Curculionidae
Guides
Hypothenemus crudiae
Hypothenemus crudiae is a species of bark beetle in the family Curculionidae. It has been documented in North America, Europe, and parts of South America and Africa. As a member of the genus Hypothenemus, it belongs to a group of small ambrosia beetles that bore into wood and plant material.
Hypothenemus exiguus
Hypothenemus exiguus is a species of small bark beetle in the family Curculionidae. The species was originally described as Trischidias exigua by Wood in 1986 and is currently recognized as a synonym under the genus Hypothenemus. It has been recorded from Middle America and North America, including the conterminous 48 United States. Little specific information is available regarding its biology or ecology compared to better-known congeners such as the coffee berry borer (H. hampei).
Hypothenemus georgiae
Hypothenemus georgiae is a small bark beetle species in the weevil family Curculionidae, originally described as Trischidias georgiae by Hopkins in 1915. The species belongs to the genus Hypothenemus, which includes several economically significant pests of agricultural crops, most notably the coffee berry borer (H. hampei). Little specific information is documented about the biology or ecology of H. georgiae compared to its congener H. hampei.
Hypurus
Hypurus is a genus of minute seed weevils in the beetle family Curculionidae. The genus was established by Rey in 1882. It contains at least one described species, Hypurus bertrandi. As seed weevils, members of this genus are associated with plant seeds, though specific host relationships remain poorly documented.
Idiostethus
flower weevils
Idiostethus is a genus of flower weevils established by Thomas Lincoln Casey in 1892. The genus comprises at least 20 described species within the family Curculionidae. Members are small beetles associated with flowers.
Ips borealis
Northern Engraver Beetle
Ips borealis is a bark beetle species in the family Curculionidae, commonly known as the Northern Engraver Beetle. It is found in North America, with records from Canadian provinces including Alberta, British Columbia, Manitoba, and New Brunswick. As a member of the genus Ips, it belongs to a group of beetles known as engraver beetles that tunnel beneath tree bark, creating distinctive gallery patterns. The species was described by J.M. Swaine in 1911.
Ips calligraphus
six-spined engraver beetle, six-spined ips, coarsewriting engraver
Ips calligraphus is a bark beetle in the family Curculionidae, commonly known as the six-spined engraver beetle. It is distributed across North America, Central America, and the Caribbean, where it primarily colonizes Pinus species. The species is notable for its six-spined declivity (posterior slope) used in identification, its complex gallery system with radiating egg galleries from a central nuptial chamber, and its potential to cause tree mortality during outbreaks. It has been recorded from over 20 U.S. states and several Caribbean islands including Jamaica and the Dominican Republic.
Ips confusus
pinyon pine beetle, pinyon ips, pinyon engraver beetle
Ips confusus is a bark beetle in the family Curculionidae, commonly known as the pinyon pine beetle or pinyon ips. It is a significant pest of pinyon pine (Pinus edulis) and ponderosa pine (Pinus ponderosa) in the southwestern United States and Mexico. The beetle colonizes stressed or weakened trees, creating galleries beneath the bark where larvae feed on phloem tissues. Population outbreaks can cause extensive tree mortality, particularly during drought conditions.
Isochnus flagellum
Isochnus flagellum is a small weevil in the family Curculionidae, tribe Rhamphini. The species was originally described as Orchestes flagellum by Erichson in 1902. It is known from high-latitude regions of North America including Alaska, Yukon Territory, and Northwest Territories. As a member of the genus Isochnus, it belongs to a group of leaf-mining weevils associated with birch and alder foliage.
Isochnus rufipes
Isochnus rufipes is a weevil species in the family Curculionidae described by LeConte in 1876. The genus Isochnus contains leaf-mining weevils, and the species epithet 'rufipes' refers to reddish legs. Very little published information exists specifically for this species.
Isodacrys burkei
broad-nosed weevil
Isodacrys burkei is a species of broad-nosed weevil described by Howden in 1961. It belongs to the family Curculionidae, the largest family of beetles. The species is known from North America, though specific details about its biology and ecology remain limited.
Isodacrys ovipennis
Isodacrys ovipennis is a species of broad-nosed weevil in the family Curculionidae, subfamily Entiminae. The species was described by Schaffer in 1908. Available records indicate a distribution in Texas, USA and Mexico. As a member of the tribe Tanymecini, it belongs to a group of weevils characterized by elongated rostra and typically associated with herbaceous vegetation.
