Two new species from Grande Terre Island, New Caledonia, namely Fasciamiruspetersorumsp. nov. and Simulacalararasp. nov. are described based on larval morphology and molecular data (COI sequences). Fasciamiruspetersorumsp. nov. is distributed in the southern part of the island and is characterised by a reduced third segment of the labial palps and all abdominal gills divided from the base. The species inhabits slow-flowing aquatic habitats with fine-grained substrate in forest brooks. Simulacalararasp. nov. is known from a single locality in the northern part of the island and is characterised by narrow and distinctly elongated abdominal gills 1-7. It was collected from fine substrates behind stones in riffles with slightly turbulent flow. Both species were recorded only in areas with ultramafic bedrock.

Biology Centre of the Czech Academy of Sciences Institute of Entomology Branišovská 31 37005 České Budějovice Czech Republic Biology Centre of the Czech Academy of Sciences Institute of Entomology České Budějovice Czech Republic

Department of Botany and Zoology Faculty of Science Masaryk University Kotlářská 2 61137 Brno Czech Republic Masaryk University Brno Czech Republic

Department of Ecology and Evolution Biophore University of Lausanne 1015 Lausanne Switzerland University of Lausanne Lausanne Switzerland

Musée cantonal de zoologie Palais de Rumine Place de la Riponne 6 1014 Lausanne Switzerland Museum of Zoology Lausanne Switzerland

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