Curculionidae
Guides
Nicentrus saccharinus
Nicentrus saccharinus is a species of flower weevil in the beetle family Curculionidae. It was described by Marshall in 1952. The species is known from North America, specifically the conterminous United States. Available records are sparse, with few documented observations.
Notiodes robustus
Notiodes robustus is a species of weevil in the family Curculionidae, originally described by Schaeffer in 1908. The species has undergone taxonomic revision, with some sources listing it under the synonym Endalus robustus in the family Brachyceridae, though current consensus places it in Curculionidae. As a member of the genus Notiodes, it belongs to a group of small weevils. Published information on its biology and ecology remains sparse.
Notiodes setosus
marsh weevil
Notiodes setosus is a species of marsh weevil in the beetle family Brachyceridae. It was originally described by LeConte in 1876. The species is currently placed in the genus Notiodes, though some sources list it as a synonym under the genus Endalus as Endalus setosus.
Notolomus basalis
Notolomus basalis is a species of true weevil in the beetle family Curculionidae, first described by LeConte in 1876. It is found in North America. As a member of the weevil family, it possesses the characteristic elongated snout (rostrum) typical of Curculionidae. Specific ecological details about this species remain poorly documented in the available literature.
Nyssonotus seriatus
Nyssonotus seriatus is a species of true weevil in the beetle family Curculionidae. It was described by Thomas L. Casey in 1892. The species is known from North America. Very little detailed biological information has been published for this species.
Ochyromera ligustri
ligustrum weevil, Ligustrum Seed Weevil
Ochyromera ligustri is a small seed-feeding weevil (3.0–4.7 mm) in the family Curculionidae. Native to the Palearctic region, it was first detected in North America in North Carolina in 1959 and has since spread across the southeastern United States. The species specializes on Ligustrum species (privets), with adults feeding on foliage and fruits while larvae develop internally within seeds. Its narrow host specificity and seed-feeding habit have led to consideration as a fortuitous biological control agent against invasive privets.
Odontocorynus
flower weevils
Odontocorynus is a genus of flower weevils in the family Curculionidae, tribe Madarini. The genus was established by C.J. Schoenherr in 1844 and contains at least 80 described species, though species-level taxonomy remains incompletely resolved. Members are associated with flowers and are distributed primarily in the Americas. The genus is taxonomically placed within the subfamily Curculioninae.
Odontocorynus falsus
flower weevil
Odontocorynus falsus is a species of flower weevil in the beetle family Curculionidae, described by O'Brien and Wibmer in 1982. As a member of the genus Odontocorynus, it belongs to a group of weevils associated with flowers and floral resources. The species has been documented in North America, though specific ecological details remain limited.
Odontocorynus larvatus
flower weevil
Odontocorynus larvatus is a species of flower weevil in the family Curculionidae, first described by G.C. Champion in 1908. The species is known from North America and belongs to a genus associated with flowers and seed heads. Like other members of Curculionidae, it possesses the characteristic elongated rostrum (snout) typical of weevils. The species has been documented through a modest number of observations, suggesting it may be locally distributed or under-recorded.
Odontocorynus pulverulentus
flower weevil
Odontocorynus pulverulentus is a species of flower weevil in the beetle family Curculionidae, first described by Casey in 1892. The species is provisionally accepted in taxonomic databases and is recorded from North America. As a member of the genus Odontocorynus, it likely associates with flowers, though specific ecological details remain poorly documented.
Odontocorynus umbellae
Daisy Flower Weevil
A small flower-feeding weevil, 3–5 mm in length, with brown or black coloration. The species is distinguished by a rostrum that curves heavily at the base but becomes nearly straight near the apex. Adults are active during the growing season and feed on flowers of several plant families.
Odontopus
Odontopus is a genus of weevils (family Curculionidae) established by Say in 1832. The genus contains species associated with leaf-mining habits on host plants, with documented associations to Annona species (Annonaceae) and Pterygota alata. Species within this genus exhibit endophytic oviposition and larval development within leaf tissue. The genus has been reported from Brazil and India, though taxonomic records contain conflicting information about its composition and validity.
Odontopus calceatus
Yellow Poplar Weevil, Sassafras Mining Weevil, Tuliptree Leafminer, Tulip Tree Weevil, Magnolia Leaf Miner
A small weevil in the family Curculionidae, known for feeding on and mining the leaves of tulip tree (Liriodendron tulipifera), sassafras (Sassafras albidum), and magnolia species. Adults are most visible in spring when they emerge to feed on host foliage, causing distinctive notching damage along leaf edges. The species is widespread in eastern North America and occasionally reaches outbreak densities that cause noticeable defoliation.
