Brentidae
Guides
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.
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.
Brentinae
straight-snouted weevils, primitive weevils
Brentinae is a subfamily of primitive weevils in the family Brentidae, commonly called straight-snouted weevils. Members are distinguished from true weevils (Curculionidae) by their straight, elongated rostrum rather than a geniculate (elbowed) snout. The subfamily contains at least 90 genera and 520 described species, with extreme sexual dimorphism in rostrum and mandible structure observed in some species. The type genus Brentus was used by Gustaf Johan Billberg to establish both the subfamily and family in 1820.
Coelocephalapion antennatum
Coelocephalapion antennatum is a species of straight-snouted weevil in the family Brentidae. Species in this genus are small to minute beetles associated with plant material. The specific epithet "antennatum" refers to notable antennae characteristics. Like other members of Apioninae, this species likely has a narrow, elongated rostrum. Detailed biological studies of this particular species appear limited in published literature.
Coelocephalapion eriogoni
Coelocephalapion eriogoni is a species of straight-snouted weevil in the family Brentidae, subfamily Apioninae. The genus Coelocephalapion comprises small weevils associated with specific host plants, and this species is known from associations with Eriogonum (wild buckwheat) species. Like other apionine weevils, it likely exhibits a narrow host range tied to its larval development within plant tissues.
Coelocephalapion persimile
Coelocephalapion persimile is a species of straight-snouted weevil in the family Brentidae, subfamily Apioninae. Members of this genus are characterized by their compact body form and elongated rostrum. The species epithet "persimile" suggests close resemblance to another taxon. Like other brentids, it likely develops in plant tissues, though specific host associations remain undocumented.
Coelocephalapion spretissimum
Coelocephalapion spretissimum is a species of straight-snouted weevil in the family Brentidae. The genus Coelocephalapion comprises small weevils characterized by their elongated rostrum. This species belongs to a group of brentids that are poorly documented in the scientific literature.
Coelocephalapion subornatum
Coelocephalapion subornatum is a species of straight-snouted weevil in the family Brentidae. It belongs to a genus characterized by elongated, slender body forms and notably elongated rostrums. The species is documented from a limited number of observations, suggesting it may be uncommon or underreported. As with other members of Brentidae, it likely exhibits the family-typical elongated snout used for feeding and oviposition.
Coelocephalapion ventricosum
Coelocephalapion ventricosum is a species of straight-snouted weevil in the family Brentidae. As a member of this family, it possesses the characteristic elongated snout (rostrum) typical of brentid weevils. The genus Coelocephalapion is part of the diverse apionine radiation within Brentidae. Very little specific information about this particular species is available in published sources.
Cyladini
Cyladini is a tribe of weevils in the family Brentidae, subfamily Apioninae. The tribe includes economically significant pests of sweet potato, particularly the sweetpotato weevil (Cylas formicarius), which causes substantial damage to storage roots in tropical and subtropical production regions. Members of this tribe are characterized by their association with Convolvulaceae host plants and their status as specialized root-feeding pests.
