water beetle

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Related to water beetle: Water scavenger beetle

water beetle,

name for aquatic beetlesbeetle,
common name for insects of the order Coleoptera, which, with more than 300,000 described species, is the largest of the insect orders. Beetles have chewing mouthparts and well-developed antennae.
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 of several families. They should not be confused with water bugswater bug,
name for a large number of water-living bugs, comprising several families of the order Hemiptera (true bugs). All have jointed, sharp, sucking beaks, breathe air, and undergo gradual metamorphosis (see insect).
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, which are true bugs (order Hemiptera). The predaceous diving beetles (family Dytiscidae) are a large group, widespread in quiet streams and ponds. They are black, brown, or greenish, .08 to 1.57 in. (3–40 mm) long, with smooth oval bodies and hairy, oarlike hind legs. There is a cavity beneath the wings for holding an air supply, so the diving beetle can remain submerged for long periods; however, the insect often hangs head down from the surface, exposing the openings (spiracles) of the last two of its breathing tubes, located at the tip of the abdomen. Both the adults and the long, conspicuously segmented larvae prey on a variety of animals, including snails and fish much larger than themselves. Adults of most species are strong fliers, and many are attracted to lights at night. The water scavenger beetles (family Hydrophilidae), of similar appearance, are abundant in marshy places in warm parts of the world and feed on water plants and decaying matter. Their larvae are predaceous. The whirligig beetles (family Gyrinidae) are oval, shiny, blue-black to dark brown beetles, about 3/4 in. (19 mm) long. They are found in groups in sheltered places, spinning around on the surface of the water. They feed on small insects on the surface and seldom dive. There are several other groups of water beetles, all classified in the phylum ArthropodaArthropoda
[Gr.,=jointed feet], largest and most diverse animal phylum. The arthropods include crustaceans, insects, centipedes, millipedes, spiders, scorpions, and the extinct trilobites.
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, class Insecta, order Coleoptera.
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References in periodicals archive ?
Water beetles occur in a wide variety of habitats from temporary ponds to small water deposits in bromeliads or in hollow tree trunks (Larson, 1997).
Until 1990 the lesser silver water beetle was thought to survive only in the Somerset Levels.
For example, tadpoles of the wood frog Rana sylvatica grew extra-deep tail fins when sharing a tub with a threatening mud minnow or a dragonfly larva, a somewhat deep tail fin when raised with a less dangerous newt, but nothing special when exposed to a more innocuous water beetle.
Escorted by a ferry manned by the Skye and Kyle Against Toll campaigners, with a lifeboat standing by, Alex, 34, and Ian, 37, put to sea in their "Water Beetle" - an amphibious Volkswagen.
3,600 adults of the long-toed water beetle Postelichus immsi (Coleoptera: Dryopidae) crawling upstream concurrent with upstream recession of surface water in the Santa Maria River, La Paz and Mohave counties, Arizona.
Crawling water beetle - Common in ponds and quiet areas of streams, but frequently are overlooked because of their small (1/8 inch) size.
The water beetle bears little resemblance to similar American beetles, seeming instead to be derived from those native to Eurasia.
providing a natural habitat for breeding and wetland invertebrates such as dragonflies and water beetles." His neighbors are not having it, disagreeing with why the pond was built.
It abounded with fish, water beetles, dragon flies and other creatures.
The 28-year-old Shape Of You singer sought planning permission to build the pond to "support nature conservation...providing a natural habitat for breeding and wetland invertebrates such as dragonflies and water beetles, as well as providing a source of drinking water to birds and mammals."
From bucket showers to palm-sized water beetles, Heidi's message is clear: hold tight to the people you love, take comfort in the man by your side, and keep a look out for anything that can make you smile.