Agromyza nana Meigen, 1830
Medicago sativa, Hongarije, Mosonmagyaróvár, 18.iv.2915 © László Érsek
detail
opened mine
larva
Trifolium pratense, Hungary, Mosonmagyaróvár, 9.v.2014 © László Érsek
detail
Trifolium repens, Flevoland, Reve-Abbertbos © Hans Jonkman; occupied mine
mine with resting larva
Trifolium repens, Beuningen: two vacated mines
Medicago lupulina, Nieuwendam: mine with the characteristically squat larva
Medicago sativa, België, prov. Luik, Flémalle-Haute ©
Jean-Yves Baugnée
Medicago sativa, Belgium, prov. Liège, Flémalle-Haute © Jean-Yves Baugnée
Melilotus cf officinalis, Amsterdam Noord, JH Vliegenbos: mine with pupa of parasitoid
mine
Broad and short hook-like upper-surface corridor, ending in a blotch in the centre of a leaflet. The blotch is upper-surface as well, but has some deep spots, giving the mine a mottled appearance when hold against the light. Frass in the blotch in a few large lumps. Pupation outside the mine.
host plants
Fabaceae, oligophagous
Anthyllis; Lotus ornithopodioides; Medicago falcata, lupulina, minima, polymorpha, sativa, truncatula, varia; Melilotus albus, altissimus, messanensis, officinalis; Onobrychis viciifolia; Securigera varia, securidacea; Trifolium alpestre, campestre, fragiferum, hybridum, incarnatum, medium, montanum, ochroleucon, pratense, repens, stellatum; Trigonella; Vicia cracca, dumetorum, hirsuta, sativa, sylvatica.
The reference to Oxalis by Benavent ao (2004a) and Gil Ortiz (2009a) must be a mistake – in the vegetative state confusion with Trifolium can be imagined. Also some old references to Genista are not very probable.
phenology
Larvae from June to October (Hering, 1957a).
BENELUX
BE recorded (Scheirs, De Bruyn & von Tschirnhaus, 1996a).
NE recorded (de Meijere, 1924a, 1939a).
LUX recorded (Ellis: Kautenbach).
distribution within Europe
Entire Europe west of the line North Cape – Ukraine (Fauna Europaea, 2007).
larva
synonyms
Domomyza nana; Agromyza medicaginis Robineau-Desvoidy, 1851; A. trifolii Kaltenbach, 1872; A. anthracipes (Rondani, 1875); A. brevinervis (Rondani, 1875).
parasitoids, predators
Diglyphus isaea; Pnigalio soemius.
notes
The full-grown larva remains without feeding for one or two days in the centre of the mine, before leaving it for pupation (Spencer, 1976a).
Very occasionally a pest on clover and alfalfa (Darvas, Skuhravá & Andersen, 2000a: Spencer, 1973b).
The mine can easily be confused with the one of the much rarer Parectopa ononidis; see there for differentiating characters.
references
Amsel & Hering (1931a, 1933a), Andersen (2016a), Banthorpe, Edmunds & Warrington (2020a), Beiger (1955a, 1960a, 1965a, 1970a, 1979a), Benavent, Martínez, Moreno & Jiménez (2004a), Beuk (2002a), Bland (1992b), Buhr (1932a, 1941b, 1964a), Černý (2004a, 2007a, 2011a), Černý, Andrade, Gonçalves & von Tschirnhaus (2018a), Černý, Barták & Vaněk (2009a), Černý & Merz (2005a, 2006a, 2007a), Černý & Vála (1999a, 2006a), Černý, Vála & Barták (2001a), Ci̇velek, Çikman & Dursun (2008a), Dempewolf (2004a), Drăghia (1967a, 1974a), van Frankenhuyzen Houtman & Kabos (1982a), Gil Ortiz (2009a), Haase (1942a), Hartig (1939a), Hering (1924a,b, 1927a, 1930b, 1955b, 1957a, 1963a,b, 1967a), Huber (1969a), Kabos (1971a), Kvičala (1938a), Maček (1999a), Manning (1956a), de Meijere (1924a, 1925a, 1939a), Michalska (1972a, 1976a, 2003a), Nowakowski (1954a), Papp & Černý (2015a), Pârvu (2005a), Popescu-Gorj & Drăghia (1966a), Rydén (1956a), Scheirs, De Bruyn & von Tschirnhaus (1996a, 1999a), Skala (1941a), Skala & Zavřel (1945a), Sønderup (1949a), Spencer (1953a, 1954d, 1966b, 1967a, 1972a,b, 1973c, 1974a, 1976a), Stammer (2016a), Starke (1942a), Starý (1930a), Süss (1982a), von Tschirnhaus (1982a, 1999a), Ureche (2010a), Utech (1962a), Zoerner (1969a).