Isodrusus
Isodrusus is a genus of weevils (family Curculionidae) in the subfamily Entiminae, described by Sharp in 1911. It belongs to the tribe Tanymecini, a group of broad-nosed weevils characterized by their relatively short rostrums. The genus is poorly documented in public sources, with no observations recorded on iNaturalist and no species-level information readily available. Its taxonomic placement within Tanymecini suggests morphological affinities with other genera in this tribe, which are primarily herbivorous.
Isodrusus debilis
Isodrusus debilis is a species of weevil in the family Curculionidae, described by David Sharp in 1911. The genus Isodrusus belongs to the tribe Tanymecini within the subfamily Entiminae, a group of broad-nosed weevils. Very little is known about the biology or ecology of this species. It appears to be native to Guatemala based on available distribution records.
Laemosaccus burkei
Laemosaccus burkei is a species of weevil in the family Curculionidae, described by Henry Hespenheide in 2019. The genus Laemosaccus belongs to the tribe Anthonomini, a group of weevils noted for modified leg structures. Members of this genus, including L. burkei, exhibit distinctive ornamentation on the front femora with teeth—a trait referenced in discussions of morphological variation among weevils. The species is known from limited observations, with 8 records documented on iNaturalist.
Laemosaccus clytrinoides
Laemosaccus clytrinoides is a weevil species in the family Curculionidae, described by Hespenheide in 2019. It belongs to a genus known for distinctive modifications to the front femora. The species name 'clytrinoides' suggests a resemblance to the genus Clytrinus, a group of cryptocephaline leaf beetles.
Laemosaccus gossypii
Laemosaccus gossypii is a species of weevil in the family Curculionidae, described by Hespenheide in 2019. The specific epithet "gossypii" suggests an association with cotton (Gossypium), though the exact nature of this relationship has not been detailed in available sources. The genus Laemosaccus is characterized by modified front femora bearing teeth, a trait shared with related anthonomine weevils.
Laemosaccus obrieni
Laemosaccus obrieni is a species of weevil in the family Curculionidae, described by Henry Hespenheide in 2019. The genus Laemosaccus is characterized by modified front femora bearing teeth, a trait shared with certain other weevil genera including Tachygonus. This species belongs to a group of weevils exhibiting structural elaboration of leg segments.
Laemosaccus texanus
Laemosaccus texanus is a species of true weevil in the family Curculionidae, described by G.C. Champion in 1903. It is native to North America. Very little is known about its biology, ecology, or specific habitat requirements. The genus Laemosaccus belongs to a diverse group of weevils, but species-level information for most members remains sparse in scientific literature.
Larinus
Larinus is a genus of true weevils (family Curculionidae) comprising approximately 180 species, with the highest diversity in the Palaearctic region, particularly Turkey where over 50 species occur. These beetles are characterized by stocky, rounded bodies and are primarily associated with plants in the family Asteraceae. Several species have been introduced to North America as biological control agents against invasive thistles, though some have demonstrated non-target effects on native thistle species.
Larinus carlinae
Canada thistle bud weevil, thistle bud weevil, Canada thistle stem weevil
A small weevil native to Europe and western Asia introduced to North America as a biological control agent for invasive thistles. Adults emerge in spring and feed on developing thistle buds with their elongated snouts. Females drill into flower buds to deposit eggs; larvae hatch and consume reproductive tissues, destroying seeds and preventing plant reproduction. Populations can reduce target thistle species by 90% or more within a decade of establishment. The species has been observed feeding on native North American thistles, raising conservation concerns for endemic species.
Larinus curtus
Yellow Starthistle Flower Weevil
Larinus curtus is a small weevil native to southern Europe and the Mediterranean region, introduced to the United States in 1992 as a biological control agent for the invasive weed yellow starthistle (Centaurea solstitialis). Adults are dark brown to black with light-colored mottled hairs and measure approximately 6 mm in length. The species is univoltine, with larvae developing inside flower heads where they feed on developing seeds, achieving average seed reduction rates of 96% per infested head. While adults feed on flowers and pollen, the larval stage provides the primary biocontrol impact.
Larinus minutus
lesser knapweed flower weevil
Larinus minutus is a small true weevil used as a biological control agent against invasive knapweeds, particularly diffuse knapweed (Centaurea diffusa) and spotted knapweed (Centaurea maculosa). Native to southern Europe and the Mediterranean, it was first released in the United States in 1991 and is now established throughout the western United States. Adults feed on knapweed foliage and flowers, while larvae develop within flower heads and consume developing seeds, often destroying 100% of seeds in infested heads.
