Euura collactanea

Euura collactanea
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Insecta
Order:	Hymenoptera
Suborder:	Symphyta
Family:	Tenthredinidae
Genus:	Euura
Species:	E. collactanea
Binomial name
	Euura collactanea; (Förster, 1854)
Synonyms
	List Nematus collactaneus Förster, 1854 ; Pontania collactanea Konow (1901) ; Pontania (Pontania) collactanea Viitasaari & Vikberg (1985) ; Nematus (Pontania) collactanea Zhelochovtsev (1988) ; Eupontania collactanea Vikberg & Zinovjev (2006); Euura (Eupontania) collactanea Noblecourt (2016); Nematus deficiens Förster, 1854; Nematus crassipes var. vacciniellus Cameron 1876; Nematus xanthostylos Zaddach 1884; Pontania viminalis var. lugubris Enslin 1918; Pontania collactanea relicta Weiffenbach, 1962; Eupontania collactanea rosmarinifoliae Vikberg & Zinovjev, 2006; Nematus helicinus Thomson (1871); ;

Euura collactanea is a species of sawfly belonging to the family Tenthredinidae (common sawflies). The larva feed within galls on the leaves of willows (Salix species). It was first described by Arnold Förster in 1854.

Description of the gall

The gall is found on the underside of a leaf of the host plant. It is globular and up to 5 mm in diameter. Descriptions vary according to the source. According to the Plant Parasites of Europe website, the gall can be hairy and sometimes warty. The colour varies from bright red to a red-tinged green. Redfern et al (2011) describe the gall as having brown warts and either no hairs or slightly hairy. The galls can be found on the leaves of creeping willow (Salix repens) and rosemary-leaved willow (Salix rosmarinifolia).[1][2]

Distribution

The gall is found, in the west from Great Britain and Ireland (locally common), north to Sweden and east to Lake Ladoga, Russia.[3][2]

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References

Ellis, W N. "Euura collactanea (Förster, 1854)". Plant Parasites of Europe. Retrieved 19 March 2019.
Redfern, Margaret; Shirley, Peter; Bloxham, Michael (2011). British Plant Galls (Second ed.). Shrewsbury: FSC Publications. pp. 282–299. ISBN 978-1-85153-284-1.

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[wne-1] Ellis, W N. "Euura collactanea (Förster, 1854)". Plant Parasites of Europe. Retrieved 19 March 2019.

[pg-2] Redfern, Margaret; Shirley, Peter; Bloxham, Michael (2011). British Plant Galls (Second ed.). Shrewsbury: FSC Publications. pp. 282–299. ISBN 978-1-85153-284-1.