Before overwintering larvae make a small, full depth blotch (Robbins, 1991a). After hibernation, they live freely under a silk.
Larvae mine in late autumn (Agassiz, 1996a). Not rare, in Belgium (De Prins, 1998a) (Bladmineerders van Europa).
Larva: The larvae of moths have a head capsule and chewing mouthparts with opposable mandibles (see video of a gracillarid larva feeding), six thoracic legs and abdominal legs (see examples).
The larva overwinters when small (UKMoths).
Pupa: The pupae of moths have visible head appendages, wings and legs which lie in sheaths (see examples).
The pupa is illustrated in UKMoths.
The adult is illustrated in UKMoths. The male and female genitalia are illustrated by the
Lepidoptera Dissection Group.
Hosts in Great Britain & Ireland:
of year - larvae:
Late autumn (Bladmineerders van Europa).
of year - adults: Flies at night during July and frequently
taken at light (UKMoths).
in Great Britain & Ireland: Fairly common throughout Britain
except the far north (UKMoths)
including Bedfordshire (VC30), Breconshire (VC42), Caernarvonshire (VC49), Cambridgeshire (VC29),
Cheshire (VC58), Cumberland (VC70), Denbighshire (VC50), Derbyshire (VC57), East Cornwall (VC2), East Gloucestershire (VC33), East Kent (VC15), East Norfolk (VC27), East Suffolk (VC25), Glamorganshire (VC41),
Herefordshire (VC36), Hertfordshire (VC20), Huntingdonshire (VC31), Kincardineshire (VC91), Merionethshire (VC48),
Middlesex (VC21), Monmouthshire (VC35), Montgomeryshire (VC47), North Essex (VC19), North Hampshire (VC12),
North Somerset (VC6), North Wiltshire (VC7), Pembrokeshire (VC45), Shropshire (VC40), South Aberdeenshire (VC92), South Somerset (VC5), South Wiltshire (VC8), South-west Yorkshire (VC63),
Staffordshire (VC39), Surrey (VC17), Warwickshire (VC38), West Gloucestershire (VC34), West Kent (VC16),
West Lancashire (VC60), West Norfolk (VC28), West Suffolk (VC26), Westmorland (VC69) and Worcestershire (VC37) (NBN
lutarea), the Channel Is. (Karsholt and van Nieukerken in Fauna Europaea).
recorded in the Republic of Ireland and Northern
Ireland (Karsholt and van Nieukerken in Fauna Europaea).
NBN Grid Map: as Paraswammerdamia lutarea
Paraswammerdamia nebulellae (as
NBN Grid Map : NBN Terms and Conditions
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elsewhere: Widespread in continental Europe including Albania,
Austria, Belgium, Bulgaria, Czech Republic, Danish mainland, Estonia,
Finland, French mainland, Greek mainland, Hungary, Italian mainland,
Kaliningrad Region, Latvia, Luxembourg, Norwegian mainland, Poland,
Portuguese mainland, Romania, Sardinia, Slovakia, Spanish mainland,
Sweden, Switzerland, The Netherlands and Ukraine (Karsholt and
van Nieukerken in Fauna Europaea).
NBN Interactive Grid Maps of known host species:
British and Irish Parasitoids in Britain and elsewhere: Currently unknown.