Small Tortoiseshell Aglais urticae

 

Probably Britain’s favourite butterfly, hibernating in our sheds and lofts and even in the cool spare bedroom, to wake in spring and breed, producing a short-lived summer generation that breeds in turn and gives us the autumn butterflies that, if all goes well, we see again next year. 

 

Images L-R:  The sexes are identical; underside; caterpillars on nettles

 

Flight period: Almost any month but most in March to May, June to July and September to October.