Lioponera clarki

Brown (1975) - In Australia, a raid of L. clarki was observed in 1951 in open eucalypt woodland at Berrimah, near Darwin, Northern Territory, over bare soil against a nest of a small Iridomyrmex in bright morning sunlight. This raid was very loose and involved only 3 or 4 Lioponera workers while I watched it, so it may have been the final stages of an action begun much earlier.

Identification
Heterick (2009) - Lioponera clarki is distinguished by the lack of a dorsolateral cephalic carina curving towards the eye, lack of ocelli and a wide node with posterior angles that in dorsal view extend laterally beyond its anterior margin.

Distribution
Heterick (2009) - A predominantly sand-plain species that is also found in the NT and drier areas of south-eastern Australia.

Distribution based on Regional Taxon Lists
Australasian Region: Australia.

Nomenclature

 *  clarki. Phyracaces clarki Crawley, 1922b: 433 (w.) AUSTRALIA.
 * Combination in Cerapachys: Brown, 1975: 22.
 * Combination in Lioponera: Borowiec, M.L. 2016: 163.
 * Status as species: Brown, 1975: 22, 66; Taylor & Brown, 1985: 24; Bolton, 1995b: 142; Heterick, 2009: 128.
 * Senior synonym of castaneus: Brown, 1975: 22; Taylor & Brown, 1985: 24.
 * castaneus. Phyracaces castaneus Clark, 1924b: 79, pl. 7, figs. 7-14 (w.q.m.) AUSTRALIA.
 * Junior synonym of clarki: Brown, 1975: 22.

References based on Global Ant Biodiversity Informatics

 * Heterick B. E., B. Durrant, and N. R. Gunawardene. 2010. The ant fauna of the Pilbara Bioregion, Western Australia. Records of the Western Australian Museum, Supplement 78: 157-167.