Dasineura fraxini

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Dasineura fraxini
Galls on Fraxinus excelsior
Scientific classification Edit this classification
Domain: Eukaryota
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

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

Appearance of the gall[edit]

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

The larvae of Clinodiplosis botularia are reddish-yellow, grow faster and outcompete the gall maker, which perish.[4]

Distribution[edit]

The insect is found in Europe.[5]

References[edit]

  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 17 September 2023.
  4. ^ Ellis, W N. "Clinodiplosis botularia (Winnertz, 1853) on Fraxinus". Plant Parasites of Europe. Retrieved 17 September 2023.
  5. ^ "Dasineura fraxini (Bremi, 1847)". Fauna Europaea. Retrieved 17 September 2023.
Galls in the petioles of Fraxinus excelsior