''Otiorhynchus'' (sometimes misspelled as ''Otiorrhynchus'') is a large

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus com ...

weevil Weevils are beetles belonging to the Taxonomic rank, superfamily Curculionoidea, known for their elongated snouts. They are usually small, less than in length, and Herbivore, herbivorous. Approximately 97,000 species of weevils are known. They b ...

s in the family

Curculionidae The Curculionidae are a family of weevils, commonly called snout beetles or true weevils. They are one of the largest animal families, with 6,800 genera and 83,000 species described worldwide. They are the sister group to the family Brentidae. T ...

. Many species of the genus, particularly the

black vine weevil Black vine weevil (''Otiorhynchus sulcatus'') is an insect native to Europe but common in North America as well. It is a pest of many garden plants. Overview The adult weevil is matte black with fused wing covers, and is unable to fly. It feeds ...

(''O. sulcatus'') and the strawberry root weevil (''O. ovatus''), are important pests, both as larvae and as adults. Larvae feed on plant roots. Adults are flightless with fused elytra and feed at night on plant foliage.Warner, R. E. & F. B. Negley. 1976. The genus ''Otiorhynchus'' in America north of Mexico (Coleoptera: Curculionidae). ''Proceedings of the Entomological Society of Washington'' 78 (3): 240-262.Bright, D. E. & P. Bouchard. ''The Insects and Arachnids of Canada'', Part 25: ''Coleoptera. Curculionidae. Entiminae. Weevils of Canada and Alaska''. Vol. 2. Ottawa, NRC Research Press, 2008. . P. 111-131. In many species of the genus at least some races are

polyploid Polyploidy is a condition in which the cells of an organism have more than one pair of ( homologous) chromosomes. Most species whose cells have nuclei ( eukaryotes) are diploid, meaning they have two sets of chromosomes, where each set contain ...

and

parthenogenetic Parthenogenesis (; from the Greek grc, παρθένος, translit=parthénos, lit=virgin, label=none + grc, γένεσις, translit=génesis, lit=creation, label=none) is a natural form of asexual reproduction in which growth and development ...

, while the rest of the races and species are

diploid Ploidy () is the number of complete sets of chromosomes in a cell, and hence the number of possible alleles for autosomal and pseudoautosomal genes. Sets of chromosomes refer to the number of maternal and paternal chromosome copies, respectively ...

and

bisexual Bisexuality is a romantic or sexual attraction or behavior toward both males and females, or to more than one gender. It may also be defined to include romantic or sexual attraction to people regardless of their sex or gender identity, whi ...

. ''Otiorhynchus'' weevils, particularly '' O. scaber'', have been a popular subject for studies of the evolution of parthenogenesis. The genus is native to the

Palearctic The Palearctic or Palaearctic is the largest of the eight biogeographic realms of the Earth. It stretches across all of Eurasia north of the foothills of the Himalayas, and North Africa. The realm consists of several bioregions: the Euro-Sibe ...

region. However, sixteen species were inadvertently introduced to

North America North America is a continent in the Northern Hemisphere and almost entirely within the Western Hemisphere. It is bordered to the north by the Arctic Ocean, to the east by the Atlantic Ocean, to the southeast by South America and the Car ...

and have become widespread there. A number of species are

troglobites A troglobite (or, formally, troglobiont) is an animal species, or population of a species, strictly bound to underground habitats, such as caves. These are separate from species that mainly live in above-ground habitats but are also able to live u ...

, cave-dwelling animals that lack eyes.Hlavač, P. (2011)
Endogean and cavernicolous Coleoptera of the Balkans. XI. Revision of the subgenus ''Troglorhynchus'' Reitter of the genus ''Otiorhynchus'' Germar (Coleoptera: Curculionidae).
''Natura Croatica'' 20(1), 189-200.di Marco, C. and G. Osella. (2002)
''Otiorhynchus radjai'' sp. n. from Vis Island (Dalmatia, Croatia), and description of a new subgenus of ''Otiorhynchus'' Germar (Coleoptera, Curculionidae).
''Italian Journal of Zoology'' 69(3), 257-62. There are over 1,500 species in this genus, which is divided into at least 105 subgenera. Species include: *''

Otiorhynchus alpicola ''Otiorhynchus'' (sometimes misspelled as ''Otiorrhynchus'') is a large genus of weevils in the family Curculionidae. Many species of the genus, particularly the black vine weevil (''O. sulcatus'') and the strawberry root weevil (''O. ovatus'' ...

