Sunflower-associated
Guides
Cylindrocopturus dehiscens
Cylindrocopturus dehiscens is a species of weevil in the family Curculionidae. It belongs to a genus associated with sunflowers (Helianthus spp.) and related plants in the Asteraceae family. The genus Cylindrocopturus includes several species that are recognized as sunflower pests, particularly as stem-borers during their larval stages.
Cylindrocopturus mediinotus
Cylindrocopturus mediinotus is a species of true weevil in the family Curculionidae. It is found in North America. The species was originally described by Fall in 1906 and has been treated as a synonym of Copturus mediinotus in some taxonomic databases. Like other members of the genus Cylindrocopturus, it is associated with sunflower plants, though specific ecological details for this species are limited in available literature.
Smicronyx centralis
Smicronyx centralis is a species of true weevil in the family Curculionidae, described by Anderson in 1962. It is known from North America, with confirmed records from the Canadian provinces of Alberta and Saskatchewan. Like other members of the genus Smicronyx, it is likely associated with sunflower plants (Helianthus spp.), though specific ecological details for this species remain poorly documented. The genus includes economically important seed weevils that are pests of cultivated sunflower crops.
Stiria rugifrons
Yellow Sunflower Moth
Stiria rugifrons, commonly known as the yellow sunflower moth, is a species of noctuid moth described by Grote in 1874. It belongs to the subfamily Stiriinae within the owlet moth family Noctuidae. The species is distributed across North America, with records from Canada (Alberta, Manitoba, Saskatchewan) and the United States. Its common name suggests an association with sunflower plants, though specific ecological details remain limited in published sources.
Systena hudsonias
black-headed flea beetle, Black-headed Systena
Systena hudsonias is a flea beetle (Chrysomelidae: Alticini) native to North America. Adults are herbivorous and have been documented feeding on at least nine plant families, including Asteraceae species such as sunflowers (Helianthus annuus) and giant ragweed (Ambrosia trifida). The species is considered polyphagous, though specific larval host associations remain poorly documented. It is occasionally noted in agricultural contexts where sunflowers are cultivated.