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| There are 37 species in 3 genera; 2 generas are found in North America. The family can be found worldwide with the exception of the polar regions and remote oceanic islands. Adults range in length from 2-3 mm. Their preferred habitat is vascular aquatic plants in standing water. As predatory hunters, Pleidae consume the body fluids of small invertebrates. Pleidae are completely harmless to humans as their rostrum is far too small to pierce skin. Their hind claws enable them to clamber through vegetation which apart from swimming is their main form of locomotion. They are in an upside-down position while swimming. Pleidae are air-breathers and carry an air reserve with them which is periodically replenished by a dash to the water's surface. This air is contained in a felt-like cushion on the underside. Thus the belly has a higher buoyancy. |
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