![]() Hym:Tenthredinidae
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Heterarthrus
vagans (Fallen, 1808)
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Food Plant: Alnus glutinosa (Alder) and Alnus cordata (Italian Alder) Mine: Univoltine: autumn. Pupa: Inside mine in a disc shaped cocoon. Notes: A large blotch that normally starts at the margin, where some or much frass is ejected. Local and uncommon. Under-recorded due to being masked by the more common Fenusa dohrnii. H.vagans mines are generally single whereas F.dohrnii can be multiple. The mine shown is unusual in that it has two larvae in it. Data: 18.ix.2016, Hessle, South-east Yorkshire, VC61 Image:© Barry Warrington |
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sponsored by Colin Plant Associates (UK) LLP/Consultant Entomologists |
www.leafmines.co.uk |