This leaf beetle is very variable and occurs in a totally light form without any stripes and may even have three transverse dots along the pronotum. This is the darkest form I have seen
This species is alpine and was found at noojee, licola and aberfeldy. Here is a lighter one http://www.projectnoah.org/spottings/111... The image below is even darker. http://www.forestryimages.org/browse/det...