Beringian-dispersal
Guides
Tychius lineellus
leguminous seed weevil
Tychius lineellus is a leguminous seed weevil in the family Curculionidae. It belongs to a group of North American Tychius species thought to have dispersed from Eurasia via Beringia. The species is probably related to T. sordidus and T. caesius, which are considered remnants of an old Holarctic fauna associated with the Arcto-Tertiary flora.