Leptogenys iridescens (Smith, 1857)

Material examined. Bukit Timah Nature Reserve, 1.34772, 103.77766, collector unknown, 30 Nov 2015, ZRC _ ENT00000714 ; same locality as previous, 18 May 1969, D.H. Murphy leg., A24-10, ZRC _HYM_0000672; same locality and collector as previous, 4 October 1973, ZRC _HYM_0000676; same locality and collector as previous, 8 Jun 1967, ZRC _ HYM_0000874; Central Catchment Nature Reserve, MacRitchie, 10 Sep 2011, E.J.Y. Soh leg., ZRC _ ENT00000858; Nee Soon forest, 1.37770, 103.80645, 3 Aug 2017, W.N. Lam leg., NS02_04, ZRC _ ENT00000859; Seletar Trail, 1.3946, 103.80113, 28 Aug 2015, M.K.L. Wong leg., Berlese extraction, ZRC _ ENT00000715 .

Material not physically examined. Unknown.

Literature. None. New record.

Localities. Bukit Timah Nature Reserve; Central Catchment Nature Reserve (MacRitchie); Nee Soon forest; Seletar Trail.

Habitat/Ecology. This species is associated with primary or old/mature secondary forests in Singapore, including swamp forest where individuals were found in the lower pitcher contents of Nepenthes ampullaria . The ants were also collected from leaf litter, and on forest paths or trails.

Remarks. At the time of writing, most examined material in the ZRC were expert-identified to the ‘ L. iridescens complex’ – broad morphological variation was observed between different samples. Some specimens had characters that would more closely confer with L. mutabilis sensu lato (W. Wang 2021, pers. obs.). In the absence of more compelling empirical evidence supporting different species hypotheses, we tentatively treat these variable specimens as conspecific for the purposes of this checklist.