Robuta

https://pmc.ncbi.nlm.nih.gov/articles/PMC7073655/ Biology of Pseudacteon Decapitating Flies (Diptera: Phoridae) That Parasitize Ants of the... Pseudacteon flies (Diptera: Phoridae) parasitize individual ant workers, causing decapitation of the host during pupariation. Phorid flies that attack South... biologypseudacteondecapitatingflies