Euura crassipes

Euura crassipes is a species of sawfly belonging to the family Tenthredinidae (common sawflies) and was first described by Carl Gustaf Thomson in 1871. The larvae feed internally in a gall formed on the leaves of downy willow (Salix lapponum).

Euura crassipes
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Suborder: Symphyta
Family: Tenthredinidae
Genus: Euura
Species:
E. crassipes
Binomial name
Euura crassipes

Description of the gall

Descriptions of the gall differs depending on the source. According to Redfern et al. (2011) the thin-walled gall is globular, 4–10 mm diameter and usually protruding more on the underside of the leaf of downy willow. According to the website Plant Parasites of Europe, the thin-walled gall protrudes equally on either side of the leaf. The gall feels like felt, is hairy and large in relation to the size of the leaf.[1][2]

Distribution

This species has only been recorded from Finland, Russia (Kola Peninsula), Scotland and Sweden.[3]

gollark: How can I bear coincidental similarities to myself?
gollark: You, me, heavpoot?
gollark: 3?
gollark: You had better unmute us eventually, this is ridiculous discrimination.
gollark: What's terrifying?

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 crassipes (Thomson, 1871)". Plant Parasites of Europe. Retrieved 19 December 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. Magnolia Press. 4302 (1): 88−89. doi:10.11646/zootaxa.4302.1.1. ISSN 1175-5334.
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