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Possibly Gonia pallens Wiedemann. It is not crassicornis or lineata.

I do not have modern literature for South America. I found this species in Aldrich's 1934 review of temperate South American Tachinidae. It is widespread to the north as well. If you have the regional catalog you can check if more species have been described:

Guimarães, J. H. 1971. Family Tachinidae (Larvaevoridae). A catalogue of the Diptera of the Americas south of the United States. São Paulo: Vol. 104, 333 pp.