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Hydrellia cochleariae Haliday, 1839
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the short mines contain little frass

Food Plant: Stratiotes species (Water Soldier), Hydrocharis morsus-ranae (Frogbit)?, Callitriche species (Water Star-wort)?

Mine: March onwards

Notes: Makes short, straight mines, with little frass (as shown). The larva crosses from leaf to leaf through the stem. It pupates in the stalk, rarely in the leaf

Data: 16.vi.2010, Namur, Houyet, Belgium

Image:© Jean-Yves Baugnée

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