Trachys minutus (Linnaeus, 1758)
on woody plants
Crataegus monogyna, Belgium, prov. Limbourg, Maasmechelen, Maaswinkel, 7.vi.2020 © Carina Van Steenwinkel: three (very) young mines
Corylus avellana, Belgium, prov. Namur, Lavaux-Sainte-Anne, Gros Tienne,7.ix.2013 © Carina Van Steenwinkel
Salix alba, Hungary, Halászi, 26.v.2018 © László Érsek
the pupa lies in the mine without a cocoon
Salix cinerea, Belgium, prov. Antwerp, Mol, 17.vi.2014 © Carina Van Steenwinkel
same leaf, larva in the mine
a few days later, the larva has pupated
Ulmus minor, Susteren, 25.vii.2002
Salix spec., België, prov. Limbourg, de Hoefaert-Lanaken, 27.vi.2015 © Carina Van Steenwinkel: larva, dorsal
fresh pupa (it will turn later to almost black)
Tilia spec., Belgium, prov. Limburg, Zelem, Sint-Jansberg, 4.vii.2017 © Carina Van Steenwinkel
this mine bears a treacherous similarity with the one of Roeslerstammia erxlebella,
but the droplet,
and the spotted larva make the difference
mine
Full depth blotch, invariably beginning at the leaf tip or the tip of a leaf lobe or tooth. Oviposition site covered by a black, shining drop of hardened secretion. Frass generally in long threads, but sometimes in elongated granules. Pupa in the mine, not in a cocoon.
host plants
polyphagous on woody plants
Acer campestre; Betula; Carpinus betulus; Corylus avellana; Crataegus monogyna; Frangula alnus; Malus sylvestris; Prunus; Pyrus communis; Quercus; Salix alba, aurita, caprea, cinerea & cinerea subsp. oleifolia, myrsinifolia; Sorbus aria, aucuparia; Tilia cordata, platyphyllos; Ulmus laevis, minor.
Starý (1930a) also mentions Populus tremula.
phenology
Larvae found between mid May and mid August. According to Robbins (1991a) bivoltine: early summer and late summer.
BENELUX
BE observed (Fauna Europaea, 2007).
NE observed (Vorst, 2009a); uncommon, mainly found in the southern and eastern parts of the country.
LUX observed (Ellis).
distribution within Europe
All of Europe except Ireland (Fauna Europaea, 2007).
larva
pupa
synonyms
Trachys minuta.
notes
Hibernation as imago, in the leaf litter (Bilý, 2002a).
references
Beiger (1979a), Bilý (1982a, 1993a, 1994a, 1999a, 2002a), Brechtel & Kostenbader (200a), Buhr (1933a, 1964a), Cobos (1986a), Csóka (2003a), Drăghia (1972a), Haase (1942a), Hartig (1939a), Hering (1923a, 1930a,e, 1932g, 1957a), Kollár (2007a), Kollár & Hrubík (2009a), Maček (1999a), Michalska (1972a, 1976a), Murria Beltrán & Murria Beltrán (2005a), Niehuis (2004a), Panin, Săvulecu & Ruicănescu (2015a), Robbins (1991a), Sakalian (2003a), Sánchez Sobrino & Tolosa Sánchez (2005a), Schaefer (1949a), Skala (1951a), Škorpík, Křivan & Kraus (2011a), Stammer (2016a), Starý (1930a), Stolnicu (2008a), Théry (1942a), Tomov & Krusteva (2007a), Ugarte San Vicente (2005a), Ugarte san Vicente, Zabalegui & Salgueira Cerezo (2006a), Ureche (2010a), Verdugo (2005a), Vorst (2009a).