Acropyga acutiventris Roger, 1862

Material examined. Bukit Timah Nature Reserve, near BT08, 31 May 2017, W. Wang leg., WW-SG17-025, ZRC _ ENT00000971 ; Central Catchment Nature Reserve, 16 Feb 2016, G.W.J. Yong leg., ZRC _HYM_0000996; Prince George’s Park Residences (National University of Singapore), 1.29239, 103.77869, 24 Mar – 1 Apr 2015, M.S. Foo & W. Wang leg., malaise trap, NUS0001, ZRC _ BDP0044267 ; Mandai Lake Road, Northern Node buffer area (Rainforest Park), MIS_ L02_LL, 1°24’36.5”N, 103°47’04.0”, 53 m a.s.l., 18 Jul 2019, J.S. Tan & N.L. Chin leg., Winkler extraction, ZRC _ ENT00028297 ; same locality as previous, 8 Sep 2020, N. Chin, L. Tan & C. Goh leg., NCTG_MIS_022, ZRC _ ENT00047801 .

Material not physically examined. ANIC 32-018494, Shattuck1345243946 (ANIC); ANIC 32-018649, Shat - tuck1345244635/1345244638/1345244641 (ANIC).

Literature. LaPolla (2004).

Localities. Bukit Timah Nature Reserve; Central Catchment Nature Reserve; Mandai Lake Road; Prince George’s Park Residences (NUS); Singapore Botanic Gardens.

Habitat/Ecology. Usually associated with primary and/or secondary forests at varying levels of disturbance in Singapore, including back mangrove forest, and disturbed but well-developed secondary forest fragments in urban or semi-urban settings (e.g. parkland). Nests were found in soil, soil mounds or rotten trunks and logs; individuals were often found at high densities from leaf litter and top soil, also under wood.