Euura destricta (MacGillivray, 1923)
on Salix
Salix pentandra, UK, Orkney @ Derek Mayes
many galls!
feeding traces
larva, dorsal
younger larva, lateral, to show the mottled feet
gall
leaf margin, generally at one side only, sharply folded downwards, leaving only a narrow space between the undersides. The leaf is not twisted lengthwise.
host plants
Salicaceae, narrowly monophagous
Salix glauca, pentandra, phylicifolia.
Maybe also, perhaps occasionally, S. lapponum and myrtylloides.
synonyms
Phyllocolpa carinifrons (Benson, 1940); Phyllocolpa plicaglauca Kopelke, 2007; Phyllocolpa, Pontania, excavata auctorum.
larva
Third abdominal segment with 4 dorsal annulets, 1-3 with setae. Suranal plate with widely separated pseudocerci. Last two segments dorsally with black markings, head almost black, thoracic legs marked with black.
notes
On the top two picture it appears that locally the galls were very numerous. Derek Mayes told me that this was the case at least during the last four years. This perhaps explains why, contrary to what is stated in the literature, both sides of the leaf commonly are galled. As the lower of the two pictures demonstrates, the gall may appear as a sharp fold, but also as an inrolled leaf margin.
note
Member of the Euura oblita species group.
references
Beneš (2015a), Buhr (1965a), Dauphin & Aniotsbehere (1997a), Kopelke (1999a, 2007a,c), Liston (2006a), Liston, Heibo, Prous ao (2017a), Liston, Knight, Heibo, ao (2012a), Liston, Taeger & Blank (2006a), Mol (2013), Nyman, Zinovjev, Vikberg & Farrell (2006a), Redfern & Shirley (2011a), Roller, Beneš, Blank ao (2006a), Roskam (2009a), Vikberg (1970a).
Last modified 21.iv.2020
Salix pentandra, UK, Orkney @ Derek Mayes
many galls!
feeding traces
larva, dorsal
younger larva, lateral, to show the mottled feet
gall
leaf margin, generally at one side only, sharply folded downwards, leaving only a narrow space between the undersides. The leaf is not twisted lengthwise.
host plants
Salicaceae, narrowly monophagous
Salix glauca, pentandra, phylicifolia.
Maybe also, perhaps occasionally, S. lapponum and myrtylloides.
synonyms
Phyllocolpa carinifrons (Benson, 1940); Phyllocolpa plicaglauca Kopelke, 2007; Phyllocolpa, Pontania, excavata auctorum.
larva
Third abdominal segment with 4 dorsal annulets, 1-3 with setae. Suranal plate with widely separated pseudocerci. Last two segments dorsally with black markings, head almost black, thoracic legs marked with black.
notes
On the top two picture it appears that locally the galls were very numerous. Derek Mayes told me that this was the case at least during the last four years. This perhaps explains why, contrary to what is stated in the literature, both sides of the leaf commonly are galled. As the lower of the two pictures demonstrates, the gall may appear as a sharp fold, but also as an inrolled leaf margin.
note
Member of the Euura oblita species group.
references
Beneš (2015a), Buhr (1965a), Dauphin & Aniotsbehere (1997a), Kopelke (1999a, 2007a,c), Liston (2006a), Liston, Heibo, Prous ao (2017a), Liston, Knight, Heibo, ao (2012a), Liston, Taeger & Blank (2006a), Mol (2013), Nyman, Zinovjev, Vikberg & Farrell (2006a), Redfern & Shirley (2011a), Roller, Beneš, Blank ao (2006a), Roskam (2009a), Vikberg (1970a).