Ceutorhynchinae
Guides
Allosirocalus
Allosirocalus is a genus of weevils in the family Curculionidae, described by E. Colonnelli in 1983. The genus is part of the diverse weevil superfamily Curculionoidea and is placed within the subfamily Ceutorhynchinae based on morphological affinities. Very few observations of this genus exist in public databases, with only 9 records on iNaturalist as of the source data. The genus appears to be poorly studied, with limited published information on its biology and ecology.
Ceutorhynchus inaffectatus
Ceutorhynchus inaffectatus is a monophagous weevil that feeds exclusively on Hesperis matronalis (dame's violet). The species demonstrates specialized host plant recognition mediated by specific glucosinolates found in its host. It occurs in north-western Europe, with records from Belgium and Denmark.
Ceutorhynchus nodipennis
Ceutorhynchus nodipennis is a weevil species in the family Curculionidae, first described by Dietz in 1896. It is recorded from North America. The species belongs to a large genus of weevils commonly associated with Brassicaceae plants. Available information on this species is limited, with few documented observations.
Ceutorhynchus pusillus
minute seed weevil
Ceutorhynchus pusillus is a minute seed weevil in the family Curculionidae. It was described by LeConte in 1876. The species is known from North America.
Dietzella
Dietzella is a genus of minute seed weevils in the family Curculionidae, subfamily Ceutorhynchinae. The genus contains two described species: Dietzella zimmermanni and Dietzella sextuberculata. It was established by Champion in 1907 after the original name Coelogaster was found to be preoccupied by an extinct fish genus.
Dietzella zimmermanni
minute seed weevil
Dietzella zimmermanni is a small weevil species in the family Curculionidae. Larvae are known to feed on leaves of specific host plants in the evening primrose family, including Oenothera pilosella, with this association representing the first documented larval host record for the species. The species occurs across North America with records from Canada and the United States.
Homorosoma
minute seed weevils
Homorosoma is a genus of minute seed weevils in the family Curculionidae, established by Frivaldszky in 1894. The genus contains approximately nine described species distributed across Europe and North America. Members are small beetles associated with seed feeding habits typical of the Ceutorhynchinae subfamily.
Pelenomus waltoni
Pelenomus waltoni is a species of weevil in the subfamily Ceutorhynchinae, first described by Boheman in 1843. It was newly recorded from China in a 2013 taxonomic revision, which raised the number of Chinese Pelenomus species from one to six. The species is one of four Pelenomus species newly documented from China in that study, alongside P. canaliculatus, P. quadricorniger, and P. roelofsi.
Rhinoncomimus
Rhinoncomimus is a genus of minute seed weevils in the family Curculionidae, established by Wagner in 1940. The genus comprises approximately eight described species distributed in Eastern Asia, with China representing a center of diversity. One species, R. latipes (the mile-a-minute weevil), has been extensively studied and deployed as a biological control agent for the invasive vine Persicaria perfoliata in North America. The genus is characterized by host associations with Polygonaceae, particularly Persicaria and Polygonum species.
Trichosirocalus
rosette weevils, crown weevils
A genus of small true weevils native to the Palearctic region. Several species have been widely introduced to North America, Australia, and New Zealand as biological control agents for invasive thistles. The genus was historically treated as containing a single species, T. horridus, but integrative taxonomic studies using molecular and morphological data have revealed multiple distinct species with different host associations.
weevilbiological-controlthistleinvasive-species-managementCeutorhynchinaerosette-feederCeutorhynchiniBaridinaetaxonomic-revisionclassical-biological-controlCarduusCirsiumOnopordumPalearctic-nativeintroduced-speciesmolecular-systematicsintegrative-taxonomyunivoltineleaf-mineragricultural-pest-controlpasture-weed-managementspecies-complexhost-specificitymusk-thistleplumeless-thistleScotch-thistleIllyrian-thistlewelted-thistleItalian-thistlecrown-weevilrosette-weeviloviposition-behavioroverwinteringegg-stagelarval-stageadult-stagedecaying-organic-mattersoil-surfacenon-photosynthetic-leavesgreen-leavesleaf-midribspetiolesleaf-miningnotching-damagerosette-survivalflowering-stem-reductionseed-production-reductionrosette-mortalitypopulation-density-effectsmark-recapturedispersal-patternsartificial-diet-rearinglaboratory-culturevitamin-supplementationlyophilized-thistle-rootsergosterolcasein-hydrolysate7-dehydrocholesterolsucroselarval-survivaladult-longevityovipositionfemale-fecundityfield-cage-experimentsindividual-cage-experimentsgrowth-parameter-reductionpre-release-host-specificity-testingpost-release-monitoringestablishment-successrange-expansionforested-areasagricultural-landpasturesmall-farmscropsdisturbed-habitatsmeadowsdense-patchesrosette-size-preferencespatial-distributionselective-ovipositionautumn-egg-layingwinter-larval-developmentspring-pupationlate-summer-adult-emergencesoil-overwinteringplant-debris-overwinteringrachisleaf-dissectiondestructive-samplingnon-destructive-samplingsampling-biaslife-stage-detectionestablished-populationsmitochondrial-COInuclear-EF-1αmorphological-charactershost-plant-associationssynonymyspecies-validityintroduction-historyrelease-recordsestablishment-recordsOld-World-nativeNew-World-introductionSouthern-Hemisphere-introductionAustraliaNew-ZealandNorth-AmericaVirginiaSouthwest-VirginiaEuropeSpainFranceGermanyItalySwitzerlandAustriaScandinaviaDenmarkNorwaySwedenColonnelli-1979Panzer-1801Alonso-Zarazaga-&-Sánchez-Ruiz-2002Ceutorhynchinae-vs-Baridinaesubfamily-placementtribe-placementtrue-weevilsCurculionidaeColeopteraInsectaArthropodaAnimalia882-iNaturalist-observationsGBIF-recordsCatalogue-of-Life-acceptedNCBI-TaxonomyBulletin-of-Entomological-ResearchJournal-of-Applied-EcologyJournal-of-Entomological-ScienceAnnals-of-the-Entomological-Society-of-AmericaEnvironmental-EntomologyDOI-10.1017/s000748531500084xDOI-10.1046/j.1365-2664.2002.00747.xDOI-10.18474/0749-8004-22.4.324DOI-10.18474/0749-8004-22.4.330DOI-10.18474/0749-8004-24.4.465DOI-10.1093/aesa/73.6.694DOI-10.1093/ee/10.5.691Trichosirocalus horridus
Thistle Crown Weevil, Musk Thistle Crown Weevil
Trichosirocalus horridus is a Palearctic weevil introduced to North America in 1974 as a biological control agent for exotic thistles in the genera Cirsium and Carduus. Native to Europe, it has established populations across the United States, particularly in Virginia where it spread from 609 km² in 1981 to 4,345 km² by 1985. Adults feed on thistle rosettes while larvae develop internally in stems and crowns, causing significant damage to host plants. The species has shown nontarget impacts, feeding on native Cirsium species in Nebraska and Tennessee at rates comparable to target weeds.