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259:, some eggs are laid in the late fall or the winter, when weather conditions permit. Adults also overwinter and become increasingly active in March and April. Eggs are laid in batches of up to 25 inside alfalfa stems. The larvae feed for three or four weeks, moulting three times, before pupating in the cocoons they make. They emerge as adults in about one or two weeks. After feeding for a week or two, they may experience
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is broadest in the centre. The general colour of the insect is brown, with a dark mid-dorsal stripe. The larva has a distinctive black head and no legs; it is yellowish-green, with a white dorsal stripe and faint white lateral stripes. It is about 1 cm (0.4 in) long just before pupation. It
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and feed on the foliage of alfalfa, the larvae doing the most damage. The adults eat the edges of the leaves, giving them a feathery appearance. At first, the larvae feed on terminal leaves leaving puncture marks, but they later move down the plant to feed on lower leaves. The leaves attacked are
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during the remainder of the summer, in which they demonstrate a dampening of their metabolic, respiratory and nervous system activities. In fall, the adults hide in the crowns of alfalfa plants or move onto coarse vegetation in ditches or by fences or in nearby woodland.
212:
fields throughout Europe. Considered a destructive threat to alfalfa production in North
America, several accidental introductions have been successfully countered though the use of a variety of
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The alfalfa weevil grows to a length of about 4 to 5.5 mm (0.16 to 0.22 in). The rostrum or beak is short and broad. The frons is half as wide as the rostrum while the
302:. The female of these wasps is only about 0.125 in (0.32 cm) long, and lays an egg inside an early stage of the larva of the weevil. The developing wasp larva is a
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Cunningham, R. K.; Tombes, A. S. (August 1966). "Succinate oxidase system in the alfalfa weevil, Hypera postica, during aestivation (summer diapause)".
598:"Aestivation (Summer Diapause) in Hypera postica (Coleoptera: Curculionidae). I. Effect of Aestivation, Photoperiods, and Diet on Total Fatty Acids1"
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Kutyna, F. A.; Tombes, A. S. (1966-11-26). "Bioelectric activity of the central nervous system in normal and diapausing alfalfa weevils".
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skeletonised as the larvae feed between the veins, and plant yields can be reduced by up to 15%. Sometimes the larvae are killed by the
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557:"Seasonal Changes in the Reproductive Organs of the Alfalfa Weevil, Hypera postica (Coleoptera: Curculionidae), in South Carolina1"
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239:), but that species is nearly twice as large, the larvae have tan heads and they seldom cause much damage to alfalfa crops.
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322:. Both these species of wasp have been investigated for their potential for biological control of the weevil, and
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Sweetman, Harvey L.; Wedemeyer, Jack (Jan 1933). "Further
Studies of the Physical Ecology of the Alfafa Weevil,
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in a white, pea-sized cocoon made of loosely-woven silk. It resembles the clover leaf weevil (
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Economic Plants and their
Diseases, Pests and Weeds
412:. University of Illinois at Urbana-Champaign. 2004
602:Annals of the Entomological Society of America
561:Annals of the Entomological Society of America
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330:because of its higher reproductive rate.
514:Comparative Biochemistry and Physiology
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830:057fd641-4fdf-4c49-a7cf-3f6f4fcd0540
326:is generally considered superior to
272:Both the larvae and the adults are
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596:Tombes, Averett S. (1966-03-01).
555:Tombes, Averett S. (1964-07-01).
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526:10.1016/0010-406X(66)90207-6
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410:Integrated Pest Management
214:biological control species
985:Beetles described in 1813
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52:Scientific classification
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200:, commonly known as the
436:Gyll. – Lucerne weevil"
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615:10.1093/aesa/59.2.376
574:10.1093/aesa/57.4.422
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208:; it can be found in
825:Fauna Europaea (new)
655:. Cornell University
293:Bathylplectes anurus
283:Zoophthora phytonomi
643:Bathyplectes anurus
475:1966Natur.212..956K
365:1933Ecol...14...46S
186:Rhynchaenus postica
653:Biological Control
253:
204:, is a species of
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942:Open Tree of Life
677:Taxon identifiers
469:(5065): 956–957.
402:"Alfalfa weevil:
279:pathogenic fungus
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27:Species of beetle
16:(Redirected from
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647:B. curculionis
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608:(2): 376–380.
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520:(4): 725–733.
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890:NatureServe
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709:Wikispecies
442:. AgroAtlas
261:aestivation
220:Description
974:Categories
659:13 October
446:10 October
416:10 October
406:Gyllenhal"
334:References
304:parasitoid
243:Life cycle
109:Coleoptera
89:Arthropoda
980:Hyperinae
624:0013-8746
583:0013-8746
534:0010-406X
491:0028-0836
324:B. anurus
320:predation
316:B. anurus
288:ichneumon
169:Gyllenhal
137:Species:
75:Kingdom:
69:Eukaryota
895:2.747136
869:11178965
760:BugGuide
736:BioLib:
700:Q7712239
694:Wikidata
257:Illinois
226:pronotum
178:Synonyms
115:Family:
85:Phylum:
79:Animalia
65:Domain:
843:1191191
542:5967408
499:6003744
471:Bibcode
381:1932576
361:Bibcode
353:Ecology
290:wasps,
274:diurnal
231:pupates
210:alfalfa
171:, 1813)
125:Genus:
105:Order:
99:Insecta
95:Class:
957:325809
954:uBio:
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268:Damage
206:weevil
130:Hypera
934:20543
921:36757
864:IRMNG
799:EUNIS
778:3NNM6
739:13365
377:JSTOR
251:Larva
916:NCBI
877:ITIS
838:GBIF
786:EPPO
747:BOLD
661:2016
645:and
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538:PMID
530:ISSN
495:PMID
487:ISSN
448:2016
418:2016
308:host
296:and
903:NBN
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Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
