Use our online form.

Use our online form.
Butterfly Conservation Warwickshire - Branch Logo featuring the White-letter Hairstreak butterfly.Butterfly Conservation.

Butterflies - Brown Argus (Aricia agestis)

The brown Argus and female Common Blue are very similar in appearance. The Brown Argus lacks the two extra spots on the underside of the forewing which are present on the Common Blue.

Flying low to the ground, the Brown Argus has a silvery appearance, frequently stopping to perch or feed on flowers.

The Brown Argus has chocolate brown wings with orange spots near the edge and fringed with white. There is a black spot in the centre of the upper wing. The undersides of the wings are grey/brown with white ringed black spots and orange markings.

The males and females are similar although the sexes can be distinguished by the orange spots. These spots clearly extend to the leading edge of the forewing in the females, while in the males, the spots are very pale or absent at this point.

Brown Argus butterflies will often roost communally in sheltered areas although this species is rarely seen in large numbers... usually only one or two individuals are encountered at a site at any one time.

  • Larval Food Plants
  • Habitat
  • Status
  • Key Sites
  • Links
  • Photographs

Dove's-foot Crane's-bill (Geranium molle)
Common Stork's-bill (Erodium cicutarium)

The Brown Argus larvae may also feed on Cut-leaved Crane's-bill (Geranium dissectum), Meadow Crane's-bill (Geranium pratense), and Hedgerow Crane's-bill (Geranium pyrenaicum).

In Warwickshire, the Brown Argus occurs in small numbers on a range of habitats including woodland clearings, heath land, disused railway lines, road verges, and set-aside fields.

Resident in Warwickshire.

Ashlawn Cutting (WWT Reserve)

Find out more about the Brown Argus online at the following links;

Flight Chart
The flight chart below is based on observations of the adult Brown Argus butterfly in Warwickshire between 2005 and 2008. Peak periods are shown in dark green.

Brown Argus Flight Chart

Distribution Maps

Brown Argus - 2011 records / distribution. Brown Argus - 2010 records / distribution. Brown Argus - 2000 to 2009 records / distribution.
2011 (1yr) 2010 (1yr) 2000-09 (10yr)

Brown ArgusBrown Argus © Steven Cheshire

Annual First Sightings
First sighting dates are based on records of Brown Argus submitted online. Please note that these dates are not updated retrospectively to include records submitted to the branch recorder in other forms.

22/05/2018 Long Itchington Cutting

22/05/2017 Stockton Cutting

24/05/2016 Nr. Studley

15/05/2015 Binton Verge

12/05/2014 Bishops Hill

27/05/2013 Bishops Hill, Bishops Itchington

24/05/2012 Malpass South

25/04/2011 Hillmorton, Rugby / Ryton Wood Mead

17/05/2010 Baddesley Ensor

11/05/2009 Snitterfield Bushes

22/05/2008 Ufton Fields

02/05/2007 Ryton Wood Meadow Reserve

Other Species

Please select an alternative species from the list below.