Species Details

Ceutorhynchus rapae

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

SeasonalityOne generation per year. Adults emerge from hibernation in April or May (Blatchley & Leng 1916). Newly emerged adults appear in June (Blatchley & Leng 1916) and have been collected into July. IdentificationAccording to Blatchley & Leng (1916), adults are oblong-oval, and black overall with white scales. The dorsal surface is covered in small narrow scales, while the ventral surface is covered with larger wider scales. The funicle (antennal segments between the scape and the clubbed) is seven segmented with the first and second segments being longer than the third and forth together. The beak is slender, cylindrical and about the length of head and thorax combined. The hind femora are toothed. Length 2.7 – 3.2 mm.

Scientific Name Ceutorhynchus rapae Habitat This species is cosmopolitan and occurs wherever its host plants exist (Anderson 1997). Seasonality One generation per year. Adults emerge from hibernation in April or May (Blatchley & Leng 1916). Newly emerged adults appear in June (Blatchley & Leng 1916) and have been collected into July. Identification
According to Blatchley & Leng (1916), adults are oblong-oval, and black overall with white scales. The dorsal surface is covered in small narrow scales, while the ventral surface is covered with larger wider scales.…
According to Blatchley & Leng (1916), adults are oblong-oval, and black overall with white scales. The dorsal surface is covered in small narrow scales, while the ventral surface is covered with larger wider scales. The funicle (antennal segments between the scape and the clubbed) is seven segmented with the first and second segments being longer than the third and forth together. The beak is slender, cylindrical and about the length of head and thorax combined. The hind femora are toothed. Length 2.7 – 3.2 mm.
Life History
The adults overwinter and emerge in the spring to lay eggs in the stems of their host plants (Blatchley & Leng 1916). The eggs hatch in five to eight days (Blatchley & Leng 1916). The larvae feed within the stems and…
The adults overwinter and emerge in the spring to lay eggs in the stems of their host plants (Blatchley & Leng 1916). The eggs hatch in five to eight days (Blatchley & Leng 1916). The larvae feed within the stems and roots of their host plants (Anderson 1997). The larvae pupate in tiny earthen cocoons just below the soil surface (Blatchley & Leng 1916). The time of development between egg and adult is six to seven weeks (Blatchley & Leng 1916).
Conservation This species is cosmopolitan in distribution (Anderson 1997) and in no need of conservation. Diet Info This weevil has been found on several members of the mustard family (Brassicaceae) as well as Cannabis sativa L. (Colonnelli 2004). They seem to prefer wild mustards to cultivated forms (Blatchley & Leng 1916). Range
This species is native to the old world but was introduced to New England in the 1850s (Blatchley & Leng 1916). It has since become widespread in the new world and achieved a Holarctic distribution (Anderson 1997;…
This species is native to the old world but was introduced to New England in the 1850s (Blatchley & Leng 1916). It has since become widespread in the new world and achieved a Holarctic distribution (Anderson 1997; Colonnelli 2004).
Ceutorhynchus rapae
Ceutorhynchus rapae

Citation

Page Citation for Ceutorhynchus rapae

Page Citation

"Ceutorhynchus rapae, University of Alberta E.H. Strickland Entomological Museum." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/g/2-6151. Accessed 22 Sep. 2021.

Taxonomic Hierarchy

Kingdom Animalia Phylum Arthropoda Class Hexapoda Subclass Insecta Order Coleoptera Suborder Polyphaga Family Curculionidae Genus Ceutorhynchus Species Ceutorhynchus rapae
This hierarchy is created from our museum records, it may not always accurately reflect modern taxonomies.

Taxonomic Hierarchy for University of Alberta E.H. Strickland Entomological Museum