Dasineura fraxini

Dasineura fraxini is a gall midge which forms galls on the leaves of ash (Fraxinus species). It was first described by Johann Jacob Bremi-Wolf in 1847.

Dasineura fraxini
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Diptera
Family: Cecidomyiidae
Genus: Dasineura
Species:
D. fraxini
Binomial name
Dasineura fraxini
Bremi, 1847
Synonyms

Cecidomyia fraxini Bremi, 1847
Perrisia fraxini Kieffer, 1897

Appearance of the gall

Most of the gall is on the underside of the main vein, where it forms a narrow green pouch. There can be several on a leaf, ranging in size from 5 mm to 30 mm, although they can coalesce. Each contains an orange larva. There is a slit-like opening on the upperside of the leaf. The galls can be found from June to October and can also be found on the petiole and rachis.[1][2] It is found on Fraxinus angustifolia & subsp., F. excelsior, F. ornus and F. oxycarpa.[3]

Inquiline[4]

The larvae of Clinodiplosis botularia are reddish-yellow and outcompete the gall maker, which perish.

Distribution

The insect is found in Europe.[5]

References
  1. Redfern, Margaret; Shirley, Peter; Bloxham, Michael (2011). British Plant Galls (Second ed.). Shrewsbury: FSC Publications. pp. 118 & 427. ISBN 978 1 85153 284 1.
  2. Chinery, Michael (2011). Britain's Plant Galls. Old Basing, Hampshire: WildGuides Ltd. p. 33. ISBN 978 190365743 0.
  3. Ellis, W N. "Dasineura fraxini (Bremi, 1847) on Fraxinus". Plant Parasites of Europe. Retrieved 18 June 2019.
  4. Ellis, W N. "Clinodiplosis botularia (Winnertz, 1853) on Fraxinus". Plant Parasites of Europe. Retrieved 18 June 2019.
  5. "Dasineura fra,xini (Bremi, 1847)". Fauna Europaea. Retrieved 18 June 2019.



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