Oligolochus bracatus
Oligolochus bracatus is a species of flower weevil in the family Curculionidae. The species was described by Casey in 1892. It is currently treated as a synonym of Limnobaris bracatus in some taxonomic databases. Very few observations exist in citizen science platforms.
Oligolochus ornatus
flower weevil
Oligolochus ornatus is a species of flower weevil in the beetle family Curculionidae. It was described by Casey in 1920 and is currently classified under the genus Oligolochus, though some taxonomic databases list it as a synonym of Anacentrus ornatus. As a member of the Curculionidae, it possesses the characteristic elongated snout (rostrum) typical of weevils. Very little specific biological information is available for this species.
Omias
Omias is a genus of broad-nosed weevils (Curculionidae) established by Germar in 1817. The genus comprises more than 50 described species, placing it among the more species-rich genera within the tribe Omiini. These weevils belong to the subfamily Entiminae, a diverse group of root-feeding weevils characterized by their short, broad rostrum and elbowed antennae. The genus has been documented across 368 iNaturalist observations, indicating moderate levels of citizen science engagement.
Omileus
Omileus is a genus of broad-nosed weevils in the family Curculionidae, established by Horn in 1876. The genus contains at least one described species, O. epicaeroides. Members of this genus belong to the subfamily Entiminae and tribe Geonemini, placing them among the root-feeding weevils with characteristically short, broad rostra.
Onychobaris
Onychobaris is a genus of flower weevils in the family Curculionidae, established by John Lawrence LeConte in 1876. The genus contains more than 40 described species distributed across North America. Members are associated with flowers and vegetation, though specific ecological details for most species remain poorly documented.
Onychobaris densa
flower weevil
Onychobaris densa is a species of flower weevil in the beetle family Curculionidae, first described by John Lawrence LeConte in 1876. It is a small weevil found in North America, though specific details about its biology and ecology remain poorly documented in the scientific literature. The genus Onychobaris belongs to the weevil family, one of the largest families of beetles, whose members are characterized by their distinctive elongated snouts.
Onychobaris depressa
Onychobaris depressa is a species of flower weevil in the beetle family Curculionidae. It was described by Thomas Lincoln Casey in 1892. The species is found in North America. As a member of the Curculionidae, it possesses the characteristic elongated snout (rostrum) typical of weevils. Beyond these basic taxonomic details, specific information about its biology, ecology, and distribution within North America remains poorly documented in available sources.
Onychobaris millepora
flower weevil
Onychobaris millepora is a species of flower weevil in the family Curculionidae. It was described by Thomas Lincoln Casey in 1892. The species is recorded from North America, though specific details about its biology remain poorly documented in published literature.
Onychobaris subtonsa
flower weevil
Onychobaris subtonsa is a species of flower weevil in the family Curculionidae, described by John Lawrence LeConte in 1876. The species is recorded from prairie provinces of central Canada, specifically Manitoba and Saskatchewan. As a member of the flower weevil group, it likely associates with flowering plants, though specific biological details remain poorly documented. The genus Onychobaris contains relatively obscure species with limited published research.
Onycholipini
Onycholipini is a tribe of weevils in the subfamily Cossoninae, established by Alonso-Zarazaga and Lyal in 1999. The tribe includes at least four genera—Dipnotyphlus, Hauseriola, Leipommata, and Onycholips—plus Halorhynchus, which was transferred from Pentarthrini. Members are specialized for fossorial and psammophilous (sand-dwelling) lifestyles, with adaptations including reduced or absent eyes, compact body form, and modified legs for burrowing. The tribe has a disjunct distribution across coastal regions of the Mediterranean, Macaronesia, Arabia, and Australasia, with some species exhibiting transoceanic dispersal capabilities.
Oodera
Oodera is the sole genus in the monotypic family Ooderidae, a group of chalcidoid wasps elevated to family rank in 2022. Species range from 3.6 to 17 mm and are distinguished by raptorial forelegs and a mantis-like habitus. Almost all species are parasitoids of xylophagous beetle larvae in families Buprestidae and Curculionidae. The genus occurs in warm regions of the Palearctic, Afrotropical, and Indomalayan realms, with one introduced species in the Nearctic.
Oomorphidius
Oomorphidius is a genus of flower weevils in the family Curculionidae, established by Thomas Lincoln Casey in 1892. The genus contains two described species: Oomorphidius erasus (LeConte, 1880) and Oomorphidius laevicollis (LeConte, 1876). Both species were originally described in other genera and later transferred to Oomorphidius. The genus is part of the diverse weevil fauna associated with flowers.
