reneecatullo 的鑑定

This was two males, one of whom was amplexing the other. The calls were from a few feet away, but I saw one of these toadlets make the same call.
They look like superficially like U. crassa but their calls are more suggestive of U. borealis (which is out of range here). They don't sound like the crassa recordings I can find on Australian Museum Page.

Unfortunately, I can't find any call information on U. arenicola which is found in this area.

I will label this record as arenicola mostly just to try and draw some attention to it?
@reneecatullo - are these just crassa? Can the two species be differentiated by call or range, or anything?