pestagriculturesweet-potatoConvolvulaceaeintegrated-pest-managementCylas-formicariustropical-agriculturesubtropical-agricultureroot-feeding-weevilstorage-root-damageeconomic-pestbiological-controlcrop-protectionsoutheastern-United-Statesglobal-food-securitylow-input-farmingdrought-tolerant-cropnematode-interactionsBeauveria-bassianaentomopathogenic-nematodesresistant-varietiescrop-rotationcover-cropsIPMBrentidaeApioninaeColeopteraInsectaHexapodaArthropodaAnimaliaClaire-SchloemerAuburn-UniversityUniversity-of-Wisconsin-MadisonJournal-of-Integrated-Pest-ManagementScott-GrahamKathy-LawrenceCovingtonBonitaBeauregardOrleansguava-root-knot-nematoderoot-knot-nematodewirewormcucumber-beetleflea-beetlePurpureocillium-lilacinumbiopesticidegreen-bridge-effectmustardglucosinolatepeanutbahiagrasssandy-soildrought-adaptationbiofuelanimal-feednutritional-valuefood-securitysustainable-agricultureenvironmental-impactmicrobial-controlfungal-pathogenentomopathogenic-fungusbiological-nematicidenematode-egg-parasitismpest-managementagricultural-entomologycrop-lossyield-reductionroot-qualitymarketabilityintegrated-managementcultural-controlselective-chemical-useproductivitynatural-processesversatilityglobal-cultivationtropical-regionssubtropical-regionssoutheastern-U.S.domestic-productionrevenueacreageharvestfarminggrowerbreedingresearchcultivar-developmentevolving-threatspest-pressuresoil-healthfield-preparationwinter-habitatinsect-habitatparasitisminfestationdamagelosschallengedefensearsenalbattlewarresilienceadaptationinnovationstrategysustainabilitylivelihoodnourishmentfood-productionagricultural-researchentomologyplant-protectioncrop-sciencehorticultureroot-croptuberstorage-organfeeding-injurygallingcracked-rootsstunted-growthwater-uptakenutrient-uptakepathogen-interactionexacerbated-damagevariety-selectionhardy-varietyrobust-performancehigh-yieldnematode-resistancepest-resistancevulnerabilityspreading-pestpopulation-reductionsoil-improvementspring-plantingtoxic-compoundnatural-propertymicrobial-productformulationapplicationevaluationmaximizationpotentialurgencygrowing-threatcomprehensive-strategybalanceenablementessential-cropsecuritydefiancedifficult-conditionsmenacing-pestsformidable-threatsproduction-continuationface-to-facethreatdiseaseresilient-cropgrowing-conditionsmenacestorysurfacebeneathrelentlessadversaryfavorconditionpowerfulfoetinyparasiteattackformationdiminishabilityresultunattractiveworsematterinteractionsignificantdevastatingruininflictfurthercompromisegrapplethankfullyfarmerbeginselecthardywithstandtraditionalgaintractionvulnerablehighlightneedcontinuebreedeffortdevelopcapableopposeevolveaftersturdyculturalmanagementrotationcovercroppinglinetakeyearoffgrowrotatenon-hostproveeffectivereducepopulationbreathelifeimprovehealthsuppressprepareexamplecontaincompoundcallbreakdownreleasesubstancewaryproviderepresentmethodharnesshelpwinsporefungusinfectkilltypetapdifferentmicroscopicanimalparasitizeplususecombatattentioneggaidfightminimizeimpactdespiteadvancequestionremainrequiremaximizeparticularlyurgentposekeyenhanceapproachintegratepracticecontrolselectivechemicalenablenaturalprocessnutritionalvalueessentialcropglobalfoodregionsupportmillionaddresspressureinnovativesustainableensurelivemanyformidableproductionalthoughcomefaceresilientabledefydifficultreadmorejournalintegratedClaireSchloemerPh.D.studentconductearnmasterdegreeemailsharelinkfriendopennewwindowprintFacebookLinkedInBlueskyMastodonXRedditThreadsrelateddiscoverfromtodaysubscribegetlatestpostsendyourCylasformicariussweetpotatosweetpotatoweevilphotocourtesyshowherecucumberbeetleroot-knotnematodeharmU.S.guidedetailvarietyoptionbeloveddelicioustastebenefitbrightcolorrankseventhmostimportantworldtropicalsubtropicalareaaroundservefeedsourcegoodpicklow-inputstylewelladaptedsandysoildroughtUnitedStates2022over130,000acregeneratenearly600southeasternleaddomesticAuburnUniversityweatherarticlepublishMarchcolleagueScottGrahamKathyLawrencevariousamongplant-parasiticspecificallyrootsystemcausegallplantwaternutrientstuntedgrowthyieldcrackmakeinteractpathogenexacerbateinsectknowstorage7annualsouthernfleaqualityleaveeconomicownresistancebettermeanwhilenewerhighrobustperformancehoweverresistguavaspeciesspreadnextseasonwinterfieldspringtoxicgreenbridgeeffecthabitatfeedersymptominfectionbiologicalpropertymicrobeBeauveriabassianaagentformulateenvironmentallyfriendlyproducteasyapplysimilarlybeneficialentomopathogenicnematicidePurpureocilliumlilacinumsolutionenvironmentalresistantnematode-resistantcultivarcomprehensivecultivationWisconsin-MadisoncschloemerwisceduCylas
sweet potato weevils
Cylas is a genus of sweet potato weevils comprising over 20 described species, classified in the monogeneric tribe Cyladini within the subfamily Brentinae. The genus contains major agricultural pests, particularly Cylas formicarius, which is considered the most serious pest of sweet potato worldwide. Several species including C. formicarius, C. brunneus, and C. puncticollis are known to infest sweet potato crops, causing substantial economic losses through damage to storage roots and vines.
Cylas formicarius
Sweet Potato Weevil
Cylas formicarius is a globally significant pest of sweet potato (Ipomoea batatas), causing 30-100% yield losses in over 80 countries. The species exhibits a highly cryptic lifestyle: larvae feed internally within vines and tubers, making chemical control ineffective once infestation occurs. Adults are nocturnal and migratory, with sexual dimorphism in antennae structure. The weevil has been designated a quarantine pest worldwide due to its economic impact on food security and agricultural trade.
Eutrichapion
Eutrichapion is a genus of small weevils in the family Brentidae, containing approximately eight described species. Members are characterized by a pear-shaped body form typical of the subfamily Apioninae. The genus was established by Reitter in 1916 and is distributed across parts of Europe and North America.
Exapion ulicis
Gorse Seed Weevil
Exapion ulicis is a small seed-feeding weevil specialized on gorse (Ulex europaeus). Adults are light gray with a prominent snout roughly half the body length. The species is native to western Europe and has been introduced to New Zealand, California, Hawaii, and other regions as a biological control agent targeting invasive gorse populations. Larval feeding destroys seeds within pods, reducing plant spread, while adult feeding on stems and spines causes minor damage.
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rational-extensive-Pareto-optimal-individually-rational-Nash-stable-setminimal-weakly-retentive-Pareto-optimal-individually-rational-Nash-stable-setminimal-strongly-retentive-Pareto-optimal-individually-rational-Nash-stable-setminimal-collectively-retentive-Pareto-optimal-individually-rational-Nash-stable-setminimal-individually-retentive-Pareto-optimal-individually-rational-Nash-stable-setminimal-Nash-retentive-Pareto-optimal-individually-rational-Nash-stable-setminimal-individually-rational-retentive-Pareto-optimal-individually-rational-Nash-stable-setminimal-weakly-stable-Pareto-optimal-individually-rational-Nash-stable-setminimal-strongly-stable-Pareto-optimal-individually-rational-Nash-stable-setminimal-collectively-stable-Pareto-optimal-individually-rational-Nash-stable-setminimal-individually-stable-Pareto-optimal-individually-rational-Nash-stable-setminimal-Nash-stable-Pareto-optimal-individually-rational-Nash-stable-setminimal-individually-rational-stable-Pareto-optimal-individually-rational-Nash-stable-setminimal-weakly-Nash-stable-Pareto-optimal-individually-rational-Nash-stable-setminimal-strongly-Nash-stable-Pareto-optimal-individually-rational-Nash-stable-setminimal-collectively-Nash-stable-Pareto-optimal-individually-rational-Nash-stable-setminimal-individually-Nash-stable-Pareto-optimal-individually-rational-Nash-stable-setminimal-Nash-Nash-stable-Pareto-optimal-individually-rational-Nash-stable-setminimal-individually-rational-Nash-stable-Pareto-optimal-individually-rational-Nash-stable-setminimal-weakly-individually-rational-Pareto-optimal-individually-rational-Nash-stable-setminimal-strongly-individually-rational-Pareto-optimal-individually-rational-Nash-stable-setminimal-collectively-individually-rational-Pareto-optimal-individually-rational-Nash-stable-setminimal-individually-individually-rational-Pareto-optimal-individually-rational-Nash-stable-setminimal-Nash-individually-rational-Pareto-optimal-individually-rational-Nash-stable-setminimal-individually-rational-individually-rational-Pareto-optimal-individually-rational-Nash-stable-setFallapion
Fallapion is a genus of minute seed weevils in the family Brentidae (subfamily Apioninae), established by Kissinger in 1968. Members of this genus are small beetles characterized by their elongated rostrum and compact body form typical of apionine weevils. The genus is taxonomically distinct from the broader Apion genus complex, with species-level taxonomy requiring detailed morphological examination. Observations of this genus are relatively sparse, with limited documented occurrences in natural history databases.
Fallapion bischoffi
Fallapion bischoffi is a species of straight-snouted weevil in the family Brentidae. The genus Fallapion belongs to the subfamily Apioninae, a group of small weevils commonly known as seed weevils or apionids. As a member of the Brentidae, this species possesses the characteristic elongated snout (rostrum) typical of the family. Information regarding the specific biology and distribution of this species is limited in available sources.
Fallapion ellipticum
Fallapion ellipticum is a species of straight-snouted weevil in the family Brentidae. Members of this genus are characterized by their elongated rostrum and association with woody plants. The specific epithet 'ellipticum' refers to the elliptical body shape. Information on this species remains limited due to its rarity in collections and observations.
Fallapion funereum
Fallapion funereum is a species of straight-snouted weevil in the family Brentidae. As a member of the genus Fallapion, it belongs to a group of small weevils characterized by elongated rostrums. Very few documented observations of this species exist, and its biology remains poorly known. The specific epithet 'funereum' (Latin for 'funeral' or 'deathly') likely refers to its dark coloration.
Fallapion impunctistriatum
Fallapion impunctistriatum is a species of straight-snouted weevil in the family Brentidae. The genus Fallapion comprises small weevils characterized by elongated rostra and reduced wings. Species in this genus are associated with woody plants, though specific ecological data for F. impunctistriatum remain limited. The species epithet 'impunctistriatum' refers to the absence of punctate striae on the elytra, a distinguishing morphological feature.
Fallapion obsoletum
Fallapion obsoletum is a species of straight-snouted weevil in the family Brentidae. The genus Fallapion comprises small weevils, and this species is distinguished by its relatively unmarked, dull coloration implied by the specific epithet "obsoletum" (meaning worn or indistinct). Like other brentids, it possesses an elongated rostrum and lacks the elbowed antennae typical of true weevils (Curculionidae). Published records for this species are sparse, and its biology remains poorly documented.
Fallapion occidentale
Black Sunflower Stem Weevil
Fallapion occidentale, commonly known as the black sunflower stem weevil, is a small weevil in the family Brentidae (primitive weevils) that feeds on sunflower plants (Helianthus spp.). Adults are black and approximately 3 mm in length. The species develops internally within sunflower stems and leaf petioles, with larvae feeding on pith tissue. It has been documented in association with the sunflower stem weevil (Cylindrocopturus adspersus) in Texas, though it causes minimal economic damage compared to other sunflower pests. Pupation occurs within the plant, with adults emerging in late summer.
Ischnopterapion virens
White Clover Weevil
Ischnopterapion virens is a small weevil species in the family Brentidae (subfamily Apioninae), commonly known as the White Clover Weevil. The species name 'virens' derives from Latin, meaning 'green,' likely referring to a greenish coloration characteristic of this beetle. The genus Ischnopterapion belongs to a group of weevils historically classified in the family Apionidae, now treated as a subfamily within Brentidae. This species has been documented across multiple island localities in the Azores archipelago (Faial, Pico, São Jorge, Santa Maria) as well as in New Brunswick, Canada, suggesting a broad but potentially disjunct distribution pattern.
Microon
Microon is a genus of weevils in the family Brentidae, established by Alonso-Zarazaga in 1989. These beetles belong to the straight-snouted weevil lineage within Coleoptera. The genus has been documented from limited observations in northern Europe.
Microon canadense
Microon canadense is a species of weevil in the family Brentidae, described by Brown in 1944. As a member of the genus Microon, it belongs to a group of small brentid weevils. The species epithet "canadense" indicates a Canadian type locality or distribution. Information regarding its biology, ecology, and specific identification features remains poorly documented in available sources.
