Based on the examination of the holotypes of the 3 taxa and on fresh material from Kenya, these appear conspeciftc. Consequently, N. cataractae and N. immisericors are placed in synonymy of N. lecythus.

Odonatologica

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Societas Internationalis Odonatologica

V. Clausnitzer. (2003). The synonymy of the East African Notogomphus cataractae Consiglio, 1978 and N. immisericors Campion, 1923 with N. lecythus Campion, 1923 (Anisoptera: Gomphidae). Odonatologica, 32(1), 85–87.