz_NyqTAq1xdTX0GEFp8y1ZrZDemjiEQYhPCrl9XBrRRasqAmfAMlU7KjdTZOdf0/s1600/Brown_Argus.jpg)
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhX_lIMKgelyCqCUk2aKNsBBwcD2X3UGs4vgoM2ZsCovuqm3JGtRi44qLCVnLG1kUb8Auky9FeQqgpX6ZFbr2AFySIrqL-5OLj_46-atRqy3kH_fkBuBYQDDecVDDsYlu2_wi9UcEwXxOI/s1600/Common_blue6.jpg)
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhWpl5O3_u5x1um5o0uQkh7j2LXfpxy34TqK4yFVZjeGGN-QCqkmpCeq6oivKp0bwfFmP8OPLSyUOR-beNNKHr-8bbbMWf_sEs8ZGGy4cgmxB7R9A-F7ALe_CgGvFpe-G5DxUnTOVHycfc/s1600/Common_blue4.jpg)
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgABFrD84AcbCIlUstdL79enSRD_GhJCS-_V3BZx2y0ud0UdnnDIgPHLJIBd_PZcPyRp21hSHgEypzUJTqZLPan3XJc_HI6e6pXhj_A1dwvNJKyfGpu4Ekk-b37crwKrmOmrjrfgba9Nd0/s1600/Common_blue2.jpg)
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhYAOy5g6dCHhwlMXOFL2zi4WquLrJFk8rEDShuSKGzcl_QhMkaUVTp1vf5qXsni60D-SeJVBa24R7D1vNwO8-zL4h9DRU2G1LWfvDvRjBtBGq_dwG8ylOca64IMazEPTC50fylE-fdyC0/s1600/Common_blue5.jpg)
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On Yorkshire Fog Holcus lanatus. |
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