Curculionidae
Guides
Mogulones crucifer
Molytinae
Molytinae is a large and diverse subfamily of weevils (Curculionidae) described by Carl Johan Schönherr in 1823. The subfamily contains numerous tribes and genera distributed worldwide, with particularly high diversity in tropical and subtropical regions. Many Molytinae species are associated with specific host plants, including conifers, oaks, and various flowering plants. Some species are economically important as pests of forestry and agricultural crops, while others are restricted to specialized habitats such as leaf litter, caves, or high-elevation ecosystems. The subfamily has undergone significant taxonomic revision in recent decades, with many new species described particularly from Central America, Africa, and Asia.
Monarthrum huachucae
A small weevil species in the family Curculionidae, described by Wood in 1959. The specific epithet 'huachucae' refers to the Huachuca Mountains of southeastern Arizona, suggesting a geographic association with this Sky Island region. Like other members of the genus Monarthrum, this species is likely associated with woody vegetation, though specific ecological details remain poorly documented.
Monarthrum mali
apple wood stainer
Monarthrum mali, commonly known as the apple wood stainer, is a bark beetle species in the family Curculionidae. It is recognized as a pest of apple trees, where it causes distinctive staining of wood tissue. The species has been documented in North America, including Canada and the Caribbean region.
Myctides
Myctides is a genus of weevils (family Curculionidae) established by Francis Polkinghorne Pascoe in 1874. The genus is part of the hyperdiverse Curculionidae, the largest family of beetles. Based on iNaturalist records, at least 49 observations of this genus have been documented, though specific ecological and biological details remain limited in publicly available sources.
Myllocerus
oriental broad-nosed weevils, ash weevils, grey weevils, Sri Lankan weevils
Myllocerus is a large genus of oriental broad-nosed weevils in the family Curculionidae, comprising at least 330 described species. Species within this genus are predominantly distributed across the Indian subcontinent and surrounding regions, with several species recognized as significant agricultural pests. Notable pest species include Myllocerus undecimpustulatus undatus (Sri Lankan weevil), M. maculosus (cotton grey weevil), and M. viridanus (ash weevil), which attack diverse crop plants including cereals, legumes, vegetables, and fruit trees. The genus exhibits typical weevil morphology with broad rostrums and root-feeding larval stages combined with foliage-feeding adults.
Myllocerus undecimpustulatus undatus
Sri Lankan weevil
Myllocerus undecimpustulatus undatus, the Sri Lankan weevil, is a polyphagous curculionid pest native to Sri Lanka that has spread to India, Pakistan, and the United States. It was first identified in Florida in 2000 on Citrus species and has since established populations in the state. The species exhibits sexual dimorphism with females typically larger than males. Research has documented its cold tolerance limitations, mating behavior involving female abdominal rocking and prolonged copulatory guarding, and susceptibility to certain biopesticides.
Myoplatypus flavicornis
Myoplatypus flavicornis is a species of weevil in the family Curculionidae, first described by Fabricius in 1777. The species was originally placed in the genus Bostrichus and has also been referred to under the genus Brachyelatus. It belongs to the large and diverse group of true weevils characterized by their elongated snouts.
Myrmex
snout and bark beetles
Myrmex is a genus of snout and bark beetles in the family Curculionidae, containing at least 30 described species. These beetles are characterized by the distinctive elongated snout typical of weevils. The genus was established by J. Sturm in 1826. Members of this genus are part of the diverse Curculionidae family, which is one of the largest families of beetles.
Myrmex arizonicus
Arizona antlike weevil
Myrmex arizonicus is a species of antlike weevil in the beetle family Curculionidae, native to North America. The genus Myrmex is characterized by weevils that exhibit ant-mimicry in their morphology and behavior. This species was first described by Schaeffer in 1907. As with other members of the genus, it likely occupies habitats where ant mimicry provides selective advantage, though specific ecological details remain poorly documented.
Myrmex basalis
antlike weevil
Myrmex basalis is a species of antlike weevil in the family Curculionidae. The species was described by Schaeffer in 1907 and is currently classified under the genus Myrmex, though it was previously placed in Otidocephalus. Very little is known about its biology or distribution beyond basic taxonomic records.
Myrmex carinicollis
antlike weevil
Myrmex carinicollis is a species of antlike weevil in the beetle family Curculionidae, described by Horn in 1895. The genus Myrmex comprises ant-mimicking weevils characterized by their compact body form and reduced rostrum that gives them a superficial resemblance to ants. This species is found in North America, though specific details about its biology and ecology remain poorly documented in the available literature.
