A rarely seen blackish blue / purple celyphid fly found in lowland rainforest. It is relatively larger than other species of celyphids, about 8 mm in body length. The scutellum is very convex and shiny, covering the entire abdomen. Identified to be of genus Paracelyphus, likely Paracelyphus hyacinthus by Dr. Stephen Gaimari.
The one below seems to be an immature.
These mimic blue leaf beetle.
An egg of the beetle fly: