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.
References in periodicals archive ?
Andrew Gresty (pictured), his parents and gran have won a New Holland Beautiful Farm award for environmental stewardship at The Cloy farm near Overton on Dee - underlined by the discovery of colonies of the rare lesser silver water beetle (left) Main picture: ROBERT PARRY JONES :rj020108AndrewGresty-3
sulphuric among collected water beetles, populations may exist in the larger systems but are more difficult to locate because of the larger habitat area and potential lower densities.
Identification Manual for the Water Beetles of Florida (Coleoptera: Dryopidae, Dytiscidae, Elmidae, Gyrinidae, Haliplidae, Hydraenidae, Hydrophilidae, Noteridae, Psephenidae, Ptilodactylidae, Scirtidae).
In the distance two shells slid on the thin flame of sunlight like slender water beetles.
Water beetles, locusts, grubs, ants eggs and crickets were on an off-beat menu at Liverpool Museum's Natural History Centre yesterday .
A man in a red tie, eating fresh water beetles at dawn.
A short list of edible insects (besides the usual crickets and mealworms) includes waxworms, cockroaches, dragonflies, termites, ants, water beetles, cicadas, katydids, grasshoppers and locusts, bees, tomato hornworms, most types of beetle grubs, mopane worms and silkworms
The rest are eaten by water beetles, fish, and dragonfly nymphs.
The water drops 170ft into a seething cauldron where tourist boats, like little water beetles, struggle against the currents for a closer look.
Many live species are on display: butterflies, ladybugs, Emperor scorpion, tarantula, cockroaches, millipedes, crawfish, aphids, water striders, water beetles, click beetles, dung beetles, ants and more.
I wanted it to be a low-key affair, so we didn't tell anyone except my 96-year-old mum, as I didn't want her having a heart attack with the surprise" Strictly Come Dancing judge Len Goodman on keeping his wedding secret "During my travels, I have eaten crickets, termites, water beetles, ants and grubs.