#6
I would say L sericata - pale basicosta, wide frons, 3 post sutural acr, single ad on t2.
You can use Rognes Blowflies (Diptera, Calliphoridae) of Fennoscandia and Denmark, Fauna Entomologica Scandinavica 1991 or Whitworth Keys to the Genera and Species of Blow Flies (Diptera: Calliphoridae) of America North of Mexico, Proceedings of the Entomological Society of Washington, 2006.
There is a link to Whitworth in this thread:
http://www.dipter...ad_id=8169