Leaf-mine: The mine begins with a very narrow full depth corridor, that ends upon the midrib. Subsequently a broad corridor, or rather an elongated blotch, is made overlying the midrib; from here broad, lobe-like extensions are made into the blade. Frass in discrete grains. Secondary feeding lines conspicuous. The larva is capable of leaving the mine and restarting in a new leaf, in which case the association with the midrib may be lost. Pupation after vacation of the mine (Bladmineerders van Europa).

Larva: Details unknown.

Puparium: Yellow; anterior spiracle openings arranged in large arcs, not elevated on a fan-like structure; posterior spiracles each with a central opening larger and more raised than the lateral openings (White, 1988: 63).

Comments: Leontodon autumnalis is treated as Scorzoneroides autumnalis (Autumn Hawkbit) by Stace (2010).

Hosts in Britain:

Hosts elsewhere:

Time of year - mines: September-October.

Time of year - adults: May-June, the following year.

Distribution in Great Britain and Ireland: North-east Scotland (White, 1988: 63), Perth (Craighall Gorge, Blairgowrie; Romadie Wood, Bridge of Cally, Den of Riechip, Butterstone) (Bland and Rotheray, 1994), Warwickshire (Alvecote) (Robbins, 1991); Caernarvonshire, East Sussex, Mid Perth and North-east Yorkshire (NBN Gateway - N.B. includes Watsonian Vice Counties having publicly available records that fall within or overlap the vice county border at 10km resolution or better i.e. a record for a vice county may relate to an adjacent vice county - for included datasets see NBN Grid map below).

Also throughout Ireland (White, 1988: 63).

NBN Grid map: Note that not all datasets on the NBN Gateway may be available on the map below. If you are an NBN Gateway registered user you can request access for missing datasets via the link 'Open interactive map in new window' below.

Distribution elsewhere: Europe, except Mediterranean area (White, 1988: 63), including The Netherlands (Bladmineerders van Europa) and Belgium (Leclercq and de Bruyn, 1991). See also Fauna Europaea.

NBN interactive distribution map(s) of known host species in Great Britain and Ireland and elsewhere:

Parasitoids in Britain and elsewhere: Unknown.