Myrmex chevrolatii
Chevrolat's Myrmex Weevil
Myrmex chevrolatii is a species of antlike weevil in the beetle family Curculionidae. The species is characterized by its ant-mimicking appearance, a trait common to members of the genus Myrmex. It is found in North America. The genus name Myrmex derives from the Greek word for ant, reflecting this morphological resemblance.
Myrmex estriatus
Myrmex estriatus is a species of antlike weevil in the beetle family Curculionidae. The species was originally described by Casey in 1892 and is currently listed as a synonym of Otidocephalus estriatus in some taxonomic databases. Very few observations of this species exist in biodiversity databases. As a member of the antlike weevil genus Myrmex, it likely exhibits morphological adaptations resembling ants, though specific ecological details remain undocumented.
Myrmex floridanus
antlike weevil, Florida antlike weevil
Myrmex floridanus is a species of antlike weevil in the family Curculionidae, characterized by morphological adaptations that mimic ants. The species was described by Casey in 1892 and is currently treated as a synonym of Otidocephalus floridanus in some taxonomic databases. It occurs in North America, with records primarily from the southeastern United States. The genus Myrmex belongs to the tribe Myrmecini, a group of weevils known for their ant-mimicking appearance.
Myrmex horni
antlike weevil
Myrmex horni is a species of antlike weevil in the beetle family Curculionidae, described by Sleeper in 1954. The genus Myrmex comprises weevils that exhibit ant-mimicking morphology, a form of protective resemblance that helps them avoid predation. The species is known from North America, though specific details about its biology and ecology remain poorly documented.
Myrmex insignis
antlike weevil
Myrmex insignis is a species of ant-mimicking weevil in the family Curculionidae. The species exhibits morphological adaptations resembling ants, a form of protective mimicry common in the genus. It is recorded from North America, though specific details regarding its biology and ecology remain limited in published literature.
Myrmex knulli
antlike weevil
Myrmex knulli is a species of antlike weevil in the beetle family Curculionidae. It was described by Sleeper in 1954. The species is found in North America and includes two recognized subspecies: Myrmex knulli chiricahuae and Myrmex knulli knulli. Like other members of the genus Myrmex, it exhibits morphological adaptations resembling ants, a form of mimicry common in this weevil group.
Myrmex lineatus
Antlike weevil
Myrmex lineatus is a species of ant-mimicking weevil in the family Curculionidae. It is native to North America and is recognized for its ant-like appearance, which likely serves as protective mimicry. The species was described by Pascoe in 1872 and includes two recognized subspecies: Myrmex lineatus knowltoni and Myrmex lineatus lineatus.
Myrmex myrmex
antlike weevil
Myrmex myrmex is a species of antlike weevil in the beetle family Curculionidae. It develops in dead and dying American sycamore wood. The species is found in North America.
Myrmex ruficornis
antlike weevil
Myrmex ruficornis is a species of antlike weevil in the beetle family Curculionidae. The genus Myrmex is characterized by its ant-mimicking morphology, with species exhibiting body forms and behaviors that resemble ants. The specific epithet ruficornis refers to the reddish coloration of the antennae. This species was described by Casey in 1892 and is currently treated as a synonym of Otidocephalus ruficornis in some taxonomic databases.
Myrmex scrobicollis
antlike weevil
Myrmex scrobicollis is a species of antlike weevil in the beetle family Curculionidae. The genus Myrmex comprises weevils with elongated, ant-mimicking body forms. This species occurs in North America. The common name "antlike weevil" refers to morphological resemblance to ants, though the specific adaptive significance of this mimicry in M. scrobicollis has not been documented.
Myrmex subglaber
antlike weevil
Myrmex subglaber is a species of ant-mimicking weevil in the family Curculionidae. The species was originally described by Schaeffer in 1907 under the genus Otidocephalus, and is currently classified under Myrmex. Like other members of this genus, it exhibits morphological adaptations resembling ants, a form of protective mimicry common in this weevil lineage. The species is native to North America.
Myrmex texanus
antlike weevil
Myrmex texanus is a species of antlike weevil in the beetle family Curculionidae. It is native to North America. The species is characterized by its ant-mimicking appearance, a common trait in the genus Myrmex. Very little specific information is available about its biology or ecology.
Myrmex undescribed-one
Myrmex undescribed-one is an uncharacterized species within the ant-loving weevil genus Myrmex (Curculionidae: Myrmecophilinae). Species in this genus are obligate myrmecophiles, meaning they live in association with ant colonies. The specific identity and biological details of this undescribed taxon remain undocumented in the available literature.
Myrmex vandykei
Myrmex vandykei is a species of antlike weevil in the family Curculionidae, described by Sleeper in 1970. The species is found in North America. Like other members of the genus Myrmex, it exhibits morphological adaptations that give it a superficial resemblance to ants, a form of protective mimicry. The specific epithet honors the entomologist Edwin C. Van Dyke.
