Weevil
Guides
Anthonomus squamosus
Anthonomus squamosus is a species of true weevil in the family Curculionidae. It was described by J.L. LeConte in 1876. The species belongs to a species group characterized by distinctive scale patterns on the rostrum and body. It is native to North America.
Anthonomus suturalis
Sutured Weevil
Anthonomus suturalis is a species of true weevil in the family Curculionidae. It is found in North America, with records from Canada (British Columbia, Ontario, Québec) and the United States. The species was described by John LeConte in 1824. As a member of the large genus Anthonomus, it shares the characteristic elongated snout and compact body form typical of weevils in this group.
Anthonomus testaceosquamosus
hibiscus bud weevil
Anthonomus testaceosquamosus, commonly known as the hibiscus bud weevil, is a small curculionid weevil native to northeastern Mexico and southern Texas. The species was first detected as an invasive pest in south Florida in May 2017, where it infests China rose hibiscus (Hibiscus rosa-sinensis) in ornamental production systems. It has three larval instars and completes its life cycle only at 27±1°C. The species is now regulated in Florida due to significant economic damage to the hibiscus industry.
Anthonomus texanus
Anthonomus texanus is a species of true weevil in the family Curculionidae, described by Dietz in 1891. It is native to North America. Like other members of the genus Anthonomus, it is likely associated with plants, though specific host relationships and ecological details remain poorly documented. The species is represented by very few observations in biodiversity databases, indicating it is either genuinely rare, undercollected, or restricted in distribution.
Anthonomus xanthoxyli
Colima Anthonomine Weevil
Anthonomus xanthoxyli is a species of true weevil in the family Curculionidae, described by Linell in 1897. It is known from North America. The common name 'Colima Anthonomine Weevil' suggests a possible association with the genus Xanthoxylum (prickly ash), though this relationship remains undocumented in the available sources. As with other Anthonomus species, it likely exhibits the characteristic elongated snout and compact body form typical of flower weevils.
Anypotactini
Anypotactini is a Neotropical weevil tribe in the subfamily Entiminae, comprising 81 described species across 13 genera. The tribe is characterized by small body size and distinctive scale coverage. Its modern distribution spans from the southwestern United States to southern South America, with the highest diversity in Central America and northern South America. The tribe has also been documented from Eocene deposits in Europe, indicating a broader historical distribution during warmer climatic periods.
Aphanommata
Aphanommata is a genus of weevils (Coleoptera: Curculionidae: Cossoninae) endemic to the Cape Verde archipelago in the Old World. The genus was erected by Wollaston in 1873 and currently includes three species from Cape Verde: A. euphorbiarum (Santo Antão), A. kuscheli (São Nicolau), and A. strakai (Fogo). A fourth species, A. filum, occurs elsewhere in the Old World. The genus has been subject to recent taxonomic revision including descriptions of larval morphology and analysis of vertical and inter-insular distribution patterns.
Aphrastus
Aphrastus is a genus of broad-nosed weevils (Entiminae) established by Thomas Say in 1831. The genus contains five described species distributed across North America and Mexico. These weevils are placed in the tribe Phyllobiini within the family Curculionidae. The genus is represented by 589 iNaturalist observations, indicating moderate documentation of its occurrence in the field.
Aphrastus griseus
Aphrastus griseus is a species of broad-nosed weevil in the family Curculionidae, described by Blatchley in 1916. It belongs to the tribe Phyllobiini within the subfamily Entiminae. The species is documented from the southeastern United States, with records from Florida, Georgia, and Indiana. Like other members of its genus, it is likely associated with woody vegetation, though specific host plant relationships remain poorly documented.
Apinocis
Sugarcane rootstock weevil
Apinocis is a genus of weevils in the family Curculionidae, established by Lea in 1927. The best-known species is Apinocis deplanatus, commonly called the sugarcane rootstock weevil, which sporadically infests sorghum and sugarcane. Adults are small, dark beetles that overwinter in plant debris and migrate from wild grasses to cultivated crops. Larvae tunnel into stalk bases, causing lodging and secondary pathogen infection.
Apinocis punctiger
Apinocis punctiger is a species of weevil in the family Curculionidae. The genus Apinocis is closely related to Anacentrinus, with some sources treating them as synonymous. No specific information about this species' biology, distribution, or ecology has been documented in available literature. The genus is known to include species associated with grasses and sedges.
