Tychiini
Guides
Lignyodes
Ash Seed Weevils
Lignyodes is a genus of weevils in the family Curculionidae, commonly known as ash seed weevils. The genus contains more than 30 described species. Members of this genus are associated with ash trees (Fraxinus spp., Oleaceae) as host plants. The genus was established by Dejean in 1835.
Tychius tectus
leguminous seed weevil
Tychius tectus is a species of leguminous seed weevil in the family Curculionidae, first described by LeConte in 1876 from North America. The species has been recorded from both North America and China, representing a transcontinental distribution pattern within the Holarctic region. As a member of the genus Tychius, it belongs to a group of weevils specialized on leguminous plants (Fabaceae). No specific biological or ecological studies have been published for this species.