Diversification and distribution of gall crabs (Brachyura: Cryptochiridae: Opecarcinus) associated with Agariciidae corals

We thank Francesca Benzoni (KAUST) for providing background information on the systematics of the Agariciidae, and Jorn Claassen (RUG) for help with BioGeoBEARS. The fieldwork in Indonesia was organised by Naturalis and the Research Centre for Oceanography (RCO-LIPI), under the umbrella of Ekspedisi Widya Nusantara (E-Win). We are grateful to LIPI and RISTEK for granting research permits. The fieldwork in Malaysia was WWF-Malaysia, Universiti Malaysia Sabah's Borneo Marine Research Institute, and Universiti Malaya's Institute of Biological Sciences, Sabah Parks and funded through WWF-Malaysia, the Ministry of Science, Technology and Innovation (MOSTI) and USAID CTSP (Coral Triangle Support Partnership). The research permits were granted by the Economic Planning Unit, Prime Minister's Department and Sabah Biodiversity Centre. Collecting in New Caledonia was done during the mission CORALCAL 4. Provinces Sud and Nord of New Caledonia provided sampling permits. Loyalty Island samples were collected during the BIBELOT campaign in 2014 onboard RV Alis of IRD at Noumea. Sampling permits were granted by the Loyalty Islands Province, New Caledonia. For the samples from the Maldives, the help of the University of Milano-Bicocca Marine Research and High Education Centre in Magoodhoo, the Ministry of Fisheries and Agriculture, Republic of Maldives, and the community of Magoodhoo, Faafu Atoll is gratefully acknowledged. Fieldwork in the Red Sea was supported by the King Abdullah University of Science and Technology under the Biodiversity in the Saudi ArabianRed Sea program, award number CRG-1-BER-002 to Michael Berumen. Support for the various fieldwork trips by SETM was provided by Van Tienhoven Foundation for International Nature Protection, Stichting Fonds C. Tussenbroek (Nell Ongerboerfonds), Academy Ecology Fund (KNAW), LUF International Study Fund (Leiden University), TREUB-maatschappij, L.B. Holthuisfonds, J.-J. ter Pelkwijkfonds, and A. M. Buitendijkfonds. We are also grateful for the scholarship of TX, provided by the China Scholarship Council (CSC), and NSF DEB 1856245 for funding GP.