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  61.015 BROWN ARGUS (Aricia agestis) Denis & Schiffermuller  

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PICTURE: Female butterfly seen on Gibraltar Point, East Lincolnshire, June 2009.

             
 

DISTRIBUTION: This species is a resident in England and Wales, its range extending as least as far north as Yorkshire. It is quite localised seeming to prefer chalk down land, and is probably more common in the south, and south east of England, and also the Cotswolds. It is also present in the Channel Isles.

 

WING SPAN: 25mm to 31mm.                                             STATUS: Resident.

 

FLIGHT PERIOD: This butterfly is double brooded and is on the wing from May to June or early July, and again from late July to early September.

 

LARVAL PERIOD: When mature the caterpillars are up to about 11mm in length, they hatch from pale bluish green, disc shaped eggs. Larvae are green, short and plump, and have the typical wrinkled appearance of other larvae of the lycaenidae family.  Also there is a green to purplish stripe along the back. Pupation takes place on the ground at the base of the food plant.

 

HABITAT: As well as chalk down land the butterfly is found in other situations, and other soil types. Heath land, coastal dunes, woodland clearings and disused railway lines are some examples.

FOOD PLANT/S: The more usual food plant for the caterpillars are Common Rock-rose, sometimes other species like Cranes-bill are used. Once, many years ago, in Dovedale I saw, and photographed a female laying eggs on Birds-foot Trefoil.

SIMILAR SPECIES: Northern B

           
               
             
               
             
 

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