1 – At least 11 species and still counting
A group of researchers from Singapore conducted surveys between 2009 and 2010 on local fireflies. They revealed 11 species but the number did not include the two species that were previously described from Singapore: Lucidina wallacei Pic, 1944 and Pteroptyx bearni Olivier, 1909 [see point 5].
2 – New but not new
The researchers also revealed four genera as new records for Singapore: Colophotia, Luciola [Luciolinae], Pyrocoelia and Diaphanes [Lampyrinae]. And just recently, The Biodiversity of Singapore portal displayed two interesting species ‘digitally repatriated’ from Natural History Museums in United Kingdom: Colophotia and Pyrocoelia, both were actually collected from Singapore more than a century ago!
But I think the most interesting part is at least half of ‘species’ from the list have no scientific name and are waiting to be determined. Anyone?
3 – Favourite habitats
You can find fireflies in four main habitats in Singapore: mangroves, freshwater swamps, secondary forests and grassland. Most of these habitats are confined in Nature Reserves. So make sure you have a proper permit to conduct your own observation.
4 – Endangered species
Pteroptyx valida Olivier, 1909 is classified as Endangered in The Singapore Red Data Book 2008. It is known as a non-synchronous flashing firefly, and mangrove is its preferred habitat. So once the mangroves disappear this species will be gone forever.
5 – Overlooked or extinct?
Why can’t we find L. wallacei? One possibility is because it is a diurnal species and does not produce light. You may spot this species among other beetles in one of firefly habitats. Identification of this species is not easy though. How about P. bearni? It is obvious that this species has not been recorded from Singapore for a long time. One possibility that I could think of is we have not been looking thoroughly for the species. They might still exist but much less abundant than used to be thus future surveys require good eyes for observations (and funding too). P. bearni is commonly distributed on the east coast of Peninsular Malaysia and Sarawak. The nearest place to spot this species is in Johor – you just need to cross the border! <WFA>