These Leptodactylus savagei were calling from a flooded creek bottom in an area between some houses at the edge of a small town.
Two Sabinal Frogs (Leptodactylus melanonotus) calling from a puddle beside the road.
Leptodactylus is a genus of leptodactylid frogs. It includes the species commonly called ditch frogs or white-lipped frogs. It is very similar to Physalaemus, a close relative, and indeed the recently rescribed Leptodactylus lauramiriamae is in some aspects intermediate between them.