biostudies-literatureUnknown1123Kaltenbach TMaterial collected in 2018 in Cambodia gives us first insights into the diversity of <i>Labiobaetis</i> Novikova & Kluge, 1987 in this country. No species has been reported so far. We identified two new species using a combination of morphology and genetic distance (COI, Kimura 2-parameter). They are described and illustrated based on their larvae. A key to all <i>Labiobaetis</i> species of continental Southeast Asia is provided. The interspecific K2P distance between the two new species is 20-21%, the intraspecific distance of one of them is 1%. The total number of <i>Labiobaetis</i> species worldwide is augmented to 156.ZooKeys63-81https://www.ebi.ac.uk/biostudies/studies/S-EPMC9836613biostudies-literatureFirst contribution to <i>Labiobaetis</i> Novikova & Kluge in Cambodia (Ephemeroptera, Baetidae), with description of two new species.PMC9836613Garces JGattolliat JLKaltenbach TfalseFirst contribution to <i>Labiobaetis</i> Novikova & Kluge in Cambodia (Ephemeroptera, Baetidae), with description of two new species.Material collected in 2018 in Cambodia gives us first insights into the diversity of <i>Labiobaetis</i> Novikova & Kluge, 1987 in this country. No species has been reported so far. We identified two new species using a combination of morphology and genetic distance (COI, Kimura 2-parameter). They are described and illustrated based on their larvae. A key to all <i>Labiobaetis</i> species of continental Southeast Asia is provided. The interspecific K2P distance between the two new species is 20-21%, the intraspecific distance of one of them is 1%. The total number of <i>Labiobaetis</i> species worldwide is augmented to 156.2022-01-01T00:00:00Z20222025-04-18T21:16:09.651Z2025-04-07T09:16:00.289ZS-EPMC98366133676203910.3897/zookeys.1123.90308