According to a small blurb in the CRC, Bussingius is considered a synonym for Amatitlania.
And in 2007 was considered a synonym for Cryptoheros.
I acquired access to the CRC thru my membership in the American Cichlid Association.
Beside the CRC access with ACA membership, there is the on -line quarterly journal called the Bunbarsche bulletin, and access to a list of available cichlids from breeders, and other info.
Looks like this below
Central America
Sell: Parachromis dovii
Sell: Parachromis dovii
...
Sell: Parachromis managuensis
Sell: Parachromis managuensis
South America
Sell: Crenicichla lenticulata
Sell: Crenicichla lenticulata
...
Sell: Hoplarchus psittacus
Sell: Hoplarchus psittacus
...
Sell: Hypselecara coryphaenoides
Sell: Hypselecara coryphaenoides
Africa
Sell: Heterotilapia buttikoferi
Sell: Heterotilapia buttikoferi
...
Sell: Oreochromis mossambicus
Sell: Oreochromis mossambicusI've been a member about 30 years, way back when the BB was a magazine published on paper.