ZooKeys 1002: 1–114 (2020) A peer-reviewed open-access journal doi: 10.3897/zookeys.1002.58017 RESEARCH ARTICLE https://zookeys.pensoft.net Launched to accelerate biodiversity research The success story of Labiobaetis Novikova & Kluge in the Philippines (Ephemeroptera, Baetidae), with description of 18 new species Thomas Kaltenbach1,2, Jhoana M. Garces3, Jean-Luc Gattolliat1,2 1 Museum of Zoology, Palais de Rumine, Place Riponne 6, CH-1005 Lausanne, Switzerland 2 University of Lausanne (UNIL), Department of Ecology and Evolution, CH-1015 Lausanne, Switzerland 3 Depart- ment of Biology, School of Science and Engineering, Ateneo de Manila University, Quezon City, 1108 Metro Manila, Philippines Corresponding author: Thomas Kaltenbach (
[email protected]) Academic editor: L. Pereira-da-Conceicoa | Received 26 August 2020 | Accepted 16 October 2020 | Published 10 December 2020 http://zoobank.org/C9EAF9DC-D87D-402F-AC35-CC4983D2E142 Citation: Kaltenbach T, Garces JM, Gattolliat J-L (2020) The success story of Labiobaetis Novikova & Kluge in the Philippines (Ephemeroptera, Baetidae), with description of 18 new species. ZooKeys 1002: 1–114. https://doi. org/10.3897/zookeys.1002.58017 Abstract Material collected between 1994 and 2020 in the Philippines, covering most main islands like Luzon, Mindoro, Palawan, Negros, Cebu, Leyte, and Mindanao and some smaller islands, substantially increased our knowledge of Labiobaetis Novikova & Kluge in this archipelago. Only three species were previously reported: L. molawinensis (Müller-Liebenau, 1982) and L. sumigarensis (Müller-Liebenau, 1982) from larvae and L. boettgeri (Ulmer, 1924) from adults. Eighteen new species have been identified using a combination of morphology and genetic distance (COI, Kimura 2-parameter). They are described and illustrated based on their larvae and a key to all species in the Philippines is provided.