Diplolepis nervosa (Curtis, 1838)

on Rosa

Diplolepis nervosa gall

Rosa sp., België, prov. Liège, Teril de Belle-Vue © Jean-Yves Baugnée

Diplolepis nervosa gall

Rosa canina, Belgium, prov. Liège, Ocquier; © Chris Snyers

Rosa sp., Rijckholt, Savelsbosch

Diplolepis nervosa gall

Rosa spec., Dronten; © Arnold Grosscurt

Diplolepis nervosa opened gall

opened gall

Diplolepis nervosa: gall on Rosa spec.

Rosa spec., Loenen (ge.) © Arnold Grosscurt: strangely aberrant gall

gall

This gall comes in two forms: with spines (and is unmistakable then) but also completely smooth (and then without breeding undistinguishable from Diplolepis eglanteriae). Univoltine; hibernation and pupation in the gall.

hostplants

Rosaceae, monophagous

Rosa canina, glauca, moyesii, rubiginosa.

synonyms

Diplolepis centifoliae (Hartig, 1840); dispar Niblett, 1943; kiefferi Loiselle, 1912; rosarum Giraud, 1859.

inquilines

Periclistus caninae.

notes

Hans Jonkman found in the Roggebotbos (province of Flevoland), next to the typical D. nervosa galls also numerous aberrant galls. They belonged to the D. eglanteriae type (without large spines) but differed in being covered with glandular hairs, that often were connected by low ridges. In older galls the glandular hairs had been transformed into low warts.

Diplolepis nervosa

Rosa spec., Dronten, Roggebotbos © Hans Jonkman: typical D. nervosa

Diplolepis nervosa + D. spec.

a typical nervosa and some unknown galls of the eglanteriae type.

Diplolepis ? eglanteriae

eglanteriae type

Diplolepis