Phyllonorycter rajella (Linnaeus, 1758)

common alder midget

Phyllonorycter rajella mine

Alnus glutinosa, Nieuwendam

Phyllonorycter rajella mine

same mine, lighted from behind

mine

Lower-surface tentiform mine, not longer than 20 mm, usually in the axil of a thick lateral vein, with 1 strong length fold. Pupa in a a tough off-white cocoon that is fastened to the floor and the roof of the mine. (Almost) all frass is incorporated in the sides of the cocoon (visible with a loupe in transparancy as two dark lines). In autumn not infrequently five or more mines in one leaf.

hostplants

Betulaceae, monophagous

Alnus cordata, glutinosa, incana, rubra, viridis.

phenology

Two generations per year; larvae in June and July (van Frankenhuyzen & Freriks, 1976a).

BENELUX

BE recorded (Phegea, 2009).

NE recorded (Kuchlein & de Vos, 1999a; Microlepidoptera.nl, 2009).

LUX recorded (Fauna Europaea, 2009).

distribution within Europe

Entire Europe, with exception of the Iberian Peninsula and Greece (Fauna Europaea, 2009).

larva

Pale green.

pupa

synonyms

Lithocolletis rajella; Phyllonorycter alnifoliella (Hübner, 1796); Ph. alniella (Zeller, 1946a).

references

Ahr (1966a), Bengtsson & Johansson (2011a), Buhr (1935a, 1964a), Buszko (1992b), Buszko & Beshkov (2004a), Deutschmann (2008a), van Frankenhuyzen & Freriks (1976a), van Frankenhuyzen & Houtman (1972a), van Frankenhuyzen Houtman & Kabos (1982a), Gregor & Patočka (2001a), Gregor & Povolný (1950a), Haase (1942a), Hering (1932a, 1947a, 1957a, 1962a), Huber (1969a), Jaworski (2009a), Klimesch (1950c), Kuchlein & Donner (1993a), Kuchlein & de Vos (1999a), A & Z Laštůvka (2011a), Lhomme (1934b), Maček (1999a), Matošević, Pernek, Dubravac & Barić (2009a), Michalska (1976a), Nel & Varenne (2014a), Nowakowski (1954a), Patočka & Turčáni (2005a), De Prins & Steeman (2011a), Robbins (1991a), Schütze (1931a), Skala (1951a), Sønderup (1949a), Stammer (2016a), Starý (1930a), Szőcs (1977a), Tourlan (1980a), Triberti & Braggio (2011a), Yefremova & Kravchenko (2015a), Zoerner (1969a, 1970a).

mod 17.ii.2018