Nanophyes
Nanophyes is a genus of small weevils in the family Brentidae, distributed across Europe, Japan, Southern Africa, and parts of Asia. Species are associated with specific host plants, with larvae typically developing inside fruits and adults feeding on leaves, pollen, and nectar. Some species have been studied as potential biological control agents for aquatic weeds, while others are fruit predators of forest trees.
Nanophyes brevis
Nanophyes brevis is a species of straight-snouted weevil in the family Brentidae, subfamily Nanophyinae. The species was described by Boheman in 1845. Like other members of the genus Nanophyes, it is a small weevil associated with aquatic or semi-aquatic plants. The genus is known for species that develop in seeds or stems of plants, particularly in the family Lythraceae.
Nanophyes marmoratus
Flower Bud Weevil
Nanophyes marmoratus is a small weevil in the family Brentidae, commonly known as the Flower Bud Weevil. It is native to Europe and has been introduced to North America. The species is associated with flower buds of its host plants, though specific host relationships require further documentation. It is one of approximately 180 species in the genus Nanophyes, a group of minute weevils typically under 5 mm in length.
Neapion frosti
Neapion frosti is a species of straight-snouted weevil in the family Brentidae, originally described as Apion frosti by Kissinger in 1968 and later transferred to the genus Neapion. It is a small beetle known from eastern Canada, with records from New Brunswick, Nova Scotia, Ontario, and Quebec. The genus Neapion contains species associated with various host plants, though specific ecological details for N. frosti remain poorly documented.
Paratrachelizus
Paratrachelizus is a genus of primitive weevils in the family Brentidae, established by Kleine in 1921. The genus contains more than 30 described species. Members of this genus are characterized by the elongated, straight rostrum typical of brentid weevils. The genus has been recorded from Colombia.
Perapion punctinasum
Perapion punctinasum is a small weevil species in the family Brentidae, originally described from North America in 1884. It belongs to a genus of apionid-like weevils characterized by their compact body form and elongated rostrum. The species is recorded from multiple Canadian provinces, suggesting a broad northern distribution. Like other members of Perapion, it is likely associated with herbaceous vegetation, though specific host relationships remain poorly documented.
Stenopterapion
Stenopterapion is a genus of weevils in the family Brentidae, established by Bokor in 1923. It contains approximately six described species distributed primarily in Europe. The genus is characterized by a pear-shaped body form typical of many brentid weevils. Species within this genus are relatively small and associated with herbaceous vegetation.
Stereodermus
Stereodermus is a genus of primitive weevils in the family Brentidae, comprising more than 40 described species. The genus occurs in both the Neotropical and Oriental regions, with substantial diversity in Central and South America. Species are characterized by elongated, cylindrical bodies typical of brentid weevils. Taxonomic work has focused heavily on the Neotropical fauna, with recent revisions describing new species and resolving synonymies.
Synapiina
Synapiina is a subtribe of weevils within the family Brentidae, characterized by elongated, slender bodies and antennae that are straight or only weakly elbowed. Members of this subtribe are distinguished from other brentid groups by specific genitalic and rostral features. The subtribe includes multiple genera and is primarily distributed in tropical and subtropical regions. These weevils are associated with woody plants, though specific host relationships remain poorly documented for many species.
Trachelizini
primitive weevils
Trachelizini is a tribe of primitive weevils within the family Brentidae, subfamily Brentinae. The tribe contains at least 100 genera organized into nine recognized subtribes, with two additional genera currently unplaced. Members are characterized by elongated, slender body forms typical of brentid weevils. The tribe has been subject to significant taxonomic revision, with subtribal classifications established by multiple authors from 1865 to 1999.
Tracheloschizus
Tracheloschizus is a genus of straight-snouted weevils in the family Brentidae, established by Damoiseau in 1966. The genus belongs to the weevil superfamily Curculionoidea and is characterized by members of this primarily tropical family. Brentidae weevils are distinguished from the more familiar Curculionidae by their elongated, straight rostrums rather than the curved snouts typical of true weevils. The genus is relatively poorly documented in public sources, with limited species-level information available.
Trichapion
Trichapion is a genus of weevils in the family Brentidae (formerly placed in Apionidae). The genus was established by Wagner in 1912. Several species have been studied as biological control agents, particularly for invasive Sesbania weeds. Species were transferred from the genus Apion during taxonomic revisions.
