---

Hi!

I have been having some trouble in telling apart the two genera Vespula and Dolichovespula and the different species inside of each genus.

I'll show you here two different specimens: the specimen from the 1st and 2nd photo was seen by me on 2006/09/23 and the 3rd photo was taken on 2006/08/20 (I don't have a photo showing the face).

Are these two individuals from the same species? How can I tell apart the two genera and the different species?
Thank you

location: Barcelos, Portugal