Salix pentandra, Drenthe, Ansen © Ad Mol; from Mol (2013a)

gall

swelling of a green twig, 2-3 cm long, consisting of c. four cells, each cell with a single larva; the bark of older galls is fissured. Often the gall causes the shoot to make a sharp bend. Pupation in the gall. Univoltine. Hibernation often in an extension of the gall, in the twig. The gall might be confused with the one of Hexomyza schineri; however, that one houses a maggot of a puparium.

host plants

Salicaceae, narrowly monophagous

Salix pentandra.

Buhr, and also other authors, mention many more Salix species and even some Populus, as host plants; this has turned out to be incorrect.

larva

Third abdominal segment with 3 dorsal annulets. Suranal plate without pseudocerci.

synonyms

Euura pentandrae Retzius, 1783; Cryptocampus populi (Hartig, 1837); C. medullarius (Hartig, 1837).

parasitoids, predators

? Mesopolobus aspilus.

note

Member of the Euura amerinae species group.

references

Askew, Blasco-Zumeta & Pujade-Villar (2001a), Bellmann (2012a), Buhr (1965a), Coulianos & Holmåsen (1991a), Dauphin & Aniotsbehere (1997a [“americanae”]), Houard (1908a), Kieffer (1891a), Kollár (2011a), Kopelke (1999a), Kopelke & Amendt (2002a), Liston (1982a), Liston, Heibo, Prous ao (2017a), Liston, Taeger & Blank (2006a), Mol (2013a), Pschorn-Walcher & Altenhofer (2000a, 2006a), Redfern & Shirley (2011a), Roller, Beneš, Blank ao (2006a), Roskam (2009a), Taeger, Altenhofer, Blank, ao (1998a), Tomasi (2014a).