Ectomomyrmex overbecki (Viehmeyer, 1916)

Material examined. Queen, locality unknown, 1994, collector unknown, NS 136A, ZRC _ ENT00000277 ; Pulau Ubin (OBS area), 28 May 2019, W. Wang leg., ZRC _ ENT00007921 ; Mandai Road, 1.40869, 103.80138, 19-21 Dec 2016, G.W. Yong et al. leg., M1D3GPc20149, ZRC _ ENT00047847

Material not physically examined. Types – CASENT0915272, ANTC40433 (NHMB); FOCOL0958-961 (ZMHB). Non-type – FOCOL0364 (DEIC) [as cotype of unpublished ‘ Bothroponera helleri ’] .

Literature. Type – Viehmeyer (1916); Overbeck (1924) [both as Pachycondyla (Ectomomyrmex) overbecki].

Localities. Bukit Timah Road [type]; Mandai Road; Pulau Ubin.

Habitat/Ecology. The type series of this species was found nesting between the roots of a tree in loose earth in a garden. Individuals were also collected from disturbed native-dominated secondary forest, on one occasion in a rotting log on the ground.

Remarks. Type locality in Singapore.