Black Arches Lymantria monacha
Black Arches is another quite common species in the South of Britain. The species is highly variable and in books you might expect beautiful individuals. In our country though reality is different. Many individuals are plain black with a grey head and a small portion of grey in the upperwings. Reaching a widthspan of over 5 centimeters it is quite big and striking though. Black Arches is on the wing from the end of June to September and the males come to light readily.