Euura testaceipes

Euura testaceipes is a species of sawfly belonging to the family Tenthredinidae (common sawflies). The larvae feed within the leaf-stalk (petiole), or midrib of a leaf, on willows (Salix species) forming a gall. The sawfly was first described by Carl Gustav Alexander Brischke in 1883. E. testaceipes is one of three closely related species known as the Euura amerinae species subgroup. The other members of the group are E. amerinae (Linnaeus, 1758) and E. venusta (Brischke, 1883)[1]

Euura testaceipes
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Suborder: Symphyta
Family: Tenthredinidae
Genus: Euura
Species:
E. testaceipes
Binomial name
Euura testaceipes
(Brischke, 1883)

Description of the gall

The spindle-shaped or ovoid gall is formed in the petiole or midrib of a leaf and is 10 mm long and 5 mm wide and contains one larva. It can be found on white willow (S. alba), Babylon willow (S. babylonica), S. blanda, crack willow (S. fragilis) and almond willow (S. triandra).[2][3] There can be several galls on a leaf.[3]

Distribution

The sawfly has been found in Great Britain, the Netherlands and Poland.[1][2][3]

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gollark: Maybe more decouplers, or dedicated small SRBs on the tanks.
gollark: True, true. This means I probably just need to figure out how to get the tanks further away.
gollark: A failed test of the new Ultra Heavy Launch Vehicle, which exploded horribly after detaching its extra fuel tanks.
gollark: From reading the start of that I expected that someone would just use an excessively big bit of paper, but that's much funnier.

References
  1. Liston, Andrew D; Heibo, Erik; Prous, Marko; Vardal, Hege; Nyman, Tommi; Vikberg, Veli (2017). "North European gall-inducing Euura sawflies (Hymenoptera, Tenthredinidae, Nematinae)". Zootaxa. Magnolia Press. 4302 (1): 54–57. doi:10.11646/zootaxa.4302.1.1. ISSN 1175-5334.
  2. Redfern, Margaret; Shirley, Peter; Boxham, Michael (2011). British Plant Galls (Second ed.). Shrewsbury: Field Study Council. pp. 282–299. ISBN 978-185153-284-1.
  3. Ellis, W N. "Euura testaceipes (Brischke, 1883)". Plant Parasites of Europe. Retrieved 11 March 2018.


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