Proatta butteli Forel, 1912

Material examined. Bukit Timah Nature Reserve, 8 Dec 1995, H.K. Lua et al. leg., NS 208A, ZRC _ ENT00000362; same locality as previous, 6 Jul 2015, J. Koh leg., ZRC _ ENT00000890; Lower Peirce Reservoir Road, 28 Jul 1990, H.K. Lua leg., LHK 108, ZRC _ ENT00000403; MacRitchie Reservoir, 9 Jan 2014, Sk. Yamane leg., ZRC _ HYM_0000425-426; Mandai Road, 1.41258, 103.79839, 16-18 Nov 2016, G.W. Yong leg., ZRC _HYM_0001629-1632; Nee Soon forest, 16 Aug 2017, W. Wang leg., ZRC _ ENT00047966; male, Prince George’s Park Residences (NUS), 1.29239, 103.77869, 29 Apr-6 May 2015, M.S. Foo & W. Wang leg., malaise trap, NUS0021, ZRC _ BDP0041414; Pulau Ubin, 1.40822, 103.97051, 15 Oct 2016, G.W. Yong et al. leg., ZRC _HYM_0001074; same locality as previous, 1.41662, 103.99443, 4 Dec 2016, G.W. Yong & M.K.L. Wong leg., ZRC _HYM_0001075; Seletar Reservoir Park, 17 Mar 1998, C.M. Yang leg., ZRC _HYM_0000267; Upper Thomson Nature Park, 1.38311, 103.79839, Sep-Oct 2016, G.W. Yong leg., ZRC _HYM_0001626-1628 .

Material not physically examined. Non-types, CASENT0178527, ANTC8736 (MCZ); Harbourfront, Marang Trail, 4 Aug 2014, vial #472 (JKWC) .

Literature. Viehmeyer (1916); Overbeck (1924); Weber (1958); Moffett (1986); Wheeler & Wheeler (1986); Tan & Corlett (2012).

Localities. Singapore Botanic Gardens; Bukit Timah Nature Reserve; Bukit Timah Road; Harbourfront; Lower Peirce Reservoir Road; MacRitchie Reservoir; Mandai Road; Nee Soon; Prince George’s Park Residence (NUS); Pulau Ubin; Seletar Reservoir Park; Upper Thomson Nature Park.

Habitat/Ecology. This species was found mainly in old/mature or young secondary forests in Singapore, including abandoned plantation and native-dominated secondary forests, and sometimes in semi-urban parklands or gardens. These ants were collected from bamboo shoots, soil, leaf litter, even decaying logs.