Images 1, 2 and 3 are B. umbrinus. Image 4 looks more like the B. sp. aff. montanus. I wonder if they could be B. melagramma, which is very common in Vic.
Yeah, I wonder about B. melagramma also. Tobias was going to come out to sample the Tralee ones, but we've not been able to find a day yet, and they're getting close to finished.