Abstract
Very few sawflies using Gentianaceae as larval host plants have been recorded. We identified larvae collected in Austria onGentiana asclepiadeaL. asTenthredo atraLinnaeus, 1758 andT. propinquaKlug, 1817. If its current taxonomic circumscription as a single species is accepted,T. atrais a highly polyphagous species, whereasT. propinquamay be more specialised:Gentiana asclepiadeais its first recorded host. We sequenced plant DNA from the head of oneT. propinqualarva, which confirmed that it had been feeding on this plant. This is the first recorded use ofG. asclepiadeaby sawfly larvae. Larvae are illustrated, and identification characters are described.
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