Order
Zygentoma (Silverfishes)
Tricholepidion gertschi. Photo: (c) Michael Eisen, some rights reserved (CC BY)
Zygentoma are an order in the class insecta. The Zygentoma include the so-called silverfish or fishmoths, and the firebrats. A conspicuous feature of the order is that the members all have three long caudal filaments. The two lateral filaments are cerci, and the medial one is an epiproct or appendix dorsalis. In this they resemble the Archaeognatha, though, unlike in the latter order, the cerci of Zygentoma are nearly as long as the epiproct.
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