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''Myrmecia'' is a genus of ants first established by Danish zoologist Johan Christian Fabricius in 1804. The genus is a member of the subfamily Myrmeciinae of the family Formicidae. ''Myrmecia'' is a large genus of ants, comprising at least 94 species that are found throughout Australia and its coastal islands, while a single species is only known from New Caledonia. One species has been introduced out of its natural distribution and was found in New Zealand in 1940, but the ant was last seen in 1981. These ants are commonly known as "bulldog ants" or "jack jumper" ants, and are also associated with many other common names. They are characterised by their extreme aggressiveness, ferocity, and painful stings. Some species are known for the jumping behaviour they exhibit when agitated. Species of this genus are also characterised by their elongated mandibles and large compound eyes that provide excellent vision. They vary in colour and size, ranging from . Although workers and queens are hard to distinguish from each other due to their similar appearance, males are identifiable by their perceptibly smaller mandibles. Almost all ''Myrmecia'' species are monomorphic, with little variation among workers of a given species. Some queens are ergatoid and have no wings, while others have either stubby or completely developed wings. Nests are mostly found in soil, but they can be found in rotten wood and under rocks. One species does not nest in the ground at all; its colonies can only be found in trees. A queen will mate with one or more males, and during colony foundation she will hunt for food until the brood have fully developed. The life cycle of the ant from egg to adult takes several months. ''Myrmecia'' workers exhibit greater longevity in comparison to other ants, and workers are also gamergates, that are able to reproduce with male ants. ''Myrmecia'' is one of the most primitive group of ants on earth, exhibiting differentiated behaviours from other ants. Workers are solitary hunters and do not lead other workers to food. Adults are omnivores that feed on sweet substances, but the larvae are carnivores that feed on captured prey. Very few predators eat these ants due to their sting, but their larvae are often consumed by blindsnakes and echnidnas, and a number of parasites infect both adults and brood. Some species are also effective pollinators. ''Myrmecia'' stings are very potent, and the venoms from these ants are among the most toxic in the insect world. In Tasmania, 3% of the human population are allergic to the venom of ''M. pilosula'', and these sensitive people can suffer from anaphylactic reactions if stung. Thus, the ants' venom is potentially dangerous to those who are allergic, and many human deaths have been recorded. People prone to severe allergic reactions can be treated with allergen immunotherapy (desensitisation). ==Etymology and common names== The generic name ''Myrmecia'' derives from Greek word ''Myrmec-'' (+ -''ia''), meaning "ant". In Western Australia, the Australian Aborigines called these ants ''kallili'' or ''killal'', meaning "lion-ant". Ants of this genus are popularly known as bulldog ants, bull ants or jack jumper ants. This is due to their ferocity and the way they hang off their victims using their mandibles, and also due to the jumping behaviour displayed by some species. Other common names include inch ants, sergeant ants and soldier ants. The jack jumper ant and other members of the ''Myrmecia pilosula'' species group are commonly known as "black jumpers", "hopper ants", "jumper ants", "jumping ants", "jumping jacks" and "skipper ants". 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Myrmecia (ant)」の詳細全文を読む スポンサード リンク
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