Rhopalomastix glabricephala Wang, Yong & Jaitrong, 2018

Material examined. Holotype – Mandai Road, 1.41379, 103.7982, 16 Nov 2016, G.W. Yong & K.H. Pwa leg., GY-SG16-RhoE, ZRC _ ENT00000873; paratypes – same collection data as holotype, ZRC _ HYM_0000508.

Material not physically examined. Unknown.

Literature. Type – Wang et al. (2018c).

Localities. Mandai Road [type]

Habitat/Ecology. The type series was found in mature native-dominated secondary forest, where the ants were nesting in bark of a Tembusu tree. As with other congeners, this species lives in apparent mutualistic association with scale insects ( Diaspididae). The ants consume the waxy protein-rich cuticular secretions of the diaspidids, in exchange the latter gets protection from external elements or enemies.

Remarks. Type locality in Singapore. At the time of writing, this species is known from Singapore only by the type series collected from a single locality.