same mine, lighted from behind

Alnus glutinosa, Amsterdam: part of the first stretch of the corridor

mine

An upper-surface corridor, initially very shallow, gradually widening (often quite broad in the end), not associated with leaf margin or venation; mature mine often with a characteristic brown colouration. Frass in two rows, as usual in Agromyzidae. The gold-coloured larva leaves the mine before pupation, the semicircular exit slit is in the upper epidermis.

host plants

Betulaceae, monophagous

Alnus glutinosa, incana.

phenology

Larvae in June-October; bivoltine, according to Robbins (1991a).

BENELUX

BE observed (Chris Steeman, Paul Fontaine, 2007 in corr.)

NE Can be found in practically every clump of alder trees, but the number of mines per tree is mostly limited.

LUX observed (Ellis: Kautenbach, Dudelange).

distribution within Europe

From Scandinavia to France, and from the UK to Bulgaria (Fauna Europaea, 2007); also Corsica (Buhr, 1941b).

larva

synonyms

Agromyza albitarsis Zetterstedt, 1848, nec Meigen, 1830.

Until about 1970 is was believed that birch and alder shared the same Agromyza, viz. A. alnibetulae. Only then Spencer (1969a) discovered that alnibetulae as then understood was a mix of two species, A. alnibetulae Hendel living only on birch and A. alnivora only on Alder.

references

Abras, Fassotte, Chandelier & Cavelier (2008a), Ahr (1966a), Beiger (1979a), Beuk (2002a), Bland (1992b), Buhr (1932a, 1941b), Černý, Vála & Barták (2001a), Csóka (2003), Drăghia (1968a, 1972a, 1974a), van Frankenhuyzen & Houtman (1972a), van Frankenhuyzen Houtman & Kabos (1982a), Haase (1942a), Hartig (1939a), Hering (1957a), Huber (1969a), Kvičala (1938a), Maček (1999a), Matošević, Pernek, Dubravac & Barić (2009a), de Meijere (1924a, 1925a, 1939a), Michalska (1976a, 2003a), Nowakowski (1954a), Pakalniškis (1982b, 1990), Papp & Černý (2015a), Robbins (1991a), Skala & Zavřel (1945a), Sønderup (1949a), Spencer (1969a, 1971a, 1972a, 1976a), Starke (1942a), Starý (1930a), Surányi (1942a), von Tschirnhaus (1999a), van Wielink (2020a), Zoerner (1969a)