Trichapion disparatum
Trichapion disparatum is a species of straight-snouted weevil in the family Brentidae, subfamily Apioninae. Members of this genus are small, slender weevils characterized by elongated rostrums and are commonly associated with leguminous host plants. The species is part of a taxonomically complex group of apionine weevils that have undergone significant revision in recent decades.
Trichapion leporinum
Trichapion leporinum is a species of straight-snouted weevil in the family Brentidae, described by Salsbury in 1987. The species epithet "leporinum" (hare-like) may reference a morphological trait or host association. Distribution records indicate presence in Manitoba, Canada. As a member of the Apioninae subfamily, it likely exhibits the slender body form and elongated rostrum characteristic of this group.
Trichapion modicum
Trichapion modicum is a species of straight-snouted weevil in the family Brentidae. The genus Trichapion was established to accommodate species previously placed in Apion, distinguished by morphological features of the rostrum and antennae. This species has been documented in Manitoba, Canada. Like other brentid weevils, it possesses an elongated rostrum and elbowed antennae. Specific ecological details for this species remain poorly documented.
Trichapion nigrum
Trichapion nigrum is a species of straight-snouted weevil in the family Brentidae, first described by Herbst in 1797. It belongs to a genus of small weevils characterized by elongated rostrums. The species has been documented in eastern Canada, with records from New Brunswick, Ontario, and Quebec. Like other members of Brentidae, it is likely associated with plant material, though specific ecological details remain poorly documented.
Trichapion porcatum
Trichapion porcatum is a species of straight-snouted weevil in the family Brentidae. It is recorded from eastern Canada, specifically New Brunswick, Ontario, and Quebec. The genus Trichapion comprises small weevils associated with leguminous plants. Limited observational data exists for this species.
Trichapion proclive
Trichapion proclive is a species of straight-snouted weevil in the family Brentidae, first described by John Lawrence LeConte in 1857. It belongs to a genus characterized by elongated rostra and association with leguminous host plants. Records indicate presence in British Columbia, Canada, though observations remain sparse with limited documented occurrence data.
Trichapion reconditum
Trichapion reconditum is a species of straight-snouted weevil in the family Brentidae. It is a small beetle with an elongated rostrum, characteristic of the family. The species has been documented in eastern Canada, with records from New Brunswick, Ontario, and Quebec. It appears to be rarely encountered, with very few observations in citizen science databases.
Trichapion roseae
Trichapion roseae is a small weevil in the family Brentidae, formerly placed in the family Apionidae. It is associated with plants in the genus Rosa (roses), with adults and larvae feeding on various parts of the host. The species is native to the Palearctic region and has been introduced to North America. It is recognized by its elongated rostrum and association with rose hosts.
Trichapion rostrum
baptisia seed pod weevil, wild indigo weevil
Trichapion rostrum is a weevil species in the family Brentidae, commonly known as the baptisia seed pod weevil or wild indigo weevil. Adults are entirely black with an elongated rostrum bearing antennae near its base. The species is tightly associated with wild indigo plants (genus Baptisia), where females deposit eggs in seed pods and larvae develop by feeding on seeds. Its seed predation can negatively impact host plant reproduction.
Trichapion sp-nr-albidulum
Trichapion sp-nr-albidulum is an undescribed or near-identified species within the genus Trichapion, a group of small weevils in the family Brentidae. Members of this genus are characterized by their elongated, cylindrical bodies and distinctive rostrums. The 'sp-nr-albidulum' designation indicates a specimen that closely resembles T. albidulum but has not been formally confirmed to that species. These weevils are associated with leguminous host plants and are part of the diverse apionine fauna of North America.
Trichapion tenuirostrum
Trichapion tenuirostrum is a species of straight-snouted weevil in the family Brentidae. The genus Trichapion is distinguished by its elongate, slender rostrum and association with leguminous host plants. This species is recorded from the Canadian prairie provinces. Like other members of the genus, it likely develops in seeds or pods of Fabaceae, though specific host associations for this species remain poorly documented.