Odontoponera transversa (Smith, 1857)

Material examined. Queen and workers, Bukit Batok East, 1.34304, 103.76235, Aug-Oct 2016, G.W. Yong leg., pitfall trap, ZRC _ HYM_0001390-1395; Bukit Timah Nature Reserve, 8 Sep 2005, collector unknown, ZRC _ HYM_0000047-50; same locality as previous, near BT07, 1.35499, 103.78167, 19 Jul 2017, W. Wang leg., ZRC _ ENT00047930; same locality as previous, plot III-2, 12 Oct 2015, D.J. Court leg., pitfall trap, ZRC _ ENT00048441; Central Catchment Nature Reserve, Venus Loop, 1.35549, 103.81578, 15 Jun 2015, M.K.L. Wong leg., ZRC _ ENT00000724; Lower Peirce Reservoir, 25Aug 1990, collector unknown, ZRC _ ENT00000117; same locality as previous, Aug 1990, collector unknown, ZRC _ ENT00000155; same locality as previous, 18 Aug 1990, collector unknown, ZRC _ ENT00000170; queens and workers, same locality as previous, 7 Aug 1990, collector unknown, ZRC _ ENT00000197; Mandai, 27 Jun 2019, J. Tan & N. Chin leg., NN-L01, ZRC _ ENT00013537; Mandai Road, Nov-Dec 2016, G.W. Yong leg., ZRC _HYM_0001424-1459; Nee Soon Swamp Forest, 1.38252, 103.80208, 25 Sep 2017, W. Wang leg., Winkler extraction, NS_W1, ZRC _ ENT00027908; Rifle Range Road, 3 Jun 1993, collector unknown, NS110, ZRC _HYM_0000190; male, Seletar Reservoir, 16 May 1994, collector unknown, NS 134B, ZRC _ ENT00000267; Upper Thomson Nature Park, 1.38311, 103.79839, Sep-Oct 2016, G.W. Yong leg., ZRC _HYM_0001397-1423 .

Material not physically examined. Syntype workers, A.R. Wallace leg., SINC.55/9 (BMNH), including CASENT0900666, ANTC19768 (BMNH) [as type of Ponera transversa]. Non-types – CASENT0249126, PSW10256- 1(PSWC); Harbourfront, Marang Trail, 4 Aug 2014, J.K. Wetterer leg., vial #473 (JKWC).

Literature. Type – Smith (1857) [as Ponera transversa]. Viehmeyer(1916); Overbeck (1924); Yamane (2009); Tan & Corlett (2012).

Localities. Bukit Batok East; Bukit Timah Nature Reserve; Bukit Timah Road; Central Catchment Nature Reserve; Harbourfront; Lower Peirce Reservoir; Mandai; Mandai Road; Nee Soon Swamp Forest; Rifle Range Road; Seletar Reservoir; Upper Thomson Nature Park.

Habitat/Ecology. This species was found mostly in primary and old/mature secondary forests in Singapore, including swamp forest, frequently in or on leaf litter. Sometimes, individuals have been collected from well-developed young secondary forest such as abandoned plantation patches. In one instance, foragers were collected from inside an Anoplolepis gracilipes nest in a fallen rotting tree branch.

Remarks. Type locality in Singapore.