Female and male ants

5979  Hi there,  I was hoping you could help me identify these bugs I found congregating around the deck in our backyard. I live in East York, Ontario and only noticed these yesterday.

These are ants, the black ones are males and the larger brown one is a female. I am unsure as to the species, but at least they do not appear to be carpenter ants. Ed Saugstad, retired entomologist; Sinks Grove, WV.