'' *''

Otiorhynchus arcticus ''Otiorhynchus'' (sometimes misspelled as ''Otiorrhynchus'') is a large genus of weevils in the family Curculionidae. Many species of the genus, particularly the black vine weevil (''O. sulcatus'') and the strawberry root weevil (''O. ovatus'' ...

'' *'' Otiorhynchus cribricollis'' *''

Otiorhynchus cuneiformis ''Otiorhynchus'' (sometimes misspelled as ''Otiorrhynchus'') is a large genus of weevils in the family Curculionidae. Many species of the genus, particularly the black vine weevil (''O. sulcatus'') and the strawberry root weevil (''O. ovatus'' ...

'' *''

Otiorhynchus dieckmanni ''Otiorhynchus'' (sometimes misspelled as ''Otiorrhynchus'') is a large genus of weevils in the family Curculionidae. Many species of the genus, particularly the black vine weevil (''O. sulcatus'') and the strawberry root weevil (''O. ovatus'' ...

'' *''

Otiorhynchus frater ''Otiorhynchus'' (sometimes misspelled as ''Otiorrhynchus'') is a large genus of weevils in the family Curculionidae. Many species of the genus, particularly the black vine weevil (''O. sulcatus'') and the strawberry root weevil (''O. ovatus'' ...

'' *'' Otiorhynchus gemmatus'' *''

Otiorhynchus grischunensis ''Otiorhynchus'' (sometimes misspelled as ''Otiorrhynchus'') is a large genus of weevils in the family Curculionidae. Many species of the genus, particularly the black vine weevil (''O. sulcatus'') and the strawberry root weevil (''O. ovatus'' ...

''Germann, C. (2010)
''Otiorhynchus'' (''Nihus'') ''grischunensis'' sp. n.—a new species of the ''O. rhilensis'' species group from the Swiss Alps (Curculionidae, Entiminae).
''Zootaxa'' 2368, 59-68. *''

Otiorhynchus ligneus ''Otiorhynchus ligneus'' is a species of broad-nosed weevil in the beetle family Curculionidae. It is found in North America. References Further reading

* * Entiminae Articles created by Qbugbot Beetles described in 1807 {{Entimin ...

'' *''

Otiorhynchus ligustici ''Otiorhynchus ligustici'', known generally as the alfalfa snout beetle or lovage weevil, is a species of broad-nosed weevil The Entiminae are a large subfamily in the weevil family Curculionidae, containing most of the short-nosed weevils, ...

'' *''

Otiorhynchus magnanoi ''Otiorhynchus'' (sometimes misspelled as ''Otiorrhynchus'') is a large genus of weevils in the family Curculionidae. Many species of the genus, particularly the black vine weevil (''O. sulcatus'') and the Otiorhynchus ovatus, strawberry root wee ...

''Keskin, B. (2007)
A new species of the genus ''Otiorhynchus'' Germar, 1822 (Coleoptera: Curculionidae: Entiminae) from Western Anatolia (Turkey).
''Zootaxa'' 1588, 63-68. *'' Otiorhynchus meridionalis'' *''

Otiorhynchus morio ''Otiorhynchus morio'' is one of the many species in the weevil family ( Curculionidae). It was first described by German entomologist Ernst Friedrich Germar Ernst Friedrich Germar (3 November 1786 – 8 July 1853) was a German professor and d ...

'' *'' Otiorhynchus ovatus'' *'' Otiorhynchus porcatus'' *'' Otiorhynchus rhacusensis'' *'' Otiorhynchus radjai'' *'' Otiorhynchus raucus'' *'' Otiorhynchus rugifrons'' *'' Otiorhynchus rugostriatus'' *''

Otiorhynchus scaber ''Otiorhynchus carinatopunctatus'' is a species of broad-nosed weevil The Entiminae are a large subfamily in the weevil family Curculionidae, containing most of the short-nosed weevils, including such genera as ''Entimus'', '' Otiorhynchus'' ...

'' *'' Otiorhynchus singularis'' *''

Otiorhynchus sulcatus Black vine weevil (''Otiorhynchus sulcatus'') is an insect native to Europe but common in North America as well. It is a pest of many garden plants. Overview The adult weevil is matte black with fused wing covers, and is unable to fly. It feeds ...

'' *'' Otiorhynchus vehemens''