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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Fenusa dohrnii (Tischbein, 1846)
[Tenthredinidae]


Fenusa varipes (Lepeletier, 1823). [Unavailable]
Caliosysphinga dohrni Tischbein, 1846 [Unavailable]
Fenusa dohrni (Tischbein, 1846) [Unavailable]
Kaliosysphinga dohrni Tischbein, 1846 [Unavailable]
Fenusa (Fenusa) dohrnii (Tischbein, 1846)
Fenusella dohrnii (Tischbein, 1846)
Kaliofenusa dohrnii (Tischbein, 1846)
Kaliosysphinga dohrnii Tischbein, 1846
Fenusa curta Norton, 1861
Fenusa curtis Norton, 1861 [Unavailable]
Fenusa curtus Norton, 1862
Fenusa nigricans C. G. Thomson, 1870 [Unavailable]
Kaliosysphinga nigricans (C. G. Thomson, 1870) [Unavailable]
Fenusa melanopoda (Cameron, 1876)
Kaliosysphinga melanopoda (Cameron, 1876)
Phaenusa melanopoda Cameron, 1876
Phoenusa melanopoda (Cameron, 1876)
Fenella westwoodi Cameron, 1882
Fenella westwoodii Cameron, 1882 [Unavailable]
Fenusa pumila Brischke, 1883 [Unavailable].


Leaf miner: A large brownish blotch, without an initial corridor. Usually the mine starts near a vein axil, and expands towards the leaf margin. The mine mostly remains enclosed by two thick lateral veins; only near the leaf margin (and especially in thin shadow leaves) the mine may trespass over the side veins. Often several mines in a leaf. The mine is upper surface, but quite deep, specially when the larva is young not all tissue is eaten away, and the mine keeps a greenish tinge there. Contrary to Heterarthrus vagans, at least as common on the same host, the larva vacates the mine prior to pupation (Bladmineerders van Europa).

A large, brown upper surface blotch, initially between veins and running towards the margin (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 is illustrated in British leafminers and Bladmineerders van Europa. The larva vacates the mine prior to pupation (Bladmineerders van Europa).

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

Adult: Details unknown.

Hosts in Great Britain & Ireland:

Betulaceae        
Alnus       British leafminers
Alnus glutinosa Alder British Wild Flowers by John Somerville et al. British leafminers
Alnus glutinosa Alder British Wild Flowers by John Somerville et al. Pitkin & Plant
Alnus incana     Pitkin & Plant

Hosts elsewhere:

Betulaceae        
Alnus cordata Italian Alder British Wild Flowers by John Somerville et al. Bladmineerders van Europa
Alnus glutinosa Alder British Wild Flowers by John Somerville et al. Bladmineerders van Europa
Alnus incana Grey Alder British Wild Flowers by John Somerville et al. Bladmineerders van Europa
Alnus rugosa     Bladmineerders van Europa
Alnus viridis Green Alder   Bladmineerders van Europa
Alnus viridis subsp suaveolens     Bladmineerders van Europa

Time of year - larvae: Bivoltine - early summer onwards. Trivoltine in a good year (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 & Ireland: Very common (British leafminers) including Bedfordshire (VC30), Cambridgeshire (VC29), Cheshire (VC58), Cumberland (VC70), Derbyshire (VC57), Glamorganshire (VC41), Mid-west Yorkshire (VC64), Monmouthshire (VC35), North Wiltshire (VC7), North-west Yorkshire (VC65), South Essex (VC18), South Lancashire (VC59), South Wiltshire (VC8), Surrey (VC17), West Gloucestershire (VC34), West Suffolk (VC26) and Worcestershire (VC37) (NBN Gateway).

Also recorded in the Republic of Ireland (van Achterberg in Fauna Europaea).

NBN Grid Map:

NBN Grid Map

Fenusa dohrnii
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 Austria, Belgium, Bulgaria, Corsica, Croatia, Czech Republic, Danish mainland, Estonia, Finland, French mainland, Germany, Hungary, Italian mainland, Luxembourg, Poland, Romania, Russia - Central, Slovakia, Spanish mainland, Sweden, Switzerland, The Netherlands and Ukraine. Also recorded in the Nearctic region (van Achterberg in Fauna Europaea).

NBN Interactive Grid Maps of known host species:

Alnus cordata, Alnus glutinosa, Alnus incana, Alnus viridis

British and Irish Parasitoids in Britain and elsewhere:

Chalcidoidea  
Chrysocharis purpurea Bukowski, 1938 Eulophidae: Entedoninae
Ichneumonoidea  
Shawiana catenator (Haliday, 1836) Braconidae: Exothecinae
Shawiana laevis (Thomson, 1892) Braconidae: Exothecinae
Xenarcha abnormis (Wesmael, 1838) Braconidae: Exothecinae
Lathrolestes pictilis (Holmgren, 1857) Ichneumonidae: Euryproctinae


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


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Last updated 15-Sep-2016  Brian Pitkin Top of page