October 2024
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The Entomologist s monthly magazine
Five species of sawfly are recorded for the first time from the Shetland Islands, four of which were found in a planted woodland first established in 1996. All five use shrubs and trees as larval hosts: two are attached to Alnus Mill., and three exclusively or mainly to Salix L. Whereas the Alnus -feeders have almost certainly been introduced to Shetland, the history of the Salix -feeders in the archipelago is unclear. Pristiphora sermola Liston, 1993, is faunistically noteworthy, having previously been recorded in the British Isles from only two localities in the Scottish mainland. With these additions, the known sawfly fauna of Shetland now comprises 13 established species, with one more needing confirmation.