Rhopalomastix javana Wheeler, 1929

Material examined. Bukit Timah Nature Reserve, 1.35449, 103.78211, 21 Jun 2017, C. Peeters leg., WW-SG17-015, ZRC _HYM_0001732; Mandai forest, 1.40931, 103.78334, 13 Nov 2018, W. Wang leg., WW-SG18- Rho 3, ZRC _ ENT00007584; Mandai Track, 4 Jan 2017, G.W. Yong leg., GY-SG17-RhoN, ZRC _ HYM_0000576 .

Material not physically examined. Unknown.

Literature. Wang et al. (2018c); Wang et al. (2021).

Localities. Bukit Timah Nature Reserve; Mandai forest; Mandai Track.

Habitat/Ecology. Found mostly in old or mature secondary forests in Singapore, including native-dominated secondary forest. The ants were found nesting in bark of large dipterocarp trees, such as Campnosperma auriculatum (locally-known as ‘ Terentang ’).