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单词 water bug
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water bug


water bug

n.1. Any of various aquatic insects, especially a water boatman, a backswimmer, or a large predatory hemipteran of the family Belostomatidae.2. A large cockroach.

water bug

n (Animals) any of various heteropterous insects adapted to living in the water or on its surface, esp any of the family Belostomatidae (giant water bugs), of North America, India, and southern Africa, which have flattened hairy legs

wa′ter bug`


n. 1. any of various aquatic bugs, as of the family Belostomatidae. 2. (loosely) a very large, relatively slow cockroach, as the American cockroach. [1740–50]
Thesaurus
Noun1.water bug - a true bug: large aquatic bug adapted to living in or on the surface of waterwater bug - a true bug: large aquatic bug adapted to living in or on the surface of waterheteropterous insect - true bugs: insects whose forewings are membranous but have leathery tipsgiant water bug - large water bug with piercing and sucking mouthparts; feeds on young fisheswater scorpion - long-legged aquatic insect having the front legs fitted for seizing and holding prey and the abdomen extended by a long breathing tubeboat bug, water boatman - carnivorous aquatic bug having paddle-like hind legspond-skater, water skater, water strider - long-legged bug that skims about on the surface of water
2.water bug - small light-brown cockroach brought to United States from Europewater bug - small light-brown cockroach brought to United States from Europe; a common household pestBlattella germanica, Croton bug, crotonbug, German cockroachcockroach, roach - any of numerous chiefly nocturnal insects; some are domestic pestsBlattella, genus Blattella - small cockroaches

water bug


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.

water bug

[′wȯd·ər ‚bəg] (invertebrate zoology) Any insect which lives in an aquatic habitat during all phases of its life history.
MedicalSeeAmerican cockroach

water bug


Related to water bug: giant water bug
  • noun

Synonyms for water bug

noun a true bug: large aquatic bug adapted to living in or on the surface of water

Related Words

  • heteropterous insect
  • giant water bug
  • water scorpion
  • boat bug
  • water boatman
  • pond-skater
  • water skater
  • water strider

noun small light-brown cockroach brought to United States from Europe

Synonyms

  • Blattella germanica
  • Croton bug
  • crotonbug
  • German cockroach

Related Words

  • cockroach
  • roach
  • Blattella
  • genus Blattella
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