In this case, the bottom of the hierarchy is occupied by Iridomyrmex purpureus, which is a type of red ant.

这样的话，层次的底部被Iridomyrmex purpureus所占据了，这是一种红蚂蚁。

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Moreover, each red ant has the characteristics that pertain to each of its ancestor categories. For example, red ants have six legs, which is one of the defining characteristics of the class Insecta.

而且每只红蚂蚁同样有符合祖先类别的特征，例如红蚂蚁都有六条腿，这就是昆虫纲的特征之一。

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In Ghana, a spider called Myrmarachne foenisex is an excellent mimic of the red weaver ant, a vicious creature with a nasty sting.

ECONOMIST: Insects and mimicry