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

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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 male and female genitalia are illustrated by the Lepidoptera Dissection Group.

Hosts in Great Britain & 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 & Ireland: Saltmarshes around the coasts of southern and western England and Wales, including Camarthen, where it can be locally common (UKMoths); Carmarthenshire (VC44), East Cornwall (VC2), East Kent (VC15), East Suffolk (VC25), Glamorganshire (VC41), North Devon (VC4), North Essex (VC19), South Devon (VC3), South Essex (VC18), South Hampshire (VC11), Surrey (VC17), West Cornwall (VC1), West Gloucestershire (VC34) and West Norfolk (VC28), (NBN Gateway).

Also recorded in the Republic of Ireland (Karsholt and van Nieukerken in Fauna Europaea). See also Ireland's NBDC interactive map.

NBN Grid Map:

NBN Grid Map

Bactra robustana
NBN Grid Map : NBN Terms and Conditions

Maps are only displayed if the NBN server is active. N.B. Only publicly available records, if any, are shown by default

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 (Karsholt and van Nieukerken in Fauna Europaea).

NBN Interactive Grid Maps of 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 Gateway
NHM UK Checklist

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Last updated 19-Jul-2016  Brian Pitkin Top of page