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I spent Christmas this year down under - at 35 C a rather unchristmaslike experience! Luckily, nature compsensated for this. Here's a Bombyliidae from my first day. I'm familiar with black in this family, not orange! (3 out of four Tabanids had also fully orange abdomens - what makes orange so special here?)

The shape of hte head is also unexpected for me; the head normally does not extend that far behind the eyes (in my limited experience).

So what can be said about this fly? Subfamily/tribe level perhaps? Or even genus??

Habitat: open place in woodland, near flood plain.

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Looks very like Petrorossia, however the tribe Xeramoebini is represented in Australia by only two undescribed species of Petrorossia (Lambkin et.al. 2003) so it is presumably one of these.