Dicerura iridis (Kaltenbach, 1873)
Iris pseudacorus, Belgium, prov. Hainaut, Chimay, RN Étang de Virelles © Sébastien Carbonnelle
The larvae live in small groups in a small cavilty in the leaf, feeding through external digestion; pupation in the cavity. The adjacent leaf tissue has got a yellow to brown discolouration.
Larvae in June and September (Hering, 1957a); however, the picture above was taken end of March!
Not known from the Benelux countries (Fauna Europaea, 2007), but see above.
distribution within Europe
UK; Denmark, Germany, Czechia; Latvia, Lithuania (Fauna Europaea, 2007).
Larvae elongated, narrow, orange yellow. Penultimate abdominal segments with a pair of conspicuous long prolongations.
spatula (from Möhn, 1955a)
Iridomyza, Dicerura, kaltenbachii Rübsaamen, 1899.
Barnes (1948a), Hering (1957a), Kieffer (1901c), Möhn (1955a), Skuhravá (2006a), Skuhravá & Skuhravý (2021a: 140), Meyer & Jaschhof (1999a), Pakalniškis, Rimšaitė, Sprangauskaitė-Bernotienė ao (2000a), Rübsaamen (1899a).