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Heterarthrus vagans (Fallén, 1808) [Hymenoptera: Tenthredinidae] Hylotoma vagans Fallén, 1808 Heterarthrus vagans (Fallén, 1808)

Leaf mine: A large blotch that normally starts at the margin, where some or much frass is ejected (British leafminers). The mine is also illustrated in Nederlandse bladmineerders. Larva: The larva is illustrated in British leafminers and Nederlandse bladmineerders. Pupa: Details unknown. Hosts in Britain: Salicaceae       Alnus cordata Italian Alder British leafminers Alnus cordata Italian Alder Plant, in Pitkin & Plant, 2005 Alnus glutinosa Alder British leafminers Alnus glutinosa Alder Plant, in Pitkin & Plant, 2005 Alnus incana Grey Alder Plant, in Pitkin & Plant, 2005 Hosts elsewhere: Salicaceae       Alnus cordata Italian Alder Nederlandse bladmineerders Alnus glutinosa Alder Nederlandse bladmineerders Alnus incana Grey Alder Nederlandse bladmineerders Alnus x spaethii   Nederlandse bladmineerders Time of year - mines: Univoltine: autumn (British leafminers). Time of year - adults: Unknown. Distribution in Britain: Local and uncommon. Under-recorded due to being masked by the more common Fenusa dohrnii (British leafminers). Recorded in East Kent, Edinburgh, Oxford, Surrey, Warwick and West Kent (NBN Gateway distribution map - NE and SNH). Also recorded in the Republic of Ireland (van Achterberg in Fauna Europaea). Distribution elsewhere: Widespread in Europe including Austria, Belgium, Bulgaria, Corsica, Czech Republic, Danish mainland, Estonia, Finland, French mainland, Germany, Hungary, Italian mainland, Latvia, Luxembourg, Poland, Romania, Russia - Central, Slovakia, Spanish mainland, Sweden, Switzerland, The Netherlands and Ukraine (van Achterberg in Fauna Europaea). Parasitoids: Unknown.

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Last updated 01-Sep-2008  Brian Pitkin