Trachys minutus (Linnaeus, 1758)

Trachys minutus: mine on Corylus avellana

Corylus avellana, Belgium, prov. Namur, Lavaux-Sainte-Anne, Gros Tienne © Carina Van Steenwinkel

Trachys minutus: mine on Salix cinerea

Salix cinerea, Belgium, prov. Antwerp, Mol © Carina Van Steenwinkel

Trachys minutus: larva in mine

same leaf, larva in the mine

Trachys minutus: pupa in mine

a few days later, the larva has pupated


Ulmus minor, Susteren

Trachys minutus larva

Salix spec., België, prov. Limbourg, de Hoefaert-Lanaken © Carina Van Steenwinkel: larva, ventral

Trachys minutus pupa

fresh pupa (it will turn later to almost black)

Trachys minutus: mine on Tilia spec.

Tilia spec., Belgium, prov. Limburg, Zelem, Sint-Jansberg © Carina Van Steenwinkel

Trachys minutus: occupied mine on Tilia spec.

this mine bears a treacherous similarity with the one of Roeslerstammia erxlebella,

Trachys minutus: occupied mine on Tilia spec.

but the droplet,

Trachys minutus: larva in mine on Tilia spec.

and the spotted larva make the difference


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.


polyphagous on woody plants

Acer campestre; Betula; Carpinus betulus; Corylus avellana; Crataegus monogyna; Frangula alnus; Malus sylvestris; Prunus; Pyrus communis; Salix alba, aurita, caprea, cinerea & cinerea subsp. oleifolia, myrsinifolia; Sorbus aria, aucuparia; Tilia cordata, platyphyllos; Ulmus laevis, minor.

Starý (1930a) also mentions Populus tremula.


Larvae found between mid May and mid August. According to Robbins (1991a) bivoltine: early summer and late summer.


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).


Bilý (1982a, 1993a, 1994a), Brechtel & Kostenbader (2002a), Niehuis (2004a).



Hibernation as imago, in the leaf litter (Bilý, 2002a).


Beiger (1979a), Bilý (1982a, 1993a, 1994a, 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), Niehuis (2004a), Robbins (1991a), Sánchez Sobrino & Tolosa Sánchez (2005a), Schaefer (1949a), Skala (1951a), Stammer (2016a), Starý (1930a), Stolnicu (2008a), Théry (1942a), Tomov & Krusteva (2007a), Ugarte san Vicente ao (2006a), Ureche (2010a), Vorst (2009a).


mod 4.viii.2017