Members of this family are widespread and common, primarily in the northern hemisphere. Most species have long antennae and the last two antennal segments in some species are ringed, making them appear to be composed of a large number of segments. These springtails have abdominal segment 3 only slightly longer than segment 4, and antennae in which segment 3 is longer or much longer than segment 4. This enables some species to roll their antennae into a coil. Pogonognathellus longicornis (= Tomocerus) is about 6 mm long and widely distributed in northern Europe.

Silver springtail, Tomocerus flavescens (Fig. 6.1c) Adults are 6-10 mm long, and with a silvery gray to grayish blue body. This large springtail is common on moist ground, in gardens, and in houses and greenhouses. It is cosmopolitan.

Tomocerus minor This species is one of the several spring-tails that occur on sewerage filter beds. It molts at intervals of 1-4 weeks and lives about 1 year.

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