Left isolated premaxilla, dorsal view, ascending process inclined backwards, of: A. Nothobranchius lucius, paratype, male, MRAC A7-02-P-10-25, 43.0 mm SL. B. Nothobranchius insularis sp. n., paratype, male, MRAC A702-P-38-44, 43.7 mm SL. Scale bar = 1 mm.

  Part of: Costa WJEM (2017) Redescription of Nothobranchius lucius and description of a new species from Mafia Island, eastern Tanzania (Cyprinodontiformes, Aplocheilidae). Zoosystematics and Evolution 93(1): 35-44. https://doi.org/10.3897/zse.93.11041