Male fly called "March Fly" or "Lovebug" in the USA. (Both unsuitable names here). Previously classified in the family Bibionidae but now segregated into the family Pleciidae. Probably Plecia dimidiata as this is the only one on the ALA in Victoria. Males have large heads and eyes.
Leaves fleshy, distinctly ribbed on the outside. Apex of mid-lobe of column (yellow part) somewhat dorsally compressed with a V-notch. Lateral lobes of column with a terminal tuft of white hairs, extending horizontally and converging. More than 5 flowers per stem (I can count 7 or 8 including the buds).
High resolution copy for first photo (habit). See "original" resolution.
Note: Many plants in this area - all with white or very pale pink flowers instead of the more common deep pink to magenta colour.
In my experience, Caladenia moschata can have a quite strongly vertically compressed dorsal sepal similar to C. cucullata but the second half of the labellum is not completely purple as in C. cucullata. I find that the detection of a strong musky scent is not a reliable feature.
Note the frilly margin of the labellum which is square and notched at the apex.(Distinguishes it from Microtis parviflora which has a non-frilly labellum that tapers to a point without the notch - triangular-shaped.)
Update: Close-up photos showing labellum detail added.
Note the variation in the shape/notching of the labellum. Some flowers only have minute notching on a square-ended labellum. Others have two rounded lobes with one shallow notch between them **but there is no gap or "decurved point" between the lobes**.
That makes it M. unifolia, I think, even though a proportion of the flowers have a bilobed labellum.
Looking at photos elsewhere, it seems that the id feature "labellum pendulous - not pressed against ovary" can be seen in both arenaria and unifolia.