Weevil
Guides
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 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.
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.
Omiini
Omiini is a tribe of broad-nosed weevils within the subfamily Entiminae (Curculionidae). The tribe contains approximately 18 recognized genera, including Omias, Amicromias, and Rhinomias. Species in this tribe are primarily distributed across the Palearctic region, with notable diversity in the Mediterranean basin, including Greece and surrounding areas. The group has been subject to recent taxonomic revision, with new species descriptions continuing to expand known diversity.
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.
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.
Onychylis
marsh weevils
Onychylis is a genus of marsh weevils established by LeConte in 1876. The genus contains approximately 12 described species. These beetles are classified in the family Brachyceridae, though some sources place them in Erirhinidae. The genus is characterized by its association with marsh habitats.
Onychylis alternans
marsh weevil
Onychylis alternans is a species of marsh weevil in the beetle family Brachyceridae. It was described by LeConte in 1876 and occurs in North America. The species is provisionally accepted in current taxonomy.
Onychylis nigrirostris
pickerelweed weevil
Onychylis nigrirostris, commonly known as the pickerelweed weevil, is a marsh-dwelling weevil species first described by LeConte in 1876. It belongs to the family Brachyceridae (sometimes historically placed in Erirhinidae or Curculionidae in various taxonomic treatments). The species is associated with wetland habitats in eastern North America.
Onychylis parvulus
marsh weevil
Onychylis parvulus is a small marsh weevil in the family Brachyceridae, originally described by Burke in 1961. It is distributed across North America and is associated with wetland habitats. The species belongs to a genus of weevils typically found in moist environments near water bodies.
Onychylis texanus
Onychylis texanus is a species of weevil in the family Brachyceridae, described by Burke in 1959. The specific epithet 'texanus' indicates a likely association with Texas. Very little is known about this species; it belongs to a genus of small weevils within the Curculionoidea superfamily. The species is provisionally accepted in taxonomic databases, suggesting some uncertainty regarding its status or circumscription.
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 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 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.
Ophryastini
Ophryastini is a tribe of broad-nosed weevils (subfamily Entiminae) comprising approximately 90 species across 4 extant genera and one extinct genus. The tribe was established by Lacordaire in 1863 and has a disjunct distribution spanning North America, Asia, and Europe. Members of this tribe are characterized by their broad snouts and root-feeding habits typical of Entiminae.
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 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 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.
Orimodema
broad-nosed weevils
Orimodema is a monotypic genus of broad-nosed weevils in the family Curculionidae, containing a single described species, O. protracta. The genus was established by Horn in 1876 and is classified within the tribe Byrsopagini of subfamily Entiminae. Observations are concentrated in Mexico and the United States.
Orthochaetes
Orthochaetes is a genus of weevils in the family Curculionidae, tribe Styphlini, established by Germar in 1823. The genus has Palearctic origins, with at least one species, Orthochaetes setiger, documented as an adventive introduction to North America. Records from Canada indicate establishment in Newfoundland and British Columbia. The genus is characterized by morphological features distinguishing it from other Styphlini genera, requiring modified identification keys for North American fauna.
Orthognathus subparallelus
Orthognathus subparallelus is a species of weevil in the family Dryophthoridae, described by G.C. Champion in 1910. It has been documented in Central America and North America, with specific records from Brazil (Mato Grosso and Pará) and Middle America. The species is known from 18 iNaturalist observations and appears in mosquito surveillance bycatch studies, indicating it may be attracted to light or CO2-baited traps.
Orthoptochus
Orthoptochus is a genus of broad-nosed weevils (Curculionidae: Entiminae: Peritelini) established by Casey in 1888. The genus contains at least one described species, O. squamiger. As a member of the Entiminae subfamily, adults are characterized by their rounded, short snouts rather than the elongated rostra typical of many other weevil groups. The genus is rarely encountered in collections and observations, with minimal documented information about its biology.
Orthoptochus squamiger
Orthoptochus squamiger is a species of broad-nosed weevil in the family Curculionidae, subfamily Entiminae. First described by Casey in 1888, this species is known from a very limited number of observations and museum records. It belongs to the tribe Peritelini, a group of weevils primarily associated with woody plants. The species appears to be restricted to the southwestern United States and adjacent Mexico.
Orthoris crotchii
Orthoris crotchii is a weevil species described by John Lawrence LeConte in 1876. It is currently classified as an ambiguous synonym of Rhoptobaris scolopax (Fabricius, 1792). The species has been documented in western Canada, with records from Alberta, British Columbia, and Saskatchewan. As a member of Curculionidae, it belongs to one of the most diverse families of beetles, though specific biological details for this particular taxon remain poorly documented.
Otiorhynchini
Otiorhynchini is a tribe of true weevils within the subfamily Entiminae, family Curculionidae. The tribe was established by Schönherr in 1826 and contains approximately 24 extant genera, including the large and economically significant genus Otiorhynchus. Members of this tribe are part of the broad-nosed weevil group, characterized by their relatively short, broad rostrums compared to other weevil lineages. The tribe includes both extant and fossil genera, with two extinct genera known from the fossil record.
Otiorhynchus ligneus
Otiorhynchus ligneus is a broad-nosed weevil in the family Curculionidae, first described by Olivier in 1807. It is native to eastern Canada, with records from New Brunswick, Newfoundland and Labrador, Nova Scotia, Prince Edward Island, and Québec. The species belongs to a large genus of root-feeding weevils, many of which are economically significant pests.
Otiorhynchus raucus
Otiorhynchus raucus is a broad-nosed weevil in the family Curculionidae, first described by Fabricius in 1777. It is a member of the large genus Otiorhynchus, which contains numerous root-feeding weevil species. The species has been recorded across parts of North America and Eurasia, with over 2,000 observations documented on iNaturalist. A former subspecies, O. r. silvicola, described from forest habitats in 1993, is now treated as a synonym.
Otiorhynchus rugifrons
Strawberry Root Weevil
Otiorhynchus rugifrons is a weevil species in the family Curculionidae, commonly known as the Strawberry Root Weevil. It is part of a large genus of root-feeding weevils, many of which are significant agricultural pests. The species has been documented across parts of North America and northern Europe. Like other Otiorhynchus species, adults are flightless and nocturnal.
Ozotomerus
Ozotomerus is a genus of fungus weevils in the family Anthribidae, established by Perroud in 1853. Members of this genus are small to medium-sized beetles characterized by their distinctive elongated snout and association with fungal substrates. The genus is distributed across various regions with documented observations primarily from the Americas. As with other anthribids, species in this genus are likely mycophagous, feeding on fungal growth on decaying wood and plant material.
Pachybaris porosa
flower weevil
Pachybaris porosa is a species of flower weevil in the family Curculionidae. It was described by John Lawrence LeConte in 1876. The species is known from North America. As a member of the flower weevil group, it is associated with floral habitats, though specific ecological details remain limited.
Pachyrhinus californicus
rusty pineneedle weevil
Pachyrhinus californicus, commonly known as the rusty pineneedle weevil, is a species of broad-nosed weevil in the beetle family Curculionidae. It was first described by Horn in 1876. The species is found in western North America, with records from British Columbia, California, Oregon, and Washington. As a member of the genus Pachyrhinus, it belongs to a group of weevils associated with coniferous habitats.