Minute seed weevils
(Ceutorhynchus spp.)
Overview • Description • Distribution • Taxonomy
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Overview
Ceutorhynchus is a very large genus of very small weevils. It is the largest genus of minute seed weevils (subfamily Ceutorhynchinae). They occur across Europe and North America. There are at least 400 described Ceutorhynchus species worldwide, 68 species in North America north of Mexico, and at least 10 species in Minnesota.
Adults are active in the spring and summer. They are found mostly on plants in the mustard (Brassicaceae) family. A few are agricultural pests, harming seed crops of cabbage, turnip, and rutabaga. The cabbage seedpod weevil (Ceutorhynchus obstrictus) is a serious pest of canola and oilseed rape in North America..
Description
Adults are very small, 1⁄16″to ⅛″ (2 to 4 mm) in length. The beak-like projection of the head containing the mouthparts (rostrum) is slender, curved, and very long, about half as long as the body. The antennae have 11 segments and are elbowed and clubbed. The last part of the leg (tarsus), corresponding to the foot, has 5 segments. At the end of the last tarsal segment there are two claws.
Distribution |
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Sources Biodiversity occurrence data published by: Minnesota Biodiversity Atlas (accessed through the Minnesota Biodiversity Atlas Portal, bellatlas.umn.edu, 10/29/2025). |
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| 10/29/2025 | ||
Taxonomy
Order
Coleoptera (beetles)
Suborder
Polyphaga (water, rove, scarab, long-horned, leaf, and snout beetles)
Infraorder
Cucujiformia
Superfamily
Curculionoidea (snout and bark beetles)
Family
Curculionidae (true weevils)
Subfamily
Ceutorhynchinae (minute seed weevils)
Tribe
Ceutorhynchini
Subordinate Taxa
American weevil (Ceutorhynchus americanus) 
Barkalov’s minute seed weevil (Ceutorhynchus barkalovi)
Bolter’s minute seed weevil (Ceutorhynchus bolteri)
cabbage curculio (Ceutorhynchus rapae)
cabbage seedpod weevil (Ceutorhynchus obstrictus)
cabbage seedstalk curculio (Ceutorhynchus quadridens)
cabbage stem weevil (Ceutorhynchus pallidactylus)
cattail minute seed weevil (Ceutorhynchus typhae)
convex-winged minute seed weevil (Ceutorhynchus convexipennis)
copper minute seed weevil (Ceutorhynchus cupreus)
deliberating minute seed weevil (Ceutorhynchus dubitans)
disturbed minute seed weevil (Ceutorhynchus disturbatus)
hairy minute seed weevil (Ceutorhynchus subpubescens)
half-red minute seed weevil (Ceutorhynchus semirufus)
Hamilton’ minute seed weevil (Ceutorhynchus hamiltoni)
Handford’s minute seed weevil (Ceutorhynchus handfordi)
Hearne’s minute seed weevil (Ceutorhynchus hearnei)
LeConte’s minute seed weevil (Ceutorhynchus lecontei)
medial minute seed weevil (Ceutorhynchus medialis)
minute seed weevil (Ceutorhynchus anthonomoides)
minute seed weevil (Ceutorhynchus erwini)
minute seed weevil (Ceutorhynchus erysimi)
minute seed weevil (Ceutorhynchus inaffectatus)
minute seed weevil (Ceutorhynchus nodipennis)
minute seed weevil (Ceutorhynchus pusillus)
minute seed weevil (Ceutorhynchus pusio)
minute seed weevil (Ceutorhynchus scrobicollis)
Munk’s minute seed weevil (Ceutorhynchus munki)
mysterious minute seed weevil (Ceutorhynchus opertus)
neglected minute seed weevil (Ceutorhynchus neglectus)
omitted minute seed weevil (Ceutorhynchus omissus)
Oregon minute seed weevil (Ceutorhynchus oregonensis)
oval-winged minute seed weevil (Ceutorhynchus ovipennis)
quercetin weevil (Ceutorhynchus querceti)
scaly minute seed weevil (Ceutorhynchus squamosulus)
shepherd’s purse minute seed weevil (Ceutorhynchus erysimi)
squamous minute seed weevil (Ceutorhynchus squamatus)
standard minute seed weevil (Ceutorhynchus pauxillus)
unseen minute seed weevil (Ceutorhynchus invisus)
Zimmermann’s minute seed weevil (Ceutorhynchus zimmermanni)
Synonyms
Botezatia
Centhorhynchus
Centorhynchus
Centrorhynchus
Ceuthorhynchideus
Ceuthorhynchus
Ceuthorrhynchidius
Ceuthorrhynchos
Ceuthorrhynchus
Ceuthorynchus
Ceutorhychidius
Ceutorhynchu
Ceutorynchidius
Ceutorynchus
Cryptorhynchus
Cryptorynchus
Dionoremus
Dionorenus
Ensifer
Falsiger
Heorhynchus
Heterosirocalus
Marklissus
Neosirocalis
Persirocalus
Common Names
This genus has no common name. The common name for the family Curculionidae is minute seed weevils, and it is applied here for convenience.
Glossary
Rostrum
The stiff, beak-like projection of the carapace or prolongation of the head of an insect, crustacean, or cetacean.
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