BUTTERFLIES

Thanks! But yes, I have taken shots of that species before and put online, and never was able to find an english name anywhere in spite of it being comperably common in the high elevations of the alps. With insects living in limited parts of continental europe this is sometimes the case, alas, even if they are distinctive and good looking. :o(

An odd name, and missleading on the range, the german one. It occures allegedly in smal populations in the Sudet Mountains and also in the Vosques and Swiss Jura as very local enclaves on certain ridges, but by far more common it's in the Alps close to the tree line. Either this was different long ago or it was first described from the Sudet Mountains or something like this.

Anyway, there is no official english name to find, and to just straight translate the binominal or the german name to get one made up for a place on the webis hardly a great idea, would probaply just add to the general mess. ;o)

Geometridae are just a fraction of the moths. The ones that walk as caterpillars hairless and with the back arched... In German they are "Spanner", so share a name with -- well -- among other stuff attached cafe curtains, shoe trees, tension wrenches and voyeurs! So woe the poor moth translated by the owner of the wrong dictionary! ;o)

Here you go, a nice online dictionary page on lots of spanners, listing amongst assorted tools and peeping toms also a huge list of different well established translated geometer moths with different names, often called plain moth, but also very varried ones like carpet, rivulet, pug, weave, border.....
http://www.dict.cc/german-english/Spanner.html