Larinus obtusus
Blunt Knapweed Flower Weevil
Larinus obtusus is a small true weevil in the family Curculionidae, commonly known as the blunt knapweed flower weevil. It is native to Europe and the Middle East and has been introduced to North America as a biological control agent against invasive knapweeds (Centaurea species), particularly spotted knapweed. The species is closely related to Larinus minutus, with which it shares similar morphology and ecological role.
Larinus turbinatus
Turbine Cylindrical Weevil
Larinus turbinatus is a true weevil in the family Curculionidae, native to the western Palaearctic. The species name refers to its cone-shaped snout. It is oligophagous on thistles, particularly Carduus and Cirsium species. Females lay eggs in flower buds, and larvae develop within the flower head, typically resulting in one surviving larva per flower due to intraspecific competition. The species has been introduced to the United States.
Lechriopini
Lechriopini is a tribe of true weevils (Curculionidae) within the subfamily Baridinae, established by Lacordaire in 1865. The tribe contains over 510 described species distributed across more than 20 genera. Members are characterized by the elongated snout typical of weevils, with morphological diversity reflecting their broad geographic distribution.
Lechriops
Lechriops is a genus of true weevils in the family Curculionidae containing at least 90 described species. The genus was established by Carl Johan Schoenherr in 1825. The genus name is masculine per ICZN Article 30.1.4.3, which specifies that compound genus-group names ending in -ops are to be treated as masculine regardless of derivation or original author treatment. Members are small weevils associated with coniferous trees.
Lechriops griseus
Lechriops griseus is a species of weevil in the family Curculionidae, subfamily Cossoninae. Members of the genus Lechriops are small weevils associated with coniferous trees, where larvae bore under bark on trunks and larger branches. The species epithet "griseus" (Latin for "gray") likely refers to the coloration of the adult beetle. This species is part of a genus containing multiple species with similar bark-boring habits in pine and related conifers.
Lechriops oculatus
Lechriops oculatus is a small true weevil (family Curculionidae) native to North America. The species is documented in Canada from Manitoba eastward through Ontario to the Maritime provinces. Observations suggest it inhabits residential and semi-natural environments, including fence lines and areas with herbaceous vegetation. The specific epithet 'oculatus' likely refers to eye-like markings, though detailed morphological descriptions are limited in available sources.
Lepidophorus
Lepidophorus is a genus of broad-nosed weevils in the family Curculionidae, established by Kirby in 1837. The genus contains approximately 13 described species. These beetles belong to the subfamily Entiminae and tribe Byrsopagini. Distribution records indicate presence in Canada and the United States.
Lepyrus
Lepyrus is a genus of true weevils in the family Curculionidae, first described by Germar in 1817. The genus contains more than 70 described species. Members of this genus are distributed across northern Europe, with confirmed records from Denmark, Norway, and Sweden. The group is part of the diverse weevil fauna associated with temperate and boreal environments.
Lepyrus oregonus
Lepyrus oregonus is a true weevil (Curculionidae) described by Casey in 1895. The species is known from North America and includes two recognized subspecies: L. o. oregonus and L. o. tessellatus. Available records indicate limited observation data, with 17 documented occurrences on iNaturalist.
Lepyrus palustris
Marsh Weevil
Lepyrus palustris is a true weevil in the family Curculionidae, characterized by the distinctive elongated snout typical of weevils. The species has a transcontinental distribution spanning the Holarctic region, with records from both North America and Europe. As a member of the large and diverse genus Lepyrus, it inhabits marshy environments as suggested by its specific epithet 'palustris'.
Lignyodes
Ash Seed Weevils
Lignyodes is a genus of weevils in the family Curculionidae, commonly known as ash seed weevils. The genus contains more than 30 described species. Members of this genus are associated with ash trees (Fraxinus spp., Oleaceae) as host plants. The genus was established by Dejean in 1835.
Lignyodes adamanteus
ash seed weevil
Lignyodes adamanteus is a species of ash seed weevil in the family Curculionidae. It belongs to a genus whose members are associated with ash trees (Fraxinus spp.). The species was described by Clark in 1980 and is currently considered a synonym of Neotylopterus adamanteus by some taxonomic authorities.
Lignyodes arizonensis
Lignyodes arizonensis is a species of weevil in the family Curculionidae, tribe Lignyodini. The genus Lignyodes comprises seed weevils associated with soapberry (Sapindus spp.) and related plants. The specific epithet "arizonensis" indicates a geographic connection to Arizona, though detailed published records for this particular species are limited. Members of this genus are characterized by their association with Sapindaceae host plants.
