Diplurans

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_ species in the order Diplura. Pale in color, these elongate, soft-bodied hexapods do not have eyes. They are sometimes called two-tailed bristlctails, a name that refers to the two abdominal cerci, which may be long or pincerlike. They should not, however, be confused with the true bristlctails (see p.46). The large head has long antennae and biting mouthparts contained within a pouch. Males deposit stalked spcrmatophores, which females take into their genital opening. Kggs are often laid in clumps, and females may guard their brood.

Diplurans live in rotting vegetation, compost heaps, and soil, and under stones and wood. With their slender, flexible bodies and strong legs, they can move through soil very easily.

long, distinctive

short legs long, slender body last abdominal segment brown

narrow thoracic segments stout, forcepslike cerci pale and straw-colored body

0rder DIPLURA

Family CAMPODKIDAK

Feeding habits

0rder DIPLURA

Family JAi>Yc;iI)AK

Campodeids

1 hese white or yellow-tinged diplurans have long, multisegmented cerci and supporting projections on the underside of their abdomen. Air is taken in through spiracles on the thorax.

• LlKK CYCLK Kggs are usually laid in soil. Initially immobile, larvae become progressively more active and look like small adults.

• OCCl JRRKNCE Worldwide. Widespread in various habitats, including caves. They are very common deep in soil, but arc also found under tree bark and in decaying wood and vegetation.

CAMPODEA FRAGILIS is a common European and Asian species, found in rotting vegetation.

Japygids

These species are pale, slender, and flexible, with telescopic antennae that can be shortened as they make their way through soil. The cerci arc dark, tough, and forceplike, similar to those of earwigs (see pp.69-70). Air is taken in through spiracles on the thorax and abdomen.

• like Cycle Eggs are usually laid in soil. The young become more like the adults at successive molts. The abdominal cerci are used to catch small arthropod prey.

• ()(:< :i JRREN(:k Worldwide. In various habitats, in crevices in soil.

• rkmark Japygids can be distinguished from young earwigs by their lack of eyes.

long, distinctive short legs long, slender body last abdominal segment brown narrow thoracic segments pale and straw-colored body stout, forcepslike cerci

HoiJAPYX DIVER SI UNG UIS, or the Slender Dipluran, is native to North America. It is a common soil-dwelling species, approximately Xh-Xin (0.8-1 cm) in length.

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