The change in airline name being used for the Reconquista (RCQ) flights was a little surprising because the new services to be operated by Avianca Argentina with its new ATR-72-600 fleet had not received the go-ahead yet in early April and the airline was technically not authorized to operate in Argentina yet. However, with the Macair service having operated for several years and with Avianca owning the carrier, there was apparently enough of a "grey area" for Avianca to apply the Avianca Argentina brand to the Macair flights.
The local chamber of commerce in northern Argentina has been promoting the service in social media and even has a website featuring the Avianca Argentina brand and logo:
Macair's Jetstream 32 fleet apparently still consists of at least three aircraft with two of the examples flying in the carrier's colors and titles with one painted with simple wavy lines and sporting a small Macair logo as seen below:
Macair Jetstream 32, LV-ZST (c/n 941), taxiing at Buenos Aires Aeroparque (AEP) on 17Nov16. (Phil Perry Photo)