The green headed ant( lat Rhytidoponera metallica)
The green-headed ant (lat. Rhytidoponera metallica) is a species of small tropical ants of the genus Rhytidoponera from the subfamily Ectatomminae. Despite their size (body length from 5 to 7 mm), they have a strong sting, the venom of which can cause anaphylactic shock in humans. The insect's name refers to its unusual metallic, shiny blue-green color with shades ranging from greenish to bronze-violet, similar to that of wasps. They can serve as a biological pest control agent by killing agricultural pests. Endemic to Australia, introduced to New Zealand.