The leaf and stem mines of British flies and other insects

(Coleoptera, Diptera, Hymenoptera and Lepidoptera)

by Brian Pitkin, Willem Ellis, Colin Plant and Rob Edmunds


Bactra robustana (Christoph, 1872)
[Lepidoptera: Tortricidae]

Saltern Marble

Aphelia robustana Christoph, 1872. Hor. Soc. ent. Ross. 9: 13.
Bactra robustana
(Christoph, 1872); Rebel, 1901. Cat. Lep. Pal. 2: 113.

Stem-borer: The larvae feed internally in the stems of sea club-rush (UKMoths).

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).

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 by Jon Baker. The species is included in

Hosts in Great Britain and Ireland:

Bolboschoenus maritimus Sea Club-rush British Wild Flowers by John Somerville et al. UKMoths
Bolboschoenus (as Scirpus) maritimus Sea Club-rush British Wild Flowers by John Somerville et al. Pitkin & Plant

Hosts elsewhere: Currently unknown.

Time of year - larvae: Currently unknown.

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

Distribution in Great Britain and Ireland: Saltmarshes around the coasts of southern and western England and Wales, including Camarthen, where it can be locally common (UKMoths); Cambridgeshire, Carmarthenshire, Denbighshire, Dorset, East Kent, East Suffolk, Glamorgan, Isle of Wight, Kirkudbrightshire, Merionethshire, North Devon, North Somerset, South Devon, South Essex, South Hampshire, South-east Yorkshire, Surrey, West Cornwall, West Gloucestershire, West Kent, West Norfolk and Westmorland (NBN Atlas).

Also recorded in the Republic of Ireland (Fauna Europaea and National Biodiversity Data Centre Map).

Distribution elsewhere: Widespread in continental Europe including Albania, Austria, Belgium, Bulgaria, Danish mainland, Estonia, Finland, French mainland, Germany, Hungary, Italian mainland, Latvia, Malta, Norwegian mainland, Romania, Sardinia, Sicily, Slovakia, Spanish mainland, Sweden and The Netherlands (Fauna Europaea).

NBN Atlas links to known host species:

Bolboschoenus maritimus

British and Irish Parasitoids in Britain and elsewhere: Currently unknown.

External links: Search the internet:

Belgian Lepidoptera
Biodiversity Heritage Library
Bladmineerders van Europa
British leafminers
Encyclopedia of Life
Fauna Europaea
NBN Atlas
NHM UK Checklist

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Last updated 25-Jun-2019  Brian Pitkin Top of page