Cerodontha iraeos (Robineau-Desvoidy, 1851)

Iris pseudacorus, Dronten © Arnold Grosscurt

high in the mine the puparium is visible….

low the single black lump comprising all the frass
mine
Irregularly corridor, essentially parallel to the leaf shape. Mine white when seen from above, uniformly greenish when seen lighted from behind. Frass in one, rarely more, big black lump. Larva solitary. Pupation in the mine; puparium parallel to the leaf venation.
hostplants
Iridaceae, narrowly monophagous
Iris pseudacorus.
In gardens also I. sibirica.
Chałańska ao report the species also from Iris x germanica. Surányi (1942a) and Kabos (1971a) also mention Typha latifolia as a host plant; this is intriguing, since no single Cerodontha is known to occur on Typha (Nowakowski, 1973a). Benavent, Martínez, Moreno & Jiménez (2004a) mention, next to Iris, also Belamcanda, Gladiolus and Typha; confirmation is urgently needed here.
phenology
Larvae in June-October (Nowakowski, 1973a).
BENELUX
BE recorded (De Bruyn & von Tschirnhaus, 1991a).
NE recorded (de Meijere, 1924a [as Dizygomya morosa], 1939a).
LUX recorded (Ellis: Kautenbach).
distribution within Europe
From Scandinavia to the Iberian Peninsula, and from Ireland to Belarus and Roumania (Fauna Europaea, 2007); also Corsica (Buhr, 1941b).
larva
puparium
synonyms
C. ircos; C. ireos: misspelling; Phytobia iraeos; Dizygomyza morosa: de Meijere, 1925a.
notes
Member of the subgenus Dizygomyza (Nowakowski, 1973a).
references
Allen (1958a), Andersen (2012a), Andersen & Jonassen (1994a), Beiger (1979a), Benavent, Martínez, Moreno & Jiménez (2004a), Beuk (2002a), Bland (1992b, 1994b), De Bruyn & von Tschirnhaus (1991a), Buhr (1932a, 1941b, 1964a), Černý (2001a), Černý, Andrade, Gonçalves & von Tschirnhaus (2018a), Černý & Merz (2006a, 2007a), Černý & Vála (1999a), Chałańska, Łabanowski & Soika (2006a), Dempewolf (2001a), Dursun, Civelek, Barták ao (2015a), Eiseman & Lonsdale (2018a), van Frankenhuyzen Houtman & Kabos (1982a), Griffiths (1962a), Hering (1955b, 1957a), Huber (1969a), Kabos (1971a), Kvičala (1938a), Manning (1956a), de Meijere (1925a, 1939a), Michalska (1970a, 1976a), Nowakowski (1973a), Pakalniškis (1986a, 1998a), Papp & Černý (2016a), Popescu-Gorj & Drăghia (1966a), Robbins (1991a), Sasakawa (1961a), Scheirs, De Bruyn & Verdyck (1993a), Skala & Zavřel (1945a), Sønderup (1949a), Spencer (1972a, 1976a), Starke (1942a), Starý (1930a), Stolnicu (2008a), Süss (1999a), Surányi (1942a), von Tschirnhaus (1999a), Zoerner (1969a).