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September 10, 2025

Descriptions of mature larvae of the genera Austrelmis and Macrelmis (Coleoptera: Elmidae) from Argentina

Puntos clave

Descriptions of mature larvae for three species reveal significant characteristics.
Two species of Austrelmis and one of Macrelmis are presented for the first time.
Comparative analysis with other larvae from the same genera highlights distinguishing features.
Information on habitat and distribution adds context to the environmental preferences of the species.

Resumen

Mature larvae of two species from the genus Austrelmis Brown, 1984 and one species from the genus Macrelmis Motschulsky, 1860 are described and illustrated for the first time: A. argentinensis Manzo et Archangelsky, 2015, A. tafi Manzo et Archangelsky, 2015, and M. aequalis (Hinton, 1937). A comparison of the larvae of these species with the described larvae of other species from their respective genera is provided. Additionally, information on the habitat and distribution of the examined species is included.

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