Oomorphidius erasus
flower weevil
Oomorphidius erasus is a species of flower weevil in the beetle family Curculionidae. The species was described by T.L. Casey in 1892. It is recorded from North America. Very little is known about its biology or ecology.
Oopterinus
antlike weevils
Oopterinus is a genus of antlike weevils in the family Curculionidae, containing approximately 12 described species. The genus was established by Thomas Lincoln Casey in 1892. Species in this genus are characterized by their ant-like appearance, a trait that distinguishes them from other weevil genera. The genus includes species described by multiple authors spanning from 1873 to 1985.
Oopterinus distinctus
Oopterinus distinctus is a species of weevil in the family Curculionidae, described by O'Brien in 1985. The species was initially known from only four counties in Arkansas at its discovery but has since been documented in additional counties in Arkansas as well as Louisiana and Alabama by 2016. As a member of the diverse Curculionidae family, it belongs to one of the largest groups of beetles, though specific ecological details remain limited.
Ophryastes
Ophryastes is a genus of broad-nosed weevils in the family Curculionidae, first described by Germar in 1829. The genus contains at least 30 described species and belongs to the tribe Ophryastini within the subfamily Entiminae. These weevils are part of the diverse group of root-feeding weevils characterized by their broad, short rostrums.
Ophryastes argentatus
silver broad-nosed weevil
Ophryastes argentatus is a species of broad-nosed weevil in the beetle family Curculionidae, first described by LeConte in 1853. The species is found in western North America, with records from California, Arizona, Nevada, Utah, and Baja California. The specific epithet 'argentatus' refers to the silvery appearance of the beetle. It belongs to the subfamily Entiminae, a group of weevils commonly known as broad-nosed weevils due to their relatively short, broad rostrums compared to other weevil groups.
Ophryastes cinerascens
broad-nosed weevil
Ophryastes cinerascens is a species of broad-nosed weevil in the beetle family Curculionidae, first described by Pierce in 1913. It belongs to the tribe Ophryastini within the subfamily Entiminae. The species is native to western North America, with documented occurrences in British Columbia, Oregon, and Washington. As a member of the broad-nosed weevil group, it possesses the characteristic elongated snout typical of the family Curculionidae.
Ophryastes desertus
Ophryastes desertus is a species of broad-nosed weevil in the beetle family Curculionidae. It is native to arid regions of southwestern North America. The species was described by Horn in 1876 and is classified within the subfamily Entiminae, tribe Ophryastini.
Ophryastes geminatus
broad-nosed weevil
Ophryastes geminatus is a species of broad-nosed weevil in the family Curculionidae. It belongs to the subfamily Entiminae, a group characterized by their broad, short rostrums. The species was described by Horn in 1876 and is known from western North America.
Ophryastes nivosus
Ophryastes nivosus is a species of broad-nosed weevil in the beetle family Curculionidae. It was described by Fall in 1910. The species belongs to the tribe Ophryastini within the subfamily Entiminae, a group commonly known as broad-nosed weevils.
Ophryastes ovalis
broad-nosed weevil
Ophryastes ovalis is a species of broad-nosed weevil in the family Curculionidae. The species was described by Pierce in 1910. It belongs to the subfamily Entiminae, a diverse group of weevils commonly known as broad-nosed weevils due to their relatively short, broad rostrum compared to other weevil groups.
Ophryastes ovipennis
Ophryastes ovipennis is a species of broad-nosed weevil in the family Curculionidae. It was described by Sharp in 1891. The species is known from North America, with distribution records from Kansas, New Mexico, Oklahoma, and Texas. As a member of the tribe Ophryastini, it belongs to a group of weevils characterized by their broad rostrum.
Ophryastes robustus
Ophryastes robustus is a species of broad-nosed weevil in the family Curculionidae. The species was described by Davis in 1947. It belongs to the subfamily Entiminae, a diverse group of weevils commonly known as broad-nosed or root weevils. Distribution records indicate presence in the southwestern United States and northwestern Mexico.
Ophryastes sordidus
Ophryastes sordidus is a species of broad-nosed weevil in the family Curculionidae, described by LeConte in 1853. It is found in North America. As a member of the subfamily Entiminae, it possesses the characteristic broad snout typical of this group. The genus Ophryastes contains multiple species of weevils distributed across western North America.
