Entomobryidae

These are slender and long springtails. In the large subfamily Entomobryinae, abdominal segment4is larger than segment3, and the antennae are four-segmented. There are 1130 described species in this subfamily. In the Orchesellinae, the abdominal segments are nearly equal in size. Some species have long antennae and legs, and distinct body coloration. This is a cosmopolitan family, and the included species occur in numerous habitats, including on the soil surface, in leaf litter, caves, and indoors. Several species, including Entomobrya multifasciata, occur in greenhouses. More than 100 species of Pseudosinella (Fig. 6.1b) are found in caves, but some species occur indoors. Many of these species lack eyes.

Entomobrya atrocincta (Fig. 6.2a) Adults have four-segmented antennae inserted on the anterior portion of the head, in front of the eyes. The pronotum is reduced, and the body has stripes or dark markings anteriorly; posteriorly the body is uniformly colored. This species is cosmopolitan and has been reported from indoor flowerpots and infesting powdered milk.

Entomobrya griseoolivata (Fig. 6.2b) Adults have four-segmented antennae inserted on the anterior portion of the head, in front of the eyes. The pronotum is reduced, and the body lacks strips or other markings. This species is cosmopolitan and is a common domestic species.

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