Hym:Tenthredinidae
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Heterarthrus cuneifrons Altenhofer & Zombori, 1987
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two mines coalesce
mine develops futher
pupal discs are formed

 

Food Plant: Acer pseudoplatanus (Sycamore)

Egg: laid in the centre of the leaf

Mine: early Summer

Notes: Forms a large central blotch mine, which rarely reaches the leaf edge. The pupa forms inside a disc in the mine, which is made furthest away from the leaf centre. First discovered in Kent in 2005. It is a scarce leaf miner in Europe. The original mines coalesce and develop through to the pupal disc stage (as shown).

Data: 31-5-2015 (top); 08.vi.2015 (middle & bottom photo), ex. mine 23.v.2015, Volkegembos-t' Ename, (Oost-Vlaanderen) Belgium

Image:© Carina van Steenwinkel

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

www.leafmines.co.uk