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Myrmoteras : ウィキペディア英語版
Myrmoteras

''Myrmoteras'' is a genus of ants in the subfamily Formicinae and the sole member of the tribe Myrmoteratini.〔ITIS: (Genus ''Myrmoteras'' )〕 They have enormous eyes, a character found in other ancient genera, and extremely elongated mandibles with eight to 16 teeth. These work as trap-jaws and can open up to 270°.〔Bolton, B. (2003): Synopsis and Classification of Formicidae. ''Memoirs of the American Entomological Institute. 71. 370 pp.〕
==Description==

While the elongated mandibles look superficially similar to those of the basal ''Myrmecia'', the mechanism is, as a whole, totally dissimilar and is rather convergent to that of the ponerine genera ''Anochetus'' and ''Odontomachus'', and the myrmicine ''Strumigenys''. The trigger mechanism of the trap-jaw-like mandibles of ''Myrmoteras'' consists of two hairs. Other trap-jawed genera are ''Daceton'', ''Acanthognathus'', ''Orectognathus'', ''Microdaceton'', and ''Epitritus''.

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