Apinocis validulus
Apinocis validulus is a species of weevil in the family Curculionidae. The genus Apinocis includes species associated with grasses, with the sugarcane rootstock weevil (Apinocis deplanatus) being a documented pest of sorghum in Texas. Specific information about A. validulus is extremely limited in available sources.
Apion
Apion is a genus of small weevils in the family Brentidae, historically classified in Apionidae. The genus was established by Johann Friedrich Wilhelm Herbst in 1797. Species in this genus are associated with various host plants, with some exhibiting narrow host specificity. The genus has been involved in notable nomenclatural complications, particularly regarding the name Eurhinus which was originally applied to a different apionine genus by Kirby in 1819 before being transferred to the baridine genus Eurhin.
Apion carrorum
Apion carrorum is a species of minute seed weevil in the family Apionidae, described by Anderson and Alonso-Zarazaga in 2019. The genus Apion belongs to the weevil superfamily Curculionoidea, with members typically characterized by their small size and association with specific host plants. As a recently described species, detailed biological information remains limited.
Apioninae
Pear-shaped Weevils, Seed Weevils, Clover Weevils
Apioninae is a subfamily of small weevils within the family Brentidae, commonly known as pear-shaped weevils, seed weevils, or clover weevils. The subfamily contains at least 20 genera and approximately 80 described species, though diversity is likely higher. Members are characterized by their compact, pear-shaped body form and elongated rostrum. All species are phytophagous, with many exhibiting specialized associations with particular host plant families, particularly Fabaceae, Asteraceae, Malvaceae, and Polygonaceae. Some species are significant agricultural pests of legumes and jute, while others have been employed as biological control agents for invasive plants.
Apionini
Apionini is a tribe of small weevils within the subfamily Apioninae of the family Brentidae. Members are characterized by their compact body form and association with flowering plants, particularly in the legume family Fabaceae. The tribe exhibits ancient co-diversification patterns with angiosperms, with some subtribes such as Oxystomatina showing specialized host relationships. Brazilian representatives include genera such as Pygidiapion and Coelocephalapion, which develop in flower buds, seeds, or induce leaf galls on specific host plants.
Apionion
Apionion is a genus of weevils in the family Brentidae, established by Kissinger in 1998. The genus is known from Central America, with two described species from Dominican amber: Apionion formoculus and Apionion formosus, both described by Poinar & Legalov in 2015. These are fossil species preserved in amber, indicating the genus has existed since at least the Miocene.
Apionion crassum
Apionion crassum is a species of weevil in the family Curculionidae, subfamily Apioninae. Members of this genus are associated with leguminous plants. The species is characterized by a relatively robust body form compared to congeners.
Apleurus jacobinus
Apleurus jacobinus is a species of cylindrical weevil in the family Curculionidae, described by Anderson in 1987. It is known from North America. Information regarding its biology, ecology, and detailed morphology remains limited in published literature.
Apleurus lutulentus
Apleurus lutulentus is a species of cylindrical weevil in the family Curculionidae. It was described by Anderson in 1987. The species is known from North America. Like other members of its genus, it belongs to a group of weevils characterized by their elongated, cylindrical body form.
Apleurus saginatus
Apleurus saginatus is a cylindrical weevil in the family Curculionidae, described by Anderson in 1987. It is known from North America, though specific details about its biology remain poorly documented. The species belongs to a genus of weevils characterized by their elongated, cylindrical body form.
Apotrepus densicollis
Apotrepus densicollis is a species of true weevil in the family Curculionidae, first described by Casey in 1892. It is found in North America and has been documented in association with dead saguaro cactus. The species belongs to a genus with limited published ecological information.
Apteromechus
hidden snout weevils
Apteromechus is a genus of weevils in the family Curculionidae, commonly referred to as hidden snout weevils. The genus was described by J. Faust in 1896 and contains more than 20 described species. Members belong to the subfamily Cryptorhynchinae, a group characterized by their ability to fold their rostrum into a ventral groove. The genus is part of the diverse weevil fauna found across various regions.
Apteromechus texanus
Apteromechus texanus is a species of hidden snout weevil in the beetle family Curculionidae, described by Fall in 1925. The species is found in North America and is part of the genus Apteromechus, which comprises weevils with reduced or absent wings (apterous condition). Very little specific information has been published about this species beyond its original description and basic distribution records.
Aracanthus
Aracanthus is a genus of broad-nosed weevils in the beetle family Curculionidae, established by Thomas Say in 1831. The genus comprises nine described species distributed primarily in South America. These weevils belong to the subfamily Entiminae and tribe Eudiagogini. The genus includes Aracanthus pallidus, one of the earliest described species originally placed in a different genus by Say.
