A new species of Indoganodes Selvakumar, Sivaramakrishnan & Jacobus, 2014 (Ephemeroptera, Teloganodidae) from Sri Lanka.

A new species, Indoganodes tschertoprudi sp. nov. is described from Sri Lanka. The genus Indoganodes Selvakumar, Sivaramakrishnan & Jacobus, 2014 was previously known only by one species from the Western Ghats (India). The new species differs from Indoganodes jobini Selvakumar, Sivaramakrishnan & Jacobus, 2014 by the number of denticles on the claws, shape of the femora, shape of the chalazae on the femora, absence of any median tubercles on the terga, and presence of posterolateral processes only on segments VI-IX. The diagnosis of Indoganodes is also emended. Morphological larval affinities of Indoganodes and Ephemerellina Lestage, 1924 and the probable origin and diversification of I. tschertoprudi sp. nov. are discussed.