Equisetum
Guides
Grypus equiseti
horsetail weevil
Grypus equiseti is a weevil species native to Europe that feeds exclusively on horsetail plants (Equisetum spp.). It has been introduced to New Zealand as a biological control agent targeting field horsetail (Equisetum arvense), an invasive weed in that country. The species is notable for its specialized diet and documented success in classical biological control programs.
Hippuriphila canadensis
Horsetail Flea Beetle
A small flea beetle in the family Chrysomelidae, first described by W.J. Brown in 1942. The species is endemic to North America with confirmed records from western Canadian provinces including Alberta, British Columbia, and Manitoba. As a member of the genus Hippuriphila, it is associated with horsetail plants (Equisetum), though specific host relationships for this species remain poorly documented. The common name reflects this presumed ecological association.
Hippuriphila equiseti
Hippuriphila equiseti is a flea beetle in the family Chrysomelidae, first described by Beller and Hatch in 1932. It belongs to a small genus of specialized beetles associated with aquatic or semi-aquatic host plants. The species is documented from western Canada and is likely associated with horsetail rushes (Equisetum), as suggested by both its specific epithet and the genus name Hippuriphila (meaning 'horse-tail loving').