Polyrhachis (Myrmhopla) saevissima Smith, 1860

Material examined. Upper Peirce Reservoir, 10 Jan 2014, Sk. Yamane leg., SG14-SKY-46, ZRC _HYM_0000423; Pulau Ubin, PU 3, 15-22 Dec 2012, J. Puniamoorthy et al. leg., mangroves, malaise trap, Reg. 29646, ZRC _ BDP0016507; alate queen, Sungei Buloh Wetland Reserve, SB 1, 1°26’46.3”N, 103°43’49.9”E, 12-19 Dec 2012, J. Puniamoorthy et al. leg., mangroves, malaise trap, Reg. 29634, ZRC _ BDP0017223 .

Material not physically examined. Unknown.

Literature. None. New record.

Localities. Pulau Ubin; Sungei Buloh Wetland Reserve; Upper Peirce Reservoir.

Habitat/Ecology. This species is found in primary or mature secondary habitats in Singapore, including mangroves where most occurrences have been reported. In primary or mature secondary forests, nests were found between leaves.

Remarks. At the time of writing, taxonomic validity of P. saevissima is uncertain with broad morphological variation observed between populations. While for the purposes of this checklist we tentatively treat these variants as conspecific, it is possible that these might be proven to be different species with more empirical evidence made available in future.