''Iridomyrmex trigonoceps'' is a species of ant in the genus ''

Iridomyrmex ''Iridomyrmex'' is a genus of ants called rainbow ants (referring to their blue-green iridescent sheen) first described by Austrian entomologist Gustav Mayr in 1862. He placed the genus in the subfamily Dolichoderinae of the family Formicida ...

''. Described by Heterick and Shattuck in 2011, the species is broadly distributed in

Western Australia Western Australia (commonly abbreviated as WA) is a state of Australia occupying the western percent of the land area of Australia excluding external territories. It is bounded by the Indian Ocean to the north and west, the Southern Ocean to th ...

South Australia South Australia (commonly abbreviated as SA) is a state in the southern central part of Australia. It covers some of the most arid parts of the country. With a total land area of , it is the fourth-largest of Australia's states and territories ...

and the

Northern Territory The Northern Territory (commonly abbreviated as NT; formally the Northern Territory of Australia) is an states and territories of Australia, Australian territory in the central and central northern regions of Australia. The Northern Territory ...

, but the species is relatively uncommon.

Etymology

The name is said to be derived from Greek ''trigon'', 'triangular' and Latin ''caput'', 'head', and is in reference to its triangular head. The proper ancient Greek word for "triangular" is however ''trigōnos'' (τρίγωνος).Liddell, H.G. & Scott, R. (1940). ''A Greek-English Lexicon. revised and augmented throughout by Sir Henry Stuart Jones. with the assistance of. Roderick McKenzie.'' Oxford: Clarendon Press.

References

Iridomyrmex Hymenoptera of Australia Insects described in 2011 {{Iridomyrmex-stub