Mexico

After the renaming of the Acacias s.l. there are now 5 genera. Four of them are native to Mexico:

Acaciella (formerly Aculeiferum/Filicinae)
Mariosousa
Senegalia (formerly in Aculeiferum)
Vachellia (formerly Acacia s.s.)

Species of Vachellia, Senegalia and Mariosousa:

acatlensis
anisophylla
biaciculata
californica
cedilloi
centralis
collinsii
compacta
cornigera
cookii
coultieri
dolichostachya
durangensis
furcatispina
gaumeri
gentlei
glandulifera
globulifera
hindsii
janzenii
mammifera
mayana
millefolia
reniformis
riparia
russelliana
salazari
sericea
usumacintensis
willardiana also called Palo Blanco

Literature
A systematic treatment of Acacia coultieri and similar species in the new world
Jennifer T.Jawad, David S. Seigler, John E. Ebinger
Ann. Missouri Bot.Gard. 87:528-548.2000.