Nanops
Nanops is a genus of weevils in the family Curculionidae, established by W.G. Dietz in 1891. It belongs to the superfamily Curculionoidea within the suborder Polyphaga. The genus is poorly documented in public sources, with minimal information available regarding its constituent species, ecology, or morphology.
Nanops schwarzi
Nanops schwarzi is a species of minute weevil in the family Curculionidae, first described by Dietz in 1891. It is provisionally accepted in taxonomic databases and has been recorded from North America. The genus Nanops comprises exceptionally small weevils, with adults often measuring less than 2 mm in length. Very little is known about the specific biology or ecology of this species.
Narberdia
Narberdia is a genus of true weevils in the family Curculionidae, tribe Anthonomini. The genus was monotypic when described by Burke in 1976 from the United States, but expanded to at least five species following descriptions of four additional species from México and Costa Rica in 2017. All species are intimately associated with plants of the genus Bernardia (Euphorbiaceae). Sexual dimorphism is pronounced, with females possessing a longer, more slender rostrum and a distinctive tibial tooth absent in males.
Narberdia aridulus
Narberdia aridulus is a species of true weevil in the beetle family Curculionidae, described by Burke in 1976. It belongs to a genus within the diverse weevil family, which is one of the largest families of beetles. The species is known to occur in North America. Available information on this species is limited, with only one observation recorded on iNaturalist.
Naupactus
White-fringed Weevils
Naupactus is a large genus of weevils in the family Curculionidae, commonly known as white-fringed weevils. The genus comprises exclusively Neotropical species, several of which have been introduced to other regions and become significant agricultural pests. Members of this genus are characterized by reduced humeri and lack of metathoracic wings, traits formerly used to separate them into the genus Graphognathus before taxonomic revision. Some species exhibit parthenogenetic reproduction, and flightless adults are common.
Naupactus leucoloma
white-fringed weevil, white-fringed beetle
Naupactus leucoloma is a broad-nosed weevil native to South America that has become a globally distributed agricultural pest. Adults are flightless, parthenogenetic females outside their native range, with males occurring only rarely in Argentina, Uruguay, and southern Brazil. The species is notable for its extreme polyphagy, having been documented feeding on over 385 plant species. Larval root-feeding causes substantially more economic damage than adult folivory.
Naupactus pallidulus
Naupactus pallidulus is a species of broad-nosed weevil in the family Curculionidae. It belongs to a large genus of exclusively Neotropical weevils commonly known as "white-fringed weevils." The genus Naupactus has undergone taxonomic revision, with former genera such as Graphognathus now synonymized under it. Many Naupactus species have become economically significant as agricultural pests, with several introduced to North America and other regions.
Naupactus pallidus
Naupactus pallidus is a species of broad-nosed weevil in the family Curculionidae, subfamily Entiminae. It belongs to the diverse Neotropical genus Naupactus, commonly known as white-fringed weevils. Species in this genus are characterized by their elongated bodies, distinct rostrums, and often pale or whitish markings on the elytra. Many Naupactus species have become agricultural pests, with some introduced to North America.
Naupactus peregrinus
Naupactus peregrinus is a species of broad-nosed weevil in the family Curculionidae, subfamily Entiminae. It belongs to the large Neotropical genus Naupactus, commonly known as "white-fringed weevils." The species has been recorded from the southeastern United States (Alabama, Arkansas, Florida) and parts of South America (Chaco, Entre Ríos in Argentina). Like other members of its genus, it is likely associated with vegetation and may have been introduced to some regions, though specific ecological details remain poorly documented.
Nedyus
minute seed weevils
Nedyus is a genus of minute seed weevils in the family Curculionidae, established by Carl Johan Schoenherr in 1825. The genus contains more than 50 described species. These beetles are small and associated with seeds as their common name suggests. Records indicate presence in northern Europe including Denmark, Norway, and Sweden.
Nedyus apicalis
Pointed Minute Seed Weevil
Nedyus apicalis is a small weevil in the family Curculionidae, commonly known as the Pointed Minute Seed Weevil. The species was described by O'Brien and Wibmer in 1982. It belongs to the genus Nedyus, which comprises minute seed-feeding weevils. The species has been documented across several Canadian provinces.
Neobagous texanus
Neobagous texanus is a species of weevil in the family Curculionidae, subfamily Bagoinae. The genus Neobagous belongs to a group of aquatic or semi-aquatic weevils commonly associated with wetland habitats. This species is named for Texas, indicating its described type locality or primary distribution center. Members of this genus are typically small, elongate weevils with adaptations for life in moist environments.
