Four-lined Silverfish vs Giant Nicoletiid

Side-by-side species comparison

Attribute Four-lined Silverfish Giant Nicoletiid
Scientific Name Ctenolepisma lineatum Texoreddellia aquilonaris
Order Zygentoma Zygentoma
Family Lepismatidae Nicoletiidae
Size 8-12 mm 15-25 mm
Habitat Woodlands Caves
Diet Detritivores Detritivores
Regions Mediterranean Europe, North Africa North America, Texas
Conservation Least Concern Vulnerable

Four-lined Silverfish

A silverfish identified by four dark longitudinal lines on its body. It is found outdoors under bark and stones in Mediterranean climates.

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Did You Know?

Unlike most silverfish, it is primarily an outdoor species that rarely enters buildings.

Giant Nicoletiid

A cave-dwelling, blind silverfish relative found in Texas caves. It is completely unpigmented and white, with elongated appendages adapted to cave life.

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Did You Know?

Cave-adapted silverfish like this species represent some of the most ancient lineages of living insects still inhabiting their ancestral habitat type.