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Ectoedemia
subbimaculella (Haworth, 1828) Spotted Black Pigmy
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Oviposition on the upperside of the leaf, next to a vein. The mine begins as a narrow corridor, filled with frass, running along a vein: usually the midrib, or along a lateral vein and then running in the direction of the midrib. The corridor abruptly widens into a blotch, usually in the axil of the midrib and a side vein. The larva makes a slit in the lower epidermis of the blotch, by which part of the frass is ejected. Pupation external (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). Larva white, head and pronotal plate blackish-brown (British leafminers). The larva is also illustrated in Bladmineerders van Europa. Pupa: The pupae of moths have visible head appendages, wings and legs which lie in sheaths (see examples). Adult: The adult is illustrated in UKMoths. The species is included in mothdissection.co.uk. Hosts in Great Britain and Ireland:
Hosts elsewhere:
Time of year - larvae: October - November (British leafminers). Time of year - adults: Currently unknown. Distribution in Great Britain and Ireland: Commonest in south-east England, the distribution expands north and westwards, though the exact distribution is unclear because of earlier confusion with similar species (UKMoths) including Bedfordshire, Breconshire, Buckinghamshire, Cambridgeshire, Denbighshire, Dorset, Dumfriesshire, Durham, East Cornwall, East Kent, East Norfolk, East Suffolk, Glamorgan, Hertfordshire, Huntingdonshire, Isle of Wight, Kirkudbrightshire, Leicestershire, Middlesex, North Hampshire, North Northumberland, North Somerset, Northamptonshire, Shropshire, South Hampshire, South Northumberland, South Somerset, South Wiltshire, South-west Yorkshire, Stafford, Surrey, West Cornwall, West Gloucestershire, West Kent, West Norfolk, West Suffolk and Worcestershire (NBN Atlas). See also British leafminers distribution map. Also recorded in the Republic of Ireland (Fauna Europaea and National Biodiversity Data Centre Map). Distribution elsewhere: Widespread in continental Europe including Austria, Belgium, Bosnia and Herzegovina, Croatia, Czech Republic, Danish mainland, Estonia, Finland, French mainland, Germany, Greek mainland, Hungary, Italian mainland, Latvia, Luxembourg, ? Macedonia, Republic of Moldova, Norwegian mainland, Poland, Portuguese mainland, Romania, Russia - Central, Sicily, Slovakia, Slovenia, Spanish mainland, Sweden, Switzerland, The Netherlands, Ukraine and Yugoslavia (Fauna Europaea). NBN Atlas links to known host species:
British and Irish Parasitoids in Britain and elsewhere:
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| Last updated 23-May-2019 Brian Pitkin |  |
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