Bee Fly, Ligyra punctipennis, with a white bum. Mount Jerusalem National Park, Koonyum Range, NSW, Australia, December 2014.
This is similar in appearance to Ligyra bombyliformis.
However, from what I can see, in Ligyra punctipennis...
Abdomen has first tergite black with yellow lateral hairs
Second tergite wholly covered in yellow hairs
Third and Fourth tergites with black hairs and scales.
Tergites 5-7 have white scales and black hairs. (To me the fifth tergite is silvery black.)
The black cross-bands on the third and fourth tergites separate this species from others.
The wings are yellowish brown close to the body and nearly hyaline away from the body towards the trailing edge. There are 9 small distinct dark spots at vein crossing points. There are 4 submarginal cells. The first posterior cell is open, its veins do not meet before the wing edge.
to share – to copy, distribute and transmit the work
to remix – to adapt the work
Under the following conditions:
attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
https://creativecommons.org/licenses/by/2.0CC BY 2.0 Creative Commons Attribution 2.0 truetrue