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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Heterarthrus wuestneii (Konow, 1905)
[Tenthredinidae]


Phyllotoma aceris Kaltenbach, 1856. [Unavailable]
Heterarthrus aceris (McLachlan, 1867)
Phyllotoma aceris McLachlan, 1867
Heterarthrus wuestneii (Konow, 1905)
Phyllotoma wuestneii Konow, 1905
Heterarthrus wustneii (Konow, 1905). [Unavailable]
Phyllotoma wanduuml;stneii Konow, 1905
Heterarthrus tauricus Ermolenko, 1984
Heterarthrus healyi Altenhofer & Zombori, 1987.


Leaf miner: A large, upper-surface (often nearly full depth) blotch, without a hint of an initial corridor, beginning in the tip of a leaf segment. Often a well-defined the first section of the mine is much shalllower and green in transparancy. Frass in loose grains. Like H. aceris the cocoon, that is formed in the mine, drops out of the leaf along with a circular section of the upper epidermis (Bladmineerders van Europa).

The mine is also illustrated in British leafminers, as H. healyi.

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).

Like all Heterarthrus species the larva has thoracic feet that are reduced to triangular stumps (Bladmineerders van Europa).The larva is also illustrated in (British leafminers, as Heterarthrus healyi).

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

Outside the mine, inside an excised cut out disc (British leafminers, as Heterarthrus healyi).

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

Hosts in Great Britain & Ireland:

Aceraceae        
Acer campestre Field Maple British Wild Flowers by John Somerville et al. British leafminers, as Heterarthrus healyi
Acer campestre Field Maple British Wild Flowers by John Somerville et al. Pitkin & Plant, as Heterarthrus healyi

Hosts elsewhere:

Aceraceae        
Acer campestre Field Maple British Wild Flowers by John Somerville et al. Bladmineerders van Europa

Time of year - larvae: Bivoltine: summer and autumn (British leafminers, as Heterarthrus healyi).

Time of year - adults: Currently unknown.

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

Distribution in Great Britain & Ireland: Uncommon (British leafminers, as Heterarthrus healyi). Britain including North Wiltshire (NBN Atlas)

Distribution elsewhere: Widespread in continental Europe including Austria, Danish mainland, Germany, Switzerland and Ukraine (van Achterberg in Fauna Europaea).

NBN Atlas links to known host species:

Acer campestre

British and Irish Parasitoids in Britain and elsewhere:

Ichneumonoidea  
Shawiana laevis (Thomson, 1892) Braconidae: Exothecinae


External links: Search the internet:
Biodiversity Heritage Library
Bladmineerders van Europa
British leafminers (as Heterarthrus healyi)
Encyclopedia of Life
Fauna Europaea
NBN Atlas
NHM UK Checklist
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Last updated 09-Nov-2017  Brian Pitkin Top of page