Stigmella floslactella (Haworth, 1828)
coarse hazel pigmy
on ? Carpinus, Corylus

Corylus avellana, Diemen

same mine, detail
Corylus avellana, Zeewolde, Harderbos © Hans Jonkman

Carpinus betulus, Cadzand: aberrant mine (see below!)
mine
Oviposition at the underside of the leaf, in a vein axil. Mine a slender, gradually widening corridor; the last section is clearly wider than the larva. In the first section the vaguely delimited frass line almost fills the corridor. Later the frass lies in irregular arcs and clouds, filling about one third of the width of the corridor. The trajectory of the mine is not angular, independent of the leaf venation. Pupation external, exit slit in the upper epidermis.
host plants
Betulaceae, oligophagous
? Carpinus betulus; Corylus avellana, maxima.
Only rarely on Carpinus (Johansson ea, 1990a); van Nieukerken (2021a) even questions whether all floslactella’s on Carpinus might actually concern misidentifications of St. carpinella. Found xenophagously onBetula (Emmet, 1974a).
phenology
Larvae (in the UK) in June – July, and September – October (Emmet, 1983a).
BENELUX
BE recorded (Phegea, 2009).
NE recorded (Kuchlein & de Vos, 1999a; Microlepidoptera.nl, 2009).
LUX recorded (Ellis: Kautenbach).
distribution within Europe
All Europe, except the Balkan Peninsula and the Mediterranean Islands (Fauna Europaea, 2009).
larva
Pale greenish to pale yellowish; see zie Gustafsson & van Nieukerken (1990a) for a description. Contrary to St. microtheriella, the metanotum has a broad zone of fine spinules.
synonyms
Nepticula floslactella; Nepticula saxatilella Grönlien, 1932 (cf Nieukerken & Johansson, 1987a).
references
Ahr (1966a), Anisimovas, Diškus & Stonis (2006a), Beiger (1979a), Bengtsson (2008a), Borkowski (1969a), Buhr (1935a, 1964a), Buszko & Baraniak (1989a), Buszko & Beshkov (2004a), Diškus & Stonis (2012a), Emmet (1974a, 1983a), Gustafsson (1985a), Gustafsson & van Nieukerken (1990a), Haase (1942a), Hartig (1939a), Hering (1934b, 1957a), Huber (1969a), Johansson ao (1990a), Kasy (1983a, 1987a), Klimesch (1936a, 1950c), Klimesch & Skala (1936c), Kuchlein & Donner (1993a), Kuchlein & de Vos (1999a), Kurz (2016a), Kurz & Kurz (2007a), A & Z Laštuvka (1997a, 2014a), Maček (1999a), Matošević, Pernek, Dubravac & Barić (2009a), Michalska (1972a, 1976a), Michna (1975a), Navickaitė, Diškus & Stonis (2014), van Nieukerken (1986a, 2006a, 2021a), van Nieukerken & Johansson (1987a), van Nieukerken, A & Z Laštuvka (2004a, 2006a), van Nieukerken, Zolotuhin & Mistchenko (2004a), Nowakowski (1954a), Popescu-Gorj & Drăghia (1966a), De Prins (1998a, 2007a), Robbins (1991a), Schütze (1931a), Sefrová (2005a), Skala (1939a, 1941a, 1951a), Sønderup (1949a) Stammer (2016a), Steuer (1995a), Stonis, Navickaitė, Rocienė ao (2013a), Surányi (1942a), Szőcs (1977a, 1978a, 1981a), Ureche (2010a), Zaberga, Legzdina, Otfinowski & Obelevičius (2014a).