Euura triandrae

Euura triandrae is a species of sawfly belonging to the family Tenthredinidae (common sawflies). The larvae feed on the leaves of almond willow (Salix triandra) and was first described in 1941.

Euura triandrae
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Suborder: Symphyta
Family: Tenthredinidae
Genus: Euura
Species:
E. triandrae
Binomial name
Euura triandrae
(Benson, 1941)
Synonyms

Pontania triandrae Benson

Description of the gall

The gall is an ovoid, bean-shaped gall, up to 8 mm x 4 mm in size, with a hard thick red wall when occupied. There are often two galls to a leaf, on either side of the midrib, and they are almost equally prominent on the both sides of a leaf. Galls of E. triandrae are found on almond willow (S. triandra). There are usually two broods in a year (i.e. bivoltine.[1]

[2]

Euura triandrae is one of three closely related species in the Euura proxima group. The others members of the group are,

Distribution

This species has been found in Great Britain (England), the Netherlands, Norway and Sweden.[1][2][4]

References
  1. Redfern, Margaret; Shirley, Peter; Boxham, Michael (2011). British Plant Galls (Second ed.). Shrewsbury: Field Study Council. pp. 282–299. ISBN 978 185153 284 1.
  2. Ellis, W N. "Euura triandrae (Benson, 1941)". Plant Parasites of Europe. Retrieved 8 October 2019.
  3. Liston, Andrew D; Heibo, Erik; Prous, Marko; Vardal, Hege; Nyman, Tommi; Vikberg, Veli (2017). "North European gall-inducing Euura sawflies (Hymenoptera, Tenthredinidae, Nematinae)". Zootaxa. 4302 (1): 83–85. ISSN 1175-5334.
  4. "Euura triandrae Benson, 1941". GBIF. Retrieved 12 May 2018.
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