There's a new push coming in Perth from those who would like to see only Australian natives (and preferably local ones) used as street trees.
This is a mistake.
The reasons why it is a mistake are outlined in various places on this blog.
No one else around the world advocates this approach any more. It carries too much risk apart from anything else.
Local government Parks and Gardens managers will have to be firm to resist the push however as the voices of those who advocate this approach are very persistent.
The fact is there are many more factors involved in choosing street trees than simply support of local fauna.
Unfortunately some refuse to recognise that.