Ophryastes speciosus
broad-nosed weevil
Ophryastes speciosus is a broad-nosed weevil in the family Curculionidae, first described by LeConte in 1853. It belongs to the subfamily Entiminae and tribe Ophryastini. The species is distributed in southwestern North America, with confirmed records from New Mexico and Texas. As a member of the broad-nosed weevil group, it possesses the characteristic elongated rostrum typical of Curculionidae.
Ophryastes varius
broad-nosed weevil
Ophryastes varius is a species of broad-nosed weevil in the family Curculionidae, first described by John Lawrence LeConte in 1853. It belongs to the tribe Ophryastini within the subfamily Entiminae. The species has been recorded from western North America, with distribution records from Arizona, California, Idaho, Nevada, and Baja California.
Ophryastes vittatus
broad-nosed weevil
Ophryastes vittatus is a species of broad-nosed weevil first described by Thomas Say in 1824. The species belongs to the subfamily Entiminae, a group characterized by their broad, short rostrums compared to other weevils. It occurs in western and central North America, with records from Arizona, Colorado, Kansas, Nebraska, and Nevada. The specific epithet "vittatus" refers to a striped or banded appearance, though detailed descriptions of this pattern are limited in available sources.
Orchestes
flea weevils
Orchestes is a genus of flea weevils (Curculionidae) comprising six species in North America and additional species in Eurasia. Members are small beetles (2–4 mm) associated with woody host plants, particularly trees in Ulmaceae and Fagaceae. The genus was historically confused with Rhynchaenus, from which it has been redefined. Several species are significant pests: O. steppensis is a destructive invasive of elms in China and North America, O. alni (European elm flea weevil) damages elms in Europe and North America, and O. fagi attacks beech trees. Larval habits vary—most are leaf miners, though O. hustachei uniquely parasitizes aphid galls.
Orchestes andersoni
A weevil species in the genus Orchestes, described in 2004 by Alonso-Zarazaga. It belongs to the family Curculionidae, one of the largest families of beetles. Very little specific information has been published about this species beyond its taxonomic description.
Orchestes fagi
Beech leaf-mining weevil, beech leaf-miner beetle
Orchestes fagi is a small weevil species native to Europe that has become invasive in North America, where it attacks American beech (Fagus grandifolia). The larvae mine the leaves of beech trees, while adults undergo an extended diapause of eight to nine months, overwintering on tree boles. The species has spread through eastern Nova Scotia, Canada, with human-assisted transport via firewood and timber implicated in its range expansion.
Orchestes mixtus
Orchestes mixtus is a weevil species in the family Curculionidae, first described by Blatchley and Leng in 1916. The species is recorded from multiple Canadian provinces including Alberta, British Columbia, Manitoba, New Brunswick, and Nova Scotia. As a member of the genus Orchestes, it belongs to a group of small weevils commonly known as elm leaf weevils or flea weevils, many of which are associated with elm trees.
Orchestes pallicornis
Apple Flea Weevil, Apple Flea-weevil
Orchestes pallicornis, commonly known as the Apple Flea Weevil, is a weevil species in the family Curculionidae that has become a destructive agricultural pest of apple orchards. The species was extensively studied by the Illinois Natural History Survey and the Ohio Agricultural Experiment Station during the 1910s–1920s due to its significant economic impact. It has been documented as causing serious damage across large areas of Illinois and parts of Ohio. The species was first described by Thomas Say in 1832 and continues to be recognized as an accepted species in major taxonomic databases.
Orchestomerus
minute seed weevils
Orchestomerus is a genus of minute seed weevils in the family Curculionidae, established by W.G. Dietz in 1896. The genus comprises approximately 14 described species. These beetles are small weevils associated with seeds, though specific host relationships remain poorly documented for most species.
Orchestomerus eisemani
Orchestomerus eisemani is a species of weevil described in 2015 from the western United States. The species belongs to the genus Orchestomerus, a group of small weevils within the family Curculionidae. It has been documented in California and Oregon, primarily in association with coniferous forest habitats. The species was named in honor of entomologist Robert Eiseman.
Orchestomerus marionis
Orchestomerus marionis is a species of weevil in the family Curculionidae. The species is provisionally accepted in taxonomic databases. As a member of Orchestomerus, it belongs to a genus of small weevils within the superfamily Curculionoidea. Specific biological details for this species remain poorly documented in the available literature.
Orchestomerus wickhami
Orchestomerus wickhami is a species of weevil in the family Curculionidae, described by Dietz in 1896. The genus Orchestomerus belongs to the superfamily Curculionoidea. Very little specific biological or ecological information is documented for this particular species.