The southern antpipit (Corythopis delalandi) is a species of bird in the family Tyrannidae, the tyrant flycatchers.

[2] The southern antpipit was originally described as Muscicapa delalandi, a member of the Old World flycatcher family Muscicapidae.

It is found in eastern Bolivia's Santa Cruz and Tarija departments, in northern Argentina's Salta, Misiones, and Corrientes provinces, in eastern Paraguay, and in southern Brazil from those countries northeast to southern Maranhão, east to Minas Gerais, and south to northwestern Rio Grande do Sul.

[6] The southern antpipit feeds primarily on arthropods and occasionally includes lizards and frogs in its diet.

It walks slowly on the forest floor and along downed logs, bobbing its head and tail.

[6][7] The southern antpipit's breeding season includes October to December but has not been fully defined.

It has a base of leaf litter, an outer shell of green moss with leaves, and a lining of thin plant fibers.

It is "[r]ather tolerant of disturbed habitats, and found even in small and seriously degraded forest fragments".