On the bugguide.net page for Family Polleniidae, it says
Two genera in our area: (2)
- Pollenia, introduced from the Old World, with 7 known species in the Nearctic. Widespread.
- Melanodexia, a native genus with 9 species. Western.
Neither bugguide nor iNat have any pages for Melanodexia that I can find. Does anyone know why? What am I missing?