Lignyodes auratus
leguminous seed weevil
Lignyodes auratus is a species of leguminous seed weevil in the beetle family Curculionidae. It was described by Clark in 1980. The species is known from North America, though specific details about its biology and ecology remain poorly documented in published literature.
Lignyodes helvolus
Tawny Ash Weevil
Lignyodes helvolus is a species of leguminous seed weevil in the beetle family Curculionidae. The species was described by Clark in 1980. It is found in North America, with documented records from Canadian provinces including Manitoba, New Brunswick, Ontario, and Québec. The common name "Tawny Ash Weevil" has been recorded for this species, though the origin of this name is not documented in available sources.
Lignyodes horridulus
Rough Ash Seed Weevil, Ash Seed Weevil
Lignyodes horridulus, commonly known as the Rough Ash Seed Weevil, is a seed-feeding weevil in the family Curculionidae. The species was described by Clark in 1980 and is native to North America. It belongs to a genus associated with leguminous seed feeding, though specific host associations for this species require verification. The common name suggests a relationship with ash (Fraxinus), but this may reflect taxonomic confusion with related species rather than confirmed biology.
Lignyodes ligustricolus
Lignyodes ligustricolus is a species of leguminous seed weevil in the family Curculionidae, first described by Clark in 1980. The species is currently classified under the genus Lignyodes, though some taxonomic databases list it as a synonym of Neotylopterus ligustricolus. As a member of the tribe Lignyodini, it belongs to a group of weevils specialized on leguminous plants.
Lignyodes transversus
leguminous seed weevil
Lignyodes transversus is a species of leguminous seed weevil in the beetle family Curculionidae. The species was described by Clark in 1980 and is currently placed in the genus Lignyodes, though it has also been classified under the genus Neotylopterus. As a member of the leguminous seed weevils, it is associated with legume plants, though specific host associations remain poorly documented.
Lignyodes varius
Lignyodes varius is a species of leguminous seed weevil in the beetle family Curculionidae. It is classified within the tribe Lignyodini, a group specialized on legume hosts. The species was originally described by LeConte in 1876 and has been recorded under the synonym Ophryastes varius in some taxonomic databases.
Linogeraeus capillatus
Linogeraeus capillatus is a weevil species described by Kuschel in 1983. It belongs to the family Curculionidae, the largest family of beetles. The species is provisionally accepted in taxonomic databases and has been recorded from Brazil. Knowledge of this species is limited, with few observations documented.
Linogeraeus crucifer
Linogeraeus crucifer is a weevil species described by Prena in 2009. It belongs to the family Curculionidae, the largest family of beetles. The species name 'crucifer' suggests a possible association with cruciferous plants, though this relationship has not been documented. Very little is known about this species beyond its taxonomic description.
Linogeraeus laevirostris
Linogeraeus laevirostris is a species of weevil described by Prena in 2009. The genus Linogeraeus belongs to the family Curculionidae, the largest family of beetles. This species is provisionally accepted in taxonomic databases with limited published information available. The specific epithet "laevirostris" refers to a smooth or polished rostrum (snout).
Linogeraeus neglectus
Linogeraeus neglectus is a species of weevil in the family Curculionidae, described by Kuschel in 1983. The genus Linogeraeus belongs to the large and diverse family of true weevils. Information about the specific biology and ecology of this species is limited in available sources.
Linogeraeus tonsilis
Linogeraeus tonsilis is a species of weevil described by Kuschel in 1983. It belongs to the family Curculionidae, the largest family of beetles. The species is known from very few records, with only two observations documented on iNaturalist. As a member of this diverse family, it possesses the characteristic elongated snout (rostrum) typical of weevils.
Liometophilus
hidden snout weevils
Liometophilus is a genus of hidden snout weevils in the family Curculionidae, established by H.C. Fall in 1912. The genus contains at least two described species: L. manni and L. manui. As members of the "hidden snout weevils" group, species in this genus possess a distinctive rostrum that can be retracted into a ventral groove.
Liometophilus manni
Liometophilus manni is a species of hidden snout weevil in the beetle family Curculionidae. It was described by Fall in 1912. The species is found in North America.
Lipancylus cracens
Lipancylus cracens is a species of weevil in the family Curculionidae, described by Prena in 2012. It belongs to a genus of small weevils within the highly diverse snout beetle family. The species is known from taxonomic description but appears to have limited documented ecological or biological information available in public sources.