European Lep:Nepticulidae
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Stigmella nivenburgensis (Preissecker, 1942)
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mine runs along the midrib
enlarged view of mine

Food Plant: Salix alba (White Willow), S. babylonica (Weeping Willow) , S x fragilis (Crack Willow), S x salamonii (Weeping Willow), S triandra (Almond Willow)

Egg: laid either side of the leaf

Mine: July-August; September-October

Notes: The early mine usually follows the midrib or vein under the leaf and hardly visible. It then becomes upper surface and may double back or wander in the leaf blade. The yellow larva feeds venter uppermost and frass is deposited in a broad central strip, which occupies at least half the mine. The larva exits the leaf through a slit in the lower epidermis. First discovered in 2017 in the Netherlands by Ben van As. Mine shown on S x fragilis (Crack Willow).

Data: 08.ix.2020, Leersum (Province Utrecht), The Netherlands

Image:© Ben van As

References:
Hering, EM (1957), Bestimmunstabellen der Blattminen von Europa
Johansson, R, Nielsen, E S, van Nieurkerken, E J and Gustafsson, B (1990) - The Nepticulidae and Opostegidae (Lepidoptera) of North West Europe

sponsored by Colin Plant Associates (UK) LLP/Consultant Entomologists

www.leafmines.co.uk