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Myrmelachista schumanni
''Myrmelachista schumanni'', also known as the lemon ant, is a species of ant that is notable for the creation of Devil's garden. Using its own herbicide they kill off all the plants in an area except for the myrmecophytes, or ant-plants, in which they reside.
==Ant–plant mutualism==
''M. schumanni'' live in large clearings in the rainforest, called devil's gardens, where there is little to no bio-diversity compared to the surrounding area. There are only one to three species of plants found in these areas consisting of ''Cordia nodosa'', ''Tococa guianensis'', ''Duroia hirsuta'' or ''Clidemia heterophylla''.
The few studies of the mutualism between ''M. schumanni''–''D. hirsuta'' have incorrectly concluded that these clearings are formed by allelopathy on the part of ''D. hirsuta''. It was established that worker ants were injecting leaves with formic acid, a toxin commonly produced in ant species, and the plants started to die within 24 hours. Lemon ants are the only known insect to use formic acid as a herbicide.
By killing other plants, the lemon ants provide themselves with a nest site, usually residing in D. ''hirsuta''. Researchers estimate that the largest garden observed, contains 328 trees over 1,300 square meters and is around 800 years old.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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