Sitona
Guides
Pygostolus
Pygostolus is a genus of braconid wasps in the subfamily Blacinae, comprising approximately eight described species. The genus is best known through studies of P. falcatus, an endoparasitoid of weevils in the genus Sitona. These wasps exhibit thelytokous parthenogenesis and develop as solitary endoparasitoids within the haemocoele of their hosts. The genus has been investigated for biological control applications, particularly against sweetclover weevil (Sitona cylindricollis), though effectiveness is limited by phenological asynchrony and diapause.
Sitona aquilonius
Sitona aquilonius is a species of weevil in the family Curculionidae, described by Bright in 1994. It is known from high-latitude regions of North America including Alaska, the Yukon Territory, and the Northwest Territories. Like other members of the genus Sitona, it is expected to be associated with leguminous plants, though specific host records for this species are not documented in available sources.
Sitona cockerelli
Sitona cockerelli is a weevil species in the family Curculionidae, originally described by Blaisdell in 1938. According to GBIF taxonomy, this name is currently treated as a synonym of Sitones californius. The genus Sitona includes species associated with leguminous plants, though specific details for S. cockerelli are sparse in the available literature.