Species Details

Ceutorhynchus obstrictus

University of Alberta E.H. Strickland Entomological Museum Read more about this collection »

Common NameCabbage seedpod weevil SeasonalityOne generation per year. Ceutorhynchus obstrictus is common from late May to late August. IdentificationAdults have round grey bodies (2-4 mm in length) and grey legs covered with fine white scales. Ceutorhynchus obstrictus has a long curved proboscis with small bent antennae. When disturbed, it displays the interesting behavior of folding its legs and proboscis against its body to make it look like a small grey pebble. Similar in appearance to its co-generic C. neglectus it can be differentiated by its bigger size and grey body color.

Scientific Name Ceutorhynchus obstrictus Common Name Cabbage seedpod weevil Habitat Agricultural areas where oilseed is produced, roadside ditches, disturbed weedy areas. Seasonality One generation per year. Ceutorhynchus obstrictus is common from late May to late August. Identification
Adults have round grey bodies (2-4 mm in length) and grey legs covered with fine white scales. Ceutorhynchus obstrictus has a long curved proboscis with small bent antennae. When disturbed, it displays the…
Adults have round grey bodies (2-4 mm in length) and grey legs covered with fine white scales. Ceutorhynchus obstrictus has a long curved proboscis with small bent antennae. When disturbed, it displays the interesting behavior of folding its legs and proboscis against its body to make it look like a small grey pebble. Similar in appearance to its co-generic C. neglectus it can be differentiated by its bigger size and grey body color.
Life History
Single spheroid eggs are deposited into immature crucifer (Brassica sp.) pods. Larvae undergo three larval instars within the pods and feed on developing seeds. Mature larvae bore out the side of the pod and burrow…
Single spheroid eggs are deposited into immature crucifer (Brassica sp.) pods. Larvae undergo three larval instars within the pods and feed on developing seeds. Mature larvae bore out the side of the pod and burrow into the soil. Adults emerge 10-14 days after pupation begins. Adults feed for the remainder of the season on pods and flowers storing fats for overwintering (Dmoch 1965).
Conservation Not a concern. Ceutorhynchus obstrictus is common and considered a serious pest throughout most of its range. Diet Info
Larvae feed on seeds within pods of large crucifers (Brassica sp.). Adults feed on flowers, pods, or young cotyledons of crucifers (Brassica rapa, Brassica napus, Descurainia sophia, Lepidium draba, Sinapis alba,…
Larvae feed on seeds within pods of large crucifers (Brassica sp.). Adults feed on flowers, pods, or young cotyledons of crucifers (Brassica rapa, Brassica napus, Descurainia sophia, Lepidium draba, Sinapis alba, Thlaspi arvense), especially canola or oilseed crops (Fox and Dosdall 2003).
Range
Native to Europe, it can be found from Scandinavia to the Mediterranean and England to Russia and is common anywhere oilseed is being produced (Hill 1987). In North America it is thought to occur all across the U.S.…
Native to Europe, it can be found from Scandinavia to the Mediterranean and England to Russia and is common anywhere oilseed is being produced (Hill 1987). In North America it is thought to occur all across the U.S. as well as into southern British Columbia, Alberta, Saskatchewan, Ontario and Quebec (Laffin et al. 2005).

Citation

Page Citation for Ceutorhynchus obstrictus

Page Citation

"Species Details - Ceutorhynchus obstrictus, University of Alberta E.H. Strickland Entomological Museum." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/g/2-5440. Accessed 28 Mar. 2024.

Authorship

Name Laffin, R. D.
Role species page author
Date 2005

References

Specimen Information

There are 46 specimens of this Species.

46 results plotted on map in 20 markers.
Note: Only records with latitude and longitude coordinates are plotted on map.

UASM53240 - Ceutorhynchus obstrictus

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: British Columbia, Kelowna Collected ByLaffin, R. D. Date Collected2002-06-02

UASM53241 - Ceutorhynchus obstrictus

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: British Columbia, Kelowna Collected ByLaffin, R. D. Date Collected2002-06-02

UASM53242 - Ceutorhynchus obstrictus

University of Alberta E.H. Strickland Entomological Museum

Place CollectedUnited States: Idaho, Latah county, Moscow Collected ByHarmon, B. Date Collected2002-06-14

UASM53243 - Ceutorhynchus obstrictus

University of Alberta E.H. Strickland Entomological Museum

Place CollectedUnited States: Idaho, Latah county, Moscow Collected ByHarmon, B. Date Collected2002-06-14

UASM53244 - Ceutorhynchus obstrictus

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: British Columbia, Creston Collected ByDosdall, L. Date Collected2002-06-04

UASM53245 - Ceutorhynchus obstrictus

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: British Columbia, Creston Collected ByDosdall, L. Date Collected2002-06-04

UASM53246 - Ceutorhynchus obstrictus

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Lethbridge Collected ByKalischuck, A. Date Collected2002-06-02

UASM53247 - Ceutorhynchus obstrictus

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Lethbridge Collected ByKalischuck, A. Date Collected2002-06-02

UASM53248 - Ceutorhynchus obstrictus

University of Alberta E.H. Strickland Entomological Museum

Place CollectedUnited States: Montana, Pondera county, Conrad Collected ByRolston, M. Date Collected2002-06-20

UASM53249 - Ceutorhynchus obstrictus

University of Alberta E.H. Strickland Entomological Museum

Place CollectedUnited States: Montana, Pondera county, Conrad Collected ByRolston, M. Date Collected2002-06-20

UASM53250 - Ceutorhynchus obstrictus

University of Alberta E.H. Strickland Entomological Museum

Place CollectedUnited States: Alabama, Madison county, Madison Collected ByWard, N. Date Collected2002-06-04

UASM53251 - Ceutorhynchus obstrictus

University of Alberta E.H. Strickland Entomological Museum

Place CollectedUnited States: Alabama, Madison county, Madison Collected ByWard, N. Date Collected2002-06-04

UASM53252 - Ceutorhynchus obstrictus

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Ontario, Elora Collected ByMason, P. Date Collected2003-07-29

UASM53253 - Ceutorhynchus obstrictus

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Ontario, Elora Collected ByMason, P. Date Collected2003-07-29

UASM53254 - Ceutorhynchus obstrictus

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Ontario, Hereward Collected ByMason, P. Date Collected2002-07-06

UASM53255 - Ceutorhynchus obstrictus

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Ontario, Hereward Collected ByMason, P. Date Collected2002-07-06

UASM53256 - Ceutorhynchus obstrictus

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Quebec, Quatre Chemins Collected ByMason, P. Date Collected2002-05-23

UASM53257 - Ceutorhynchus obstrictus

University of Alberta E.H. Strickland Entomological Museum

Place CollectedEngland: Hertfordshire, Rothamsted Collected ByFergusen, A. Date Collected2002-05-20

UASM53258 - Ceutorhynchus obstrictus

University of Alberta E.H. Strickland Entomological Museum

Place CollectedEngland: Hertfordshire, Rothamsted Collected ByFergusen, A. Date Collected2002-05-20

UASM53259 - Ceutorhynchus obstrictus

University of Alberta E.H. Strickland Entomological Museum

Place CollectedSweden: Vastmanland, Kolbeck Collected ByNilsson, C. Date Collected2002-06-06

UASM53260 - Ceutorhynchus obstrictus

University of Alberta E.H. Strickland Entomological Museum

Place CollectedSweden: Vastmanland, Kolbeck Collected ByNilsson, C. Date Collected2002-06-06

Adult Seasonal Distribution