Below the checklist for San Juan are links to checklists for the other provinces.
San Juan Province is probably underreported, but the climate is very dry. There are some fertile regions around the streams which may host a greater diversity than indicated below.
Many thanks also to Ezequiel Bustos who has sent me (July, 2017) an addition for San Juan, based on his tireless research into Argentina Sphingidae ranges.
M. d. mesosa WO?
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Species from Valverde 1999
not in book