6. Acknowledgments
This research is supported by the Ministry of Education, Singapore, Tier 1 Research Grant (R154-000-C32-114) as well as the Ah Meng Memorial Conservation fund (R-154-000-B65-720). Specimen collection in Singapore was conducted with the permission of the National Parks Board, under research permit number NP/RP18-034-2. Specimen collection in Malaysia was conducted by Thary Gazi Goh (local scientist) and collections were only carried out in unprotected areas that do not require a state permit for collection. We also thank members of the Reproductive Evolution Lab for assistance and support during this project.