Large Tortoiseshell (Nymphalis polychloros)

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2016 photographs highlighted in green. Click on any photograph to go to an enlarged picture, or simply scroll down the page.

16464_sex?_Var_22Jun09 1559_male_Var_4Jun06 37580_male_Côte-d'Or_12Jun15
19761_sex?_Var_19Apr10 1561_male_Var_4Jun06 41984_male_Savoie_25Jul16

Now extinct, it is generally accepted, in the UK probably principally as a result of the impact of Dutch Elm disease on its larval hostplant, but fortunately not so in France. In fact, 2006 seemed to be a very good year for polychloros and its absence from the UK made it an extra special sight. It overwinters as an adult and hibernating adults emerge very early in March. Second generation polychloros are sometimes seen in Var but this has not been my experience with the Camberwell Beauty (N. antiopa).

It can be differentiated from its cousin the Small Tortoiseshell (Aglais urticae) mainly on size although some urticae seem quite large, but also by the light mark nearest the upf apex which is white in urticae and pale yellow in polychloros. Also the submarginal blue marks seem a lot brighter, especially on the forewing, for urticae than polychloros. It is closely related to antiopa and both overwinter in the warmer climes of Var, polychloros often being so battered it is almost unrecognisable (19761 is perhaps one of the better specimens as they are sometimes almost devoid of scales and transparent).

 

A superb video of the life-cycle of polychloros has been produced by Filming VarWild and can be viewed on YouTube here: www.youtube.com/watch?v=yhrTWN_FXJw

ref sex

observations

alt. m
16464 M

a male, unusually dark it seems to me, certainly compared to 1559. This may have been an altitude effect.

920
1559 M

I'm guessing it's a male based on what I can see of the body shape and the rather territorial pose.

230
37580 M a male, with very striking blue uph marginal marks. It was about to pose nicely for a photograph on roadside gravel but I could hear a lorry approaching in the distance and got this quick snap while I could; this proved necessary as the lorry - clearly in a hurry - caused a whoosh that took the butterfly with it, and although it survived, it did not return to the same spot. 370
19761 F?

this may be a female, based on what seems to be a slightly shorter body length. It has the typically battered appearance of a hibernator.

220
1561 M

the underside of 1559, a distance shot as it settled fairly high in a tree.

230
41984 M a beautiful fresh male, taking salts from the ground and constantly moving and opening and closing its wings, making an open wing shot impossible. 1400

 

16464_sex?_Var_22Jun09

 

1559_male_Var_4Jun06

 

37580_male_Côte-d'Or_12Jun15

 

19761_sex?_Var_19Apr10

 

1561_male_Var_4Jun06

 

41984_male_Savoie_25Jul16