Tychius liljebladi

Tychius liljebladi can be distinguished from the related T. tectus by host plant associations; both species utilize Astragalus species, but T. liljebladi has been specifically recorded from Astragalus and Oxytropis hosts belonging to Eurasian groups. It is distinguished from members of the semisquamosus group by its closer phylogenetic alliance to Eurasian Tychius species rather than to other North American lineages. Detailed morphological diagnostic characters are not provided in available sources.

Associated with host plants in the legume genera Astragalus and Oxytropis. These host relationships suggest occupancy of open habitats where these legumes occur, though specific habitat requirements are not documented.

Recorded from Canada: Alberta, Manitoba, Québec, and Saskatchewan. Distribution appears centered in central and western Canada, with phylogenetic evidence suggesting a more recent arrival in North America compared to other Tychius species.

Feeds on species of Oxytropis and Astragalus, specifically those belonging to Eurasian groups within these genera.

• Oxytropis - host plantEurasian species groups
• Astragalus - host plantEurasian species groups

• Tychius tectusBoth species are closely allied to Eurasian relatives and share Astragalus host plants; T. tectus differs in also utilizing native North American Astragalus groups and appears to be expanding its range at the expense of semisquamosus group members
• Tychius semisquamosus group membersT. liljebladi is phylogenetically distinct from this North American group, which arrived earlier and is associated with native North American Astragalus groups or Lotus

• BugGuide
• GBIF taxonomy match
• iNaturalist taxon
• Catalogue of Life
• North American Tychius: New synonymy and observations on phylogeny and zoogeography (Coleoptera: Curculionidae)