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bug (in zoology)

bug, 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. The true bugs (Hemipterans) have a characteristic pair of front wings that are partially thickened and darkened at the base and partially membranous at the apex. Development is gradual through an incomplete metamorphosis with a number of nymphal stages before the reproductively mature adult stage is reached. Most bugs are terrestrial, but many are aquatic (e.g., various water bugs).

Although bugs vary greatly in size, color, and physical appearance, they all have piercing-sucking mouthparts in the form of a jointed beak. Most species suck plant juices (e.g., the squash bug and chinch bug); however, some suck the blood of other insects and spiders (e.g., the assassin bug and backswimmer). Others, such as the bedbug, feed on people and other animals. Many of these insects characteristically secrete defensive substances (e.g., the stink bug). The true bugs are classified in the phylum Arthropoda, class Insecta, order Hemiptera.

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bug

bug / bəg/ • n. 1. a small insect. ∎ inf. a harmful microorganism, as a bacterium or virus. ∎  an illness caused by such a microorganism. ∎  fig., inf. an enthusiastic, almost obsessive, interest in something: they caught the sailing bug. 2. (also true bug) Entomol. an insect of a large order (Hemiptera) distinguished by having mouthparts that are modified for piercing and sucking. 3. a concealed miniature microphone, used for surveillance. 4. an error in a computer program or system. • v. (bugged , bugging ) [tr.] 1. (often be bugged) conceal a miniature microphone in (a room, telephone, etc.) in order to monitor or record someone's conversations. ∎  record or monitor (a conversation) in this way. 2. inf. annoy or bother (someone). PHRASAL VERBS: bug off inf. go away. bug out inf. 1. leave quickly. 2. chiefly fig. bulge outward.

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Bug (river, E Europe, also known as Western Bug)

Bug (bōōg, bŭg), Pol. Bug, Ukr. Buh or Zakhidnyy Buh, river, c.480 mi (770 km) long, rising in the Volhynian-Podolian hills, W Ukraine. It flows N along the Polish-Ukrainian and Polish-Belarusian borders past Brest and then NW through Poland to join the Vistula River (with the Narew) near Warsaw. It is linked with the Dnieper by the Dnieper-Bug Canal via the Pina River and with the Niemen by the Augustov Canal via the Narva River. The Bug is also known as the Western Bug.

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bug

bug1 †object of dread. XIV. The earliest of several words of similar form and meaning, the connections of which are obscure; viz. †bog, †boggard, (dial.) bogle, bogle-bo, BUGABOO, BUGBEAR, and the more recent BOGEY. Comparison with W. bwg, bwgan ghost, hobgoblin, bwgwl fear, threat, is inevitable, but it is uncertain how these forms are related.

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bug

bug Any member of the insect order Hemiptera, although in the USA any insect is commonly called a bug. True bugs are flattened insects that undergo gradual or incomplete metamorphosis, have two pairs of wings and use piercing and sucking mouthparts. Most feed on plant juices, such as the greenfly, although a number attack animals and are carriers of disease.

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bug

bug Bug Bible a name given to versions of the English Bible ( Coverdale's and Matthew's) in which the words in Psalm 91:5 are translated, ‘thou shalt not be afraid for any bugs by night’.
bug-eyed monster an extra-terrestrial monster with bulging eyes.

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bug

bug An error in a program or system. The word is usually used to mean a localized implementation error rather than, say, an error introduced at the requirements or system-design stage. See also debugging.

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bug

bug2 insect, beetle; bed-bug. Cimex lectularius. XVI. of unkn. orig.

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Bug (river, Ukraine, also known as Southern Bug)

Bug or Southern Bug, river, Ukraine: see Buh.

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bug

bugbug, chug, Doug, drug, dug, fug, glug, hug, jug, lug, mug, plug, pug, rug, shrug, slug, smug, snug, thug, trug, tug •bedbug • ladybug • doodlebug •humbug • firebug • thunderbug •jitterbug, litterbug •shutterbug • Rawlplug • earplug •fireplug • hearthrug

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