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The green-head ant (Rhytidoponera metallica) is a species of ant that is endemic to Australia. It was described by British entomologist Frederick Smith in 1858 as a member of the genus Rhytidoponera in the subfamily Ectatomminae. These ants measure between 5 and 7 mm (0.20 and 0.28 in).
In Perth, M. gratiosa was responsible for most cases of anaphylaxis due to ant stings, while M nigriscapa and M. ludlowi were responsible for two cases. [258] The green-head ant (Rhytidoponera metallica) was the only ant other than Myrmecia species to cause anaphylaxis in patients. [257]
The bulldog ant Myrmecia brevinoda is the largest ant in the world in terms of average worker size [1]. The ant fauna of Australia is large and diverse. As of 1999, Australia and its external territories represent 1,275 described taxa (subspecies included) divided into 103 genera and 10 subfamilies. [2]
Weaver ants or green ants are eusocial insects of the Hymenoptera family Formicidae belonging to the tribe Oecophyllini. Weaver ants live in trees (they are obligately arboreal ) and are known for their unique nest building behaviour where workers construct nests by weaving together leaves using larval silk . [ 3 ]
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Most organisms forage, hunt, or use photosynthesis to get food, but around 50 million years ago — long before humans were around — ants began cultivating and growing their own food.
However, some ants such as the green-head ant (Rhytidoponera metallica) are not affected by the presence of meat ants and are still successful in finding food sources. [86] As green-head ants are general predators and forage singularly and cannot recruit other nestmates, they are unable to defend food sources from dominant ants.
Workers measure 18 to 27.5 millimetres (0.71 to 1.08 in) and queens are 24 to 25 millimetres (0.94 to 0.98 in). The ant is reddish yellow, but the head and gaster is blackish brown. The clypeus, labrum and mandibles are yellow. The queens can be distinguished from the workers by its coarser body and the long, abundant pilosity. [25]