Fomoria septembrella (Stainton, 1849)
hypericum pigmy

Hypericum perforatum, Meinweg

Hypericum perforatum, Losser; the purse-shaped cocoon, in the mine

Hypericum androsaemum, Bergen NH: on this hostplant the mine appears differently
mine
Egg at the leaf underside. The mine begins as a long, winding corridor with a broad frass line that is red brown at first, black brown later. The corridor abruptly widens into a slightly inflated blotch. Here the frass lies concentrated in the centre. Here also a cocoon is made, where pupation takes place. In preparation the larva has cut a semicircular exit slit in the leaf underside, near what later will be the front end of the cocoon.
host plants
Hypericaceae, monophagous
Hypericum androsaemum, bupleuroides, caprifolium, cerastoides, hircinum, hirsutum, hookerianum, maculatum, montanum, nummularium, patulum, perforatum, tetrapterum, thymifolium, undulatum, xylosteifolium.
phenology
Larvae in May – June, July – August, and from september till deep in December (van Frankenhuyzen & Litjens, 1976a). In southern UK possibly trivoltine (Edmunds, 2015b).
BENELUX
BE recorded (Phegea, 2009).
NE recorded (Kuchlein & de Vos, 1999a; Microlepidoptera.nl, 2009).
LUX recorded (Ellis, Kautenbach).
distribution within Europe
All of Europe.
larva
synonyms
Ectoedemia, Nepticula, Stigmella septembrella.
references
Amsel & Hering (1931a), Anisimovas, Diškus & Stonis (2006a), Baldizzone (2004a), Beiger (1955a, 1960a, 1970a, 1979a), Bengtsson (2008a), Borkowski (1969a), Buhr (1935b, 1964a), Buszko & Baraniak (1989a), Corley (2005a), Corley, Rosete, Gonçalves ao (2016a), Diškus & Stonis (2012a), Edmunds (2015b), Emmet (1971a, 1983a), van Frankenhuyzen & Houtman (1972a), van Frankenhuyzen Houtman & Kabos (1982a), van Frankenhuyzen & Litjens (1976a), Gustafsson (1985a), Gustafsson & van Nieukerken (1990a), Haase (1942a), Hering (1957a), Huber (1969a), Johansson ao (1990a), Kasy (1983a), Kuchlein & Donner (1993a), Kuchlein & de Vos (1999a), Kurz (2016a), Kvičala (1938a), A & Z Laštuvka (1997a, 2000b, 2008a, 2014a), Lhomme (1934c), Maček (1999a), Michalska (1970a, 1972a, 1976a), Michna (1975a), Navickaitė, Diškus & Stonis (2011a, 2014a), van Nieukerken (1986a, 2006a), van Nieukerken, A & Z Laštuvka (2006a), De Prins (2007a), Robbins (1991a), Skala (1939a, 1951a), Sønderup (1949a), Starý (1930a), Szőcs (1977a, 1978a, 1981a), Yefremova & Kravchenko (2015a), Zoerner (1969a).