Aracanthus pallidus
pale broad-nosed weevil
Aracanthus pallidus is a species of broad-nosed weevil in the beetle family Curculionidae. It was described by Thomas Say in 1831. The species is found in North America, with distribution records from Arkansas, Illinois, Iowa, Kentucky, and Mississippi. As a member of the Entiminae subfamily, it possesses the characteristic short, broad rostrum typical of broad-nosed weevils.
Araecerus
coffee bean weevil (A. fasciculatus)
Araecerus is a genus of fungus weevils in the family Anthribidae, containing several species including the economically significant coffee bean weevil. The genus includes both described species and multiple undescribed species discovered in Papua New Guinea. Species within this genus are primarily associated with seeds and fruits, with some exhibiting broad polyphagy on stored agricultural products.
Aramigus tessellatus
Aramigus tessellatus is a species of broad-nosed weevil in the family Curculionidae, subfamily Entiminae. The species was originally described by Thomas Say in 1824 under the basionym Liparus tessellatus. It belongs to the tribe Naupactini, a group of weevils primarily distributed in the Americas. Distribution records indicate presence in Argentina, Brazil, and Chile, suggesting a South American range. As with many entimine weevils, adults likely feed on plant foliage, though specific host associations for this species remain poorly documented.
Archarius
Archarius is a genus of weevils in the family Curculionidae, first described by Gistel in 1856. Species within this genus are distributed across Europe, Japan, and North America. The genus includes at least three recognized species: Archarius crux, Archarius pyrrhoceras, and Archarius salicivorus. It belongs to the suborder Polyphaga within the diverse beetle order Coleoptera.
Archarius salicivorus
Archarius salicivorus is a species of weevil in the family Curculionidae, first described by Paykull in 1792. The specific epithet 'salicivorus' indicates an association with willow (Salix). It is native to Europe and has been recorded in Belgium.
Artipus floridanus
little leaf notcher
Artipus floridanus, commonly known as the little leaf notcher, is a broad-nosed weevil in the family Curculionidae. It is native to North America, with documented occurrence in Florida and association with citrus groves and weed hosts. The species has been studied for its distribution patterns on cultivated and wild host plants, and laboratory rearing methods have been developed for biological study. It serves as a host for the tachinid parasitoid Oestrophasia (Cenosoma) sabroskyi.
Aspidapion
Aspidapion is a genus of small weevils in the family Brentidae (subfamily Apioninae), distributed across the Palaearctic region including Europe, North Africa, and Western Asia. The genus contains approximately seven recognized species, with A. aeneum being the largest British representative at 2.9–3.6 mm. Species are associated with Malvaceae host plants, with larvae developing inside living plant stems. The genus is distinguished from the related Pseudaspidapion by morphological characteristics of immature stages.
Atractomerus
Atractomerus is a genus of weevils (Curculionidae) established by Schoenherr in 1833. At least one species, A. pitangae, has been documented as a seed predator of Eugenia involucrata (Rio Grande Cherry) in southern Brazil, causing significant damage to seeds and reducing their viability for propagation. The genus belongs to the hyperdiverse family Curculionidae, though detailed biological information for most species remains limited.
Aulacobaris
Aulacobaris is a genus of weevils in the family Curculionidae. The genus includes species associated with plants in the Brassicaceae family. Aulacobaris fallax has been studied as a potential biological control agent for dyer's woad (Isatis tinctoria) in North America, though host specificity testing revealed significant non-target risks.
Aulacobaris lepidii
Imported Crucifer Weevil
Aulacobaris lepidii, commonly known as the Imported Crucifer Weevil, is a small weevil species in the family Curculionidae. It has been introduced to North America from Europe and is associated with plants in the mustard family (Brassicaceae). The species is part of a genus whose members are often recognized as seed-feeding weevils of economic concern.
Auleutes ater
minute seed weevil
Auleutes ater is a species of minute seed weevil in the family Curculionidae. It is found in North America. The species is classified as provisionally accepted in taxonomic databases, indicating some uncertainty regarding its current taxonomic status or placement within the genus.
Auleutes donaldi
Auleutes donaldi is a species of weevil in the family Curculionidae, described by Colonnelli in 1991. It belongs to the genus Auleutes, a group of small weevils within the hyperdiverse weevil family. The species is provisionally accepted in taxonomic databases. Like other Auleutes species, it is likely associated with herbaceous vegetation, though specific ecological details remain undocumented.
