This one i could identify!!! using this forum; but because no one had confirmed that, i put it here; if confirmed is to provide photo/localization to the only specie og the genus that portuguese Naturdata portal has (until now).
Because I've some symphyta larvae, of that same place, i put one, to optimize these entrances; i put the above same name but i doubt it, but maybe someone can identify at least the genus.
Both photographed at Home,Maia, on typical forest of North Portugal: 2013/04/06 - adult; 2014/05/24 - larvae
NOTE: probably it is in fact(?) the same specie; some time ago i did find «Herbivore defense in ferns, Max-Planck Society, (i had fergotten) that this larvae could be the one.
This other larvae photo is from the same place at 16/06/2016.