water bug

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Related to American cockroach: German cockroach, oriental cockroach

water bug,

name for a large number of water-living bugsbug,
common name correctly applied to insects belonging to the order Hemiptera, although members of the order Homoptera (e.g., mealybug) are sometimes referred to as bugs, as are other insects in general.
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, comprising several families of the order Hemiptera (true bugs). All have jointed, sharp, sucking beaks, breathe air, and undergo gradual metamorphosis (see insectinsect,
invertebrate animal of the class Insecta of the phylum Arthropoda. Like other arthropods, an insect has a hard outer covering, or exoskeleton, a segmented body, and jointed legs. Adult insects typically have wings and are the only flying invertebrates.
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). They are found on or below the surface of almost all quiet streams and ponds; a few forms live in rapidly flowing water. The water boatmen (family Corixidae) are abundant in lakes and ponds throughout most of the world. They are ovalbodied, with flattened, oarlike hind legs used for propulsion; the short front legs are used for gathering food and for anchoring the bug to aquatic vegetation. Water boatmen store air in a concavity beneath the wings and are thus able to remain submerged for long periods. They feed on algae and other small aquatic organisms and, unlike the predaceous water bugs, do not bite humans. The other water bugs are carnivorous and prey, according to their size, on young fishes, snails, crustaceans, and the adults and larvae of other insects. The backswimmersbackswimmer,
common name for water bugs of the cosmopolitan family Notonectidae, so named because they swim upside down, usually near the surface of the water. They have oval bodies and long, oarlike hind legs, with which they swim rapidly, but their backs are more convex than
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 (family Notonectidae) resemble the water boatmen in appearance, but swim upside down. The water striders, or water skaters (family Gerridae), have two pairs of long, slender legs that enable them to move over the surface film of quiet waters, where they often congregate in large numbers. They also have a pair of short, grasping forelegs, used for catching insects on the surface. All live in freshwater except those of the genus Halobates, which are found in oceans. The giant water bugs (family Belostomatidae), with wide, flat bodies and grasping forelegs, are the world's largest bugs and among the largest of the insects. Members of some North American species grow 2 in. (5 cm) long, while one South American form attains a length of more than 4 in. (10 cm). Their prey can include small fish, frogs, snakes, and turtles. They fly well and are attracted to lights at night, hence their other common name, electric-light bug. In some species the female glues her eggs to the back of the male, where they remain until they hatch. The water scorpions (family Nepidae) are named for the breathing tube that protrudes from the rear of the abdomen. There are several other water bug families. The term water bug is also sometimes applied to the various water beetleswater beetle,
name for aquatic beetles of several families. They should not be confused with water bugs, which are true bugs (order Hemiptera). The predaceous diving beetles (family Dytiscidae) are a large group, widespread in quiet streams and ponds.
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. True water bugs are 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 Hemiptera.
The Columbia Electronic Encyclopedia™ Copyright © 2013, Columbia University Press. Licensed from Columbia University Press. All rights reserved. www.cc.columbia.edu/cu/cup/

water bug

[′wȯd·ər ‚bəg]
(invertebrate zoology)
Any insect which lives in an aquatic habitat during all phases of its life history.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Full, 25 years ago, discovered that American cockroaches can run on two legs -- a feat certified by the Guinness Book of World Records -- and can achieve a speed of nearly 5 feet per second, or 50 times their body length per second.
Arillaet al., "Molecular characterization of American cockroach tropomyosin (Periplaneta americana allergen 7), a cross-reactive allergen," Journal of Immunology, vol.
(1992) determined that, among five cockroach species, the American cockroach was the least susceptible to infection by Steinernema carpocapsae (Weiser, 1955) whether the nematode was applied directly or in baits; in particular, no mortality occurred with bait stations.
Recombinant American cockroach component, Per a 1, reactive to IgE of allergic Thai patients.
Consider the case of the American cockroach. A hefty beast that can fly and that migrates after heavy summer rains in the southern United States, Periplaneta americana leaves a large splat on the windshield--nothing to be thankful about.
The most common cockroach species in the United States are the American cockroach (Periplaneta americana), the German cockroach (Blattella germanica), and the Oriental cockroach (Blatta orientalis).
A comparison of behavioral alterations in the brown cockroach, Periplaneta brunnea, and the American cockroach, Periplaneta americana, infected with the acanthocephalan, Moniliformis moniliformis.
A close look at some 4-inch-long Costa Rican cousins of the American cockroach may make you find their Western counterparts less upsetting.
American Cockroach: No stranger to our hotels and hospitals.
Several kinds of cockroaches use these chemicals, but until now, scientists had only identified and made the one belonging to the American cockroach.
Mongeau and Brian McRae, an undergraduate bioengineering major, analyzed the mechanics of the ninja-like maneuver and discovered that the cockroach, an American cockroach (Periplaneta americana), wasn't merely falling over the ledge.

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