Very few sawflies using Gentianaceae as larval host plants have been recorded. We identified larvae collected in Austria on Gentiana asclepiadea L. as Tenthredo atra Linnaeus, 1758 and T. propinqua Klug, 1817. If its current taxonomic circumscription as a single species is accepted, T. atra is a highly polyphagous species, whereas T. propinqua may be more specialised: Gentiana asclepiadea is its first recorded host. We sequenced plant DNA from the head of one T. propinqua larva, which confirmed that it had been feeding on this plant. This is the first recorded use of G. asclepiadea by sawfly larvae. Larvae are illustrated, and identification characters are described.

中文翻译：

---

以龙胆为食的两种欧洲Tenthredo物种（膜翅目，Tenthredinidae）的生物学

很少有使用龙胆科作为幼虫寄主植物的锯齿。我们确定了在奥地利的Gentiana asclepiadea L.上收集的幼虫为Tenthredo atra Linnaeus（1758年）和T. propinqua Klug（1817年）。如果目前接受的分类学定性为单个物种，则T. atra是高度多食性物种，而T. propinqua也许更专业：龙胆Gentiana asclepiadea是它的第一个记录寄主。我们从一个T. propinqua幼虫的头部测序了植物DNA，这证实它已经以这种植物为食。这是锯蝇幼虫首次记录的使用G. asclepiadea。图示了幼虫，并描述了识别字符。