Researchers have identified a new species of scarab beetle, Anomala sp. aff. matricula, within the Chek Jawa Wetlands on Pulau Ubin, marking a significant addition to the island’s documented biodiversity. The discovery, which follows surveys conducted between 2018 and 2021, is featured in the National Parks Board (NParks) publication, An Update Of The Biodiversity In Pulau Ubin, which records over 1,300 native fauna species and 550 native flora species.
What findings were revealed in the new biodiversity report?
The NParks publication, launched on June 20, provides a comprehensive record of Pulau Ubin’s natural heritage across 11 taxonomic groups. According to Minister of State for National Development Alvin Tan, the report documents two species new to science, including the spider Piranthus kohi, which was discovered in the island’s secondary forest. The publication also lists 26 fauna species previously unrecorded in Singapore, such as a long-horned beetle, and provides the first national record of Ficus subulata, a shrub found in the island’s secondary forest patches.
Did You Know? The greater club rush, a plant species previously presumed to be nationally extinct in Singapore, was rediscovered on Pulau Ubin in 2023, according to findings cited by Minister Alvin Tan.
Why is the discovery of the scarab beetle significant?
Cheong Loong Fah, an honorary research associate at the Lee Kong Chian Natural History Museum, identified the new scarab beetle after performing a genitalia dissection, a standard procedure used to confirm the species. Cheong noted that beetles serve as essential pollinators and decomposers, playing a critical role in ecosystem health. As insect populations face decline due to climate change, Cheong stated that the discovery underscores the importance of continued research into the specific roles these insects fulfill within various microhabitats.
What is the status of the cryptic painted frog?
Conservation efforts for the vulnerable cryptic painted frog are showing signs of success on Pulau Ubin, where the species is now breeding naturally. Following the introduction of tadpoles and adult frogs from mainland nature reserves between 2024 and 2025, NParks observed the first Ubin-bred frog in October 2025. Surveys conducted in April recorded 31 tadpoles in artificial phytotelm habitats—water-filled cavities in trees or logs—up from 12 in October 2025.
Expert Insight: The successful introduction of the cryptic painted frog serves as a practical gauge for habitat restoration. By monitoring these indicator species, conservationists can better assess if the artificial environments on Pulau Ubin are effectively mimicking the natural rainforest conditions required for long-term population stability.
What may happen next for Pulau Ubin’s conservation?
The documented biodiversity findings are likely to serve as a reference tool for academics and conservationists to guide future protection and rejuvenation efforts. NParks’ group director for conservation, Lim Liang Jim, suggested that the publication may also act as a basis for engaging the public to increase appreciation for local nature. Given the increase in the number of artificial phytotelms, it is possible that further monitoring will show continued population growth for the cryptic painted frog and other species that rely on these specific ecological niches.
Frequently Asked Questions
How was the new scarab beetle identified?
After finding a beetle that appeared unique during three years of surveying, researcher Cheong Loong Fah consulted an expert and performed a genitalia dissection to confirm it was a new species.
What is the scope of the new biodiversity publication?
The publication covers over 1,300 native fauna species and 550 native flora species across 11 taxonomic groups, including birds, spiders, moths, and vascular plants.
Why are artificial phytotelms important for the cryptic painted frog?
These water-filled cavities in trees and rotting logs are used to support the frogs’ breeding, providing necessary habitats for the species as it establishes a population on the island.
How might these findings change the way visitors interact with the natural habitats on Pulau Ubin?
