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- Water_beetle abstract "A water beetle is a beetle adapted to living in water. Water beetles can only live in fresh water/chlorinated water. Water beetles rise to the water surface and take air into their tracheal systems. There are approximately 2000 species of water beetles. The rest marine species tend to live in the intertidal zone. Water beetles are black, brown, or greenish and .08 to 1.57 inches long. Many water beetlescarry an air bubble underneath their abdomens, which both provides an air supply, and prevents water from getting into the spiracles. Others have the surface of their exoskeleton modified to form a plastron, or "physical gill", which permits direct gas exchange with the water. The hind legs are strong like the grasshoppers except it is not for jumping but for swimming. The wing covers are usually grooved on the female and smooth on the male. They have fringed hind legs with hair adapted for swimming. Adults hibernate in underwater soil during a good portion of the year. Water beetles are attracted to lights at night. Water beetles often feed on wayward insects that fall into the water and drown.Most families of water beetles have larvae that are also aquatic; many have aquatic larvae and terrestrial adults.Types that are aquatic in all life stages include whirligig beetles (Gyrinidae), Haliplidae, Noteridae, Amphizoidae, Dytiscidae and HydroscaphidaeWater beetles belong to the order Coleoptera. True (or diving) beetles make up the family Dytiscidae. Types in which the adults are not necessarily aquatic include Hydrophilidae, Lutrochidae, Dryopidae, Elmidae, Eulichadidae, Heteroceridae, Limnichidae, Psephenidae, Ptilodactylidae and Sphaeriusidae. A nickname that people call the water beetle is the water devil. Because of their rapidity, they are also known as water tigers.".
- Water_beetle thumbnail Water_beetle_nagerhole.jpg?width=300.
- Water_beetle wikiPageExternalLink beetles.pdf.
- Water_beetle wikiPageID "423684".
- Water_beetle wikiPageRevisionID "599549239".
- Water_beetle hasPhotoCollection Water_beetle.
- Water_beetle subject Category:Beetles.
- Water_beetle subject Category:Insect_ecology.
- Water_beetle comment "A water beetle is a beetle adapted to living in water. Water beetles can only live in fresh water/chlorinated water. Water beetles rise to the water surface and take air into their tracheal systems. There are approximately 2000 species of water beetles. The rest marine species tend to live in the intertidal zone. Water beetles are black, brown, or greenish and .08 to 1.57 inches long.".
- Water_beetle label "Water beetle".
- Water_beetle label "خنفساء الماء".
- Water_beetle sameAs m.026ryj.
- Water_beetle sameAs Q1386379.
- Water_beetle sameAs Q1386379.
- Water_beetle wasDerivedFrom Water_beetle?oldid=599549239.
- Water_beetle depiction Water_beetle_nagerhole.jpg.
- Water_beetle isPrimaryTopicOf Water_beetle.
