---

You should read McAlpine's review of Australian Platystomatidae, but you may find that nobody alive knows for sure what the difference is. "The type species, E. metallica Bigot, is unknown to me (as it was to Hendel), but Hendel and all subsequent authors have interpreted Elassogaster, possibly correctly, as the generic concept that includes the well known E. linearis (Walker) (syn. Dacus sepsoides Walker) and some closely related African and Oriental species."

McAlpine, D. K. 2001. Review of the Australian genera of signal flies (Diptera: Platystomatidae). Records of the Australian Museum 54:113-199