Leaf-mine: Oviposition by way of an ovipositor, no egg visible therefore. The larva makes an irregular blotch. The part of the mine nearest to the oviposition site is more thranslucent than the later, in transparancy more greenish, part of the mine. The mine usually lies close to the leaf tip, often several together. After its first moult the larva makes a roundish excision, 3-4 mm in diameter. Sandwiched herein it drops to the ground and continues feeding of dead leaves. The excision occupies about half of the surface of the blotch (Bladmineerders van Europa).

The mine is also described in UKMoths.

Larva: Incurvaria-larvae, while resting, take a horse-shoe like posture, unlike the larvae of Antispila species (Bladmineerders van Europa).

Pupa: Details unknown.

Adult: The adult is illustrated in UKMoths by Andy Mackay. The male and female genitalia are illustrated by the Lepidoptera Dissection Group. The ovipositor comb of oehlmanniella is illustrated in British leafminers alongside pectinea and masculella.

Hosts in Britain:

Hosts elsewhere:

Time of year - larvae: Mining larvae are found in July - August (Bladmineerders van Europa).

Time of year - adults: The adults fly in June and July (UKMoths).

Distribution in Great Britain and Ireland: Widespread in much of the Britain including Anglesey, Banff, Brecon, Buckinghamshire, Caernarvonshire, Cambridgeshire, Cardiganshire, Cheshire, Denbighshire, Derbyshire, East Cornwall, East Kent, East Suffolk, East Sussex, Easterness, Elgin, Flintshire, Glamorgan, Herefordshire, Middlesex, North Aberdeen, North Ebudes, North Essex, North Hampshire, North Somerset, North Wiltshire, North-east Yorkshire, Pembrokeshire, Shropshire, South Aberdeen, South Lancaster, South Wiltshire, South-west Yorkshire, Stafford, Surrey, West Gloucestershire, West Kent, West Lancaster, West Norfolk, West Suffolk, Westmorland and Worcestershire (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) and the Republic of Ireland (Karsholt and van Nieukerken in Fauna Europaea).

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: Widespread in continental Europe including Albania, Austria, Belgium, Bulgaria, Croatia, Czech Republic, Danish mainland, Estonia, Finland, French mainland, Germany, Greek mainland, Hungary, Italian mainland, Kaliningrad Region, Latvia, ? Luxembourg, Norwegian mainland, Poland, Romania, Russia - Central, East, North, Northwest, Slovakia, Spanish mainland, Sweden, Switzerland and The Netherlands (Karsholt and van Nieukerken in Fauna Europaea).

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

Parasitoids in Britain and elsewhere: Unknown.