Thiodia torridana (Lederer, 1859)

mine

Full depth, transparent, very irregular, quite broad corridor or elongate blotch, usually descending from the leaf tip. Much granular frass, concentrated in the first section of the mine and along the sides. After hibernation the larva vacates its mine, spins some leaves together and causes window feeding.

host plants

Asteraceae, oligophagous

Aster amellus; Galatella sedifolia.

Records of other host plant (Aster novi-belgii; Hieracium; Silene; Solidago canadensis; Succisa) are probably incorrect (Hering, 1960a; see also the extensive discussion by Erwin Rennwald on Lepiforum).

phenology

Larvae from September till May; the larva hibernates in the mine.

BENELUX

Not known from the Benelux countries (Fauna Europaea, 2009).

distribution within Europe

From Germany to Italy, and from France to the Ukraine (Fauna Europaea, 2009); also the former CSSR (Hering, 1960a).

larva

The description of the larva by Swatschek is based on material collected on Scabiosa, therefore probably applies to a different species.

synonyms

Foveifera, Rhyacionia, Thiodia, hastana (Hübner, 1799).

references

Disqué (1905a), Hering (1960a), Kasy (1987a), Lepiforum (2019), Nel (2002a), Swatschek (1958a).