Zygentoma

Zygentoma are an order in the class Insecta, and consist of about 550 known species. The Zygentoma include the silverfishes or fishmoths, and the firebrats. A conspicuous feature of the order are the 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, although the cerci of Zygentoma, unlike in the latter order, are nearly as long as the epiproct.

Lepisma is a genus of primitive insects in the order Zygentoma and the family Lepismatidae.

Thermobia (from Ancient Greek θερμός (thermós), meaning "warmth", and βίος (bíos), meaning "life"] is a genus of silverfishes belonging to the family Lepismatidae. The genus was first erected as Termophila by Giovanni Battista Grassi in 1887, emended to Thermophila two years later, and renamed to Thermobia by Ernst Evald Bergroth in 1890. By far the best known member of the genus is the firebrat (T. domestica), which is often seen in warm places indoors such as bakeries.

Ctenolepisma is a genus of primitive insects in the order Zygentoma, closely related to the silverfish and firebrat but less reliant on human habitation, some species being found both indoors and outdoors and some found exclusively outdoors. The genus is distributed nearly worldwide in warm regions. Australia lacks native Ctenolepisma, but is home to introduced species. ==Nomenclature== Most authors have historically treated the nomenclatural gender of Ctenolepisma as feminine, but in 2018 the International Commission on Zoological Nomenclature issued a formal ruling (ICZN Opinion 2427) statin

Nicoletiidae is a family of primitive insects belonging to the order Zygentoma. These insects live primarily underground, under detritus, or in caves. A few species are recorded as commensals inside nests of social insects, such as the species Allotrichotriura saevissima which lives inside fire ant nests. Nicoletiids lack eyes and they lack pigmentation. They have long antennae and terminal abdominal filaments. Coletinia, a genus of this family, range in size between 10 and 15mm, and may have yellowish pigmentation but most species are transparent.

Maindroniidae is a small family of silverfish, basal insects belonging to the order Zygentoma. It contains a single genus, Maindronia, and a handful of species.

species of insect