Silverfish and firebrats
Silverfish and firebrats (also called bristletails) belong to the insect order Thysanura. Three species of silverfish, Lepisma saccharina, Ctenolepisma longicaudata and Ctenolepisma quadriseriata, and one species of firebrat, Thermobia domestica, are the important house-dwelling bristletails in North America. Some of the differences between these species are shown in Table 1. All bristletails are carrot shaped, somewhat flattened, and covered with grayish scales. They have long, slender antennae and three slender appendages at the rear of the body. They are wingless and do not fly. However, they move quickly, often stopping for short intervals and then rapidly moving on.
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