Lanthanomelissa pampicola, sp.n., Lanthanomelissa magaliae, sp.n., Lanthanomelissa betinae. sp.n., and Lanthanomelissa clementis, sp.n. from southern Brazil, and Lanthanella luciane, sp.n. from Argentina are described.
Exomalopsinae; Apoidea; Lanthanomelissa; Lanthanella; taxonomy; Neotropical