Neochetina
water hyacinth weevil, waterhyacinth weevils
Neochetina is a genus of weevils native to South America, comprising at least two species: N. eichhorniae (mottled water hyacinth weevil) and N. bruchi (chevroned water hyacinth weevil). Both species are highly host-specific biological control agents used worldwide to manage invasive water hyacinth (Eichhornia crassipes). The genus has been introduced to over 30 countries including the United States, where releases began in Florida in 1972 (N. eichhorniae) and 1974 (N. bruchi).
Neochetina bruchi
chevroned water hyacinth weevil, chevroned waterhyacinth weevil
Neochetina bruchi is a South American marsh weevil introduced to over 30 countries as a biological control agent for invasive water hyacinth (Pontederia crassipes, formerly Eichhornia crassipes). First released in the United States in Florida in 1974, it now occurs throughout the Gulf Coast states and California. The species has been studied extensively for its effectiveness in managing water hyacinth infestations, with research showing its performance varies with environmental factors including salinity, temperature, and nutrient availability.
Neochetina eichhorniae
Mottled Waterhyacinth Weevil, Mottled Water Hyacinth Weevil
Neochetina eichhorniae is a host-specific weevil native to Argentina and neighboring South American regions. It was introduced to Florida in 1972 as a biological control agent for the invasive aquatic weed water hyacinth (Eichhornia crassipes) and has since been established in more than three dozen countries worldwide. Adults feed on leaves and petioles, producing characteristic feeding scars, while larvae tunnel into petioles and the plant crown. The species has demonstrated substantial suppression of water hyacinth growth, reducing biomass, flower production, and water surface coverage.
Neoerethistes
Neoerethistes is a genus of true weevils in the family Curculionidae containing more than 30 described species. The genus was renamed from Erethistes in 1982 to avoid homonymy with a genus of South Asian river catfishes. The sole North American representative north of Mexico is N. arizonicus, which occurs in the southwestern United States.
Neoerethistes arizonicus
Neoerethistes arizonicus is a species of weevil in the family Curculionidae, described by Sleeper in 1954. The specific epithet "arizonicus" indicates its association with Arizona. Very little published information exists regarding this species beyond its original description and taxonomic placement. The genus Neoerethistes is poorly documented in the literature, with most species known only from type specimens and scattered collection records.
Neohydronomus affinis
Waterlettuce Weevil
Neohydronomus affinis is a subaquatic weevil native to South and Central America that has been deployed as a biological control agent against the invasive aquatic plant waterlettuce (Pistia stratiotes). First introduced to Florida in 1987, it has successfully established populations in peninsular Florida and Louisiana. The weevil's exoskeleton is covered in white scales and lacks water-resistant features, an unusual trait for an insect living in aquatic environments.
Neomastix
Neomastix is a genus of true weevils (Curculionidae) established by W.G. Dietz in 1891. It is native to the Nearctic realm. The type species, N. solidaginis, is the only described species currently recognized in the genus. The genus is rarely encountered, with minimal observational records.
Neomastix solidaginis
Neomastix solidaginis is a weevil species in the family Curculionidae, described by Dietz in 1891. The specific epithet "solidaginis" indicates an association with goldenrod plants (Solidago). The genus Neomastix belongs to the weevil superfamily Curculionoidea. Very little published information exists on the biology or ecology of this particular species.
Neophytobius
minute seed weevils
Neophytobius is a genus of minute seed weevils in the beetle family Curculionidae, established by H. Wagner in 1936. The genus contains at least two described species: Neophytobius cavifrons and Neophytobius muricatus. These are small beetles associated with seed feeding habits, typical of many Curculionidae.
Neophytobius cavifrons
minute seed weevil
Neophytobius cavifrons is a species of minute seed weevil in the beetle family Curculionidae, first described by Colonnelli in 1980. It is found in North America, with records from Alberta and British Columbia in Canada. As a member of the genus Neophytobius, it belongs to a group of small weevils associated with seeds. The species is known from only a handful of observations, indicating it is rarely encountered or poorly sampled.
Nicentrus
Nicentrus is a genus of flower weevils in the beetle family Curculionidae, established by Thomas Lincoln Casey in 1892. The genus comprises more than 90 described species, placing it among the more diverse weevil genera. Members of this genus are associated with flowering plants, reflecting their common name. The genus is part of the enormous weevil family Curculionidae, the largest family of beetles.
Nicentrus lecontei
Leconte's flower weevil
Nicentrus lecontei is a species of flower weevil in the beetle family Curculionidae, described by Casey in 1920. The genus Nicentrus belongs to the weevil family, a large group of beetles characterized by their distinctive elongated snouts. This species is known from North America, though specific details about its biology remain limited in published literature.