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


Scolioneura betuleti (Klug, 1816)
[Hymenoptera: Tenthredinidae]

Tenthredo betuleti Klug, 1816 [not 1814]
Blennocampa betuleti (Klug, 1816)
Messa betuleti (Klug, 1816) [not 1814]
Messa (Scolioneura) betuleti (Klug, 1816) [not 1814]
Scolioneura betuleti (Klug, 1816) [not 1814]
Selandria betuleti (Klug, 1816)
Tenthredo (Allantus) betuleti Klug, 1816 [not 1814]
Tenthredo (Blennocampa) betuleti Klug, 1816
Selandria tenuicornis (Klug, 1816). [Unavailable]
Emphytus (Fenusa) nigricans (Klug, 1818). [Unavailable]
Fenusa nigricans (Klug, 1818). [Unavailable]
Fenusella nigricans (Klug, 1818). [Unavailable]
Messa nigricans (Klug, 1818). [Unavailable]
Phaenusa nigricans Klug, 1818. [Unavailable]
Phoenusa nigricans Klug, 1818. [Unavailable]
Scolioneura nigricans (Klug, 1818). [Unavailable]
Tenthredo nigricans Klug, 1818. [Unavailable]
Tenthredo (Emphytus) nigricans Klug, 1818. [Unavailable]
Fenusa betulae Zaddach, 1859 [not 1874]
Phaenusa betulae (Zaddach, 1859)
Phoenusa betulae (Zaddach, 1859)
Scolioneura betulae (Zaddach, 1859).

Leaf miner: Large, transparent, in fresh condition pale green blotch that begins at the leaf margin, without an accumulation of frass. Mine and larva are undistinguishable from those of S. vicina, but vicina larvae live from mid May till mid June, while the larvae of betuleti are found only in August - October (Bladmineerders van Europa).

The mine is also illustrated in (British leafminers.

Larva: The larvae of sawflies have a head capsule, chewing mouthparts with opposable mandibles, six thoracic legs and abdominal legs (although they may be reduced) (see examples).

The larva has three smaller ventral spots and dark legs (British leafminers). Illustrated in Bladmineerders van Europa.

Pupa: The pupae of sawflies have visible head appendages, wings and legs which lie in sheaths.

Adult: The adult is illustrated in ECatSym - Electronic World Catalog of Symphyta.

Hosts in Great Britain and Ireland:

Alnus viridis Green Alder   Derek Mayes (pers. comm.)
Betula       British leafminers
Betula       Pitkin & Plant

Hosts elsewhere:

Alnus viridis Green Alder   Bladmineerders van Europa
Betula ermani     Bladmineerders van Europa
Betula humilis     Bladmineerders van Europa
Betula lutea     Bladmineerders van Europa
Betula obscura     Bladmineerders van Europa
Betula pendula Silver Birch British Wild Flowers by John Somerville et al. Bladmineerders van Europa
Betula pubescens Downy Birch British Wild Flowers by John Somerville et al. Bladmineerders van Europa

Time of year - larvae: Early Summer and Autumn (British leafminers).

Time of year - adults: Currently unknown.

Comments: Full synonymy and references are listed in ECatSym - Electronic World Catalog of Symphyta.

Distribution in Great Britain and Ireland: Widespread in Britain including Bedfordshire, Berkshire, Buckinghamshire, Cumberland, Derbyshire, Glamorgan, Leicestershire, Middlesex, South Lancashire, South Northumberland, South Wiltshire, South-east Yorkshire, Surrey and West Suffolk (NBN Atlas). Mines and larvae on Alnus viridis have recently been recorded from Orkney by Derek Mayes (pers. comm.), which given the time of year are most likely Scolioneura betuleti.

Distribution elsewhere: Widespread in continental Europe including Austria, Belgium, Bulgaria, Croatia, ? Czech Republic, Danish mainland, ? Estonia, Finland, French mainland, Germany, Hungary, Italian mainland, Latvia, Luxembourg, Poland, Russia - Central, Slovakia, Spanish mainland, Sweden, The Netherlands and Ukraine (Fauna Europaea).

NBN Atlas links to known host species:

Alnus viridis, Betula pendula, Betula pubescens

British and Irish Parasitoids in Britain and elsewhere:

Closterocerus trifasciatus Westwood, 1833 Eulophidae: Entedoninae
Ichneumonoidea - Links to species no longer available  
Shawiana catenator (Haliday, 1836) Braconidae: Exothecinae
Shawiana laevis (Thomson, 1892) Braconidae: Exothecinae
Lathrolestes macropygus (Holmgren, 1857) Ichneumonidae: Euryproctinae
Lathrolestes verticalis (Brischke, 1871) Ichneumonidae: Euryproctinae
Scambus inanis (Schrank, 1802) Ichneumonidae: Pimplinae

External links: Search the internet:
Biodiversity Heritage Library
Bladmineerders van Europa
British leafminers
Encyclopedia of Life
Fauna Europaea
NBN Atlas
NHM UK Checklist
Find using Google
Find using Google Scholar
Find images using Google

XHTML Validator
Last updated 19-Oct-2019  Brian Pitkin Top of page