Auleutes subfasciatus
minute seed weevil
Auleutes subfasciatus is a minute seed weevil in the family Curculionidae, described by Dietz in 1896. It is one of several small weevil species in the genus Auleutes, which are associated with seeds of various plants. The species is recorded from North America, though detailed biological information remains limited.
Auleutes tenuipes
minute seed weevil
Auleutes tenuipes is a species of minute seed weevil in the family Curculionidae, first described by John Lawrence LeConte in 1876. It is one of approximately 30 species in the genus Auleutes, a group of small weevils associated with seeds. The species is documented from eastern Canada and is presumed to occur more broadly in North America, though records remain sparse.
Aulobaris anthracina
flower weevil
Aulobaris anthracina is a species of flower weevil in the beetle family Curculionidae. It was described by George Charles Champion in 1909. The species is found in North America. The genus Aulobaris belongs to the weevil family, characterized by the distinctive elongated snout (rostrum) typical of curculionids.
Bagoinae
Bagoinae is a subfamily of weevils (Curculionidae) containing the genus Bagous and related genera. Members are primarily associated with aquatic and semi-aquatic habitats, though some occupy terrestrial environments. The group has been variously classified, with some treatments placing it within Molytinae. The subfamily includes approximately 130 species in the Palaearctic region, with the genus Bagous distributed globally except Central and South America.
Bagous
Bagous is a genus of semi-aquatic weevils in the family Curculionidae containing at least 360 described species. Many species are associated with aquatic or semi-aquatic habitats, with several species developed as biological control agents for invasive aquatic plants, particularly Hydrilla verticillata. The genus includes both native and introduced species with varying degrees of host specificity. Larvae typically develop within plant stems while adults feed on stems and leaves.
Bagous americanus
Bagous americanus is a species of true weevil in the family Curculionidae. It is found in North America, with records from Canada and the United States. The species is associated with the aquatic plant Nymphaea odorata (American white waterlily), on which both adults and larvae feed. Larvae are leaf miners, developing within the leaves of their host plant.
Bagous bituberosus
Bagous bituberosus is a species of true weevil in the family Curculionidae, first described by John Lawrence LeConte in 1876. The species is known from North America, with confirmed records from Canada and the United States. Like other members of the genus Bagous, it is associated with aquatic or semi-aquatic habitats. The specific epithet 'bituberosus' refers to a morphological feature of two tubercles or protuberances.
Bagous buchanani
Bagous buchanani is a species of true weevil in the family Curculionidae, described by O'Brien & Wibmer in 1982. It is known from North America. The genus Bagous comprises aquatic and semi-aquatic weevils, though species-specific ecological details for this taxon remain undocumented.
Bagous californicus
Bagous californicus is a species of true weevil in the beetle family Curculionidae. It was described by LeConte in 1876 and is found in North America. The genus Bagous comprises aquatic and semi-aquatic weevils, though specific ecological details for this species remain undocumented.
Bagous magister
snout beetle, bark beetle
Bagous magister is a species of weevil in the family Curculionidae, first described by John Lawrence LeConte in 1876. It is a small beetle with the characteristic elongated snout (rostrum) typical of the genus Bagous. The species occurs in North America, with records from the United States and Canada (Ontario). As a member of the Bagous genus, it is associated with aquatic or semi-aquatic habitats, though specific ecological details for this species remain poorly documented.
Bagous obliquus
Bagous obliquus is a species of true weevil in the family Curculionidae. It was described by LeConte in 1876. The species is known from North America, with records from Canada (New Brunswick, Ontario, Québec) and the United States. As a member of the large genus Bagous, it belongs to a group of weevils often associated with aquatic or semi-aquatic habitats, though specific ecological details for this species remain limited.
Bagous pusillus
Bagous pusillus is a species of true weevil in the beetle family Curculionidae, described by LeConte in 1876. It is a small weevil species found in North America. The genus Bagous comprises aquatic and semi-aquatic weevils often associated with wetland habitats, though specific ecological details for this species remain poorly documented.
Bagous transversus
Bagous transversus is a species of weevil in the family Curculionidae, described by LeConte in 1876. It is known from North America, with records from multiple Canadian provinces including Alberta, British Columbia, Manitoba, and Nova Scotia. The genus Bagous comprises aquatic or semi-aquatic weevils commonly associated with wetland habitats.