Ctenolepisma, Escherich, 1905

Chick, Andrew I. R., 2018, A Revised Checklist of the UK Silverfish (Zygentoma: Lepismatidae), Zootaxa 4504 (3), pp. 447-450 : 449

Genus CTENOLEPISMA

Ctenolepisma lineata (Fabricius, 1775) four lined silverfish, Four-lined Silverfish ( Notton, 2018)

Baltanas et al. (2012) classified the species C.lineata abandoning the obsolete variety Ctenolepisma lineata var pilifera. The species has an approximate size of up to 13.5mm (Baltanas et al, 2012) characteristic 4 longitudunial strips ( Notton, 2018) pigmentation may be faint in synathropic specimens (Baltanas et al, 2012). Notton (2018) remarks that this species has previously been found in the UK. Baltanas et al (2013) states that C.lineata is wipespread in Central Europe and is facultative synanthropic.

Ctenolepisma longicaudata (Escherich 1905) Giant Silverfish , grey Silver fish ( Notton, 2018)

Length up to 20mm, cosmopolitan, established in the UK 2014 ( Notton, 2018), first reported by Goddard et al (2016) distribution is expanding rapidly ( Notton, 2018)

C.longicaudata , has a carrot shaped, tapered and flattened body like the other members of the family, it is uniformly silver grey scalled with obvious bristles at the sides of the body with long and slender tail filaments and antennae. Is believed to have become established in the UK in 2014 ( Notton, 2018), but was first reported by Goddard et al. (2016). Its distribution in the UK is expanding rapidly ( Notton, 2018). This species can tolerate a lower range of humidities than and thus has the potential to outrange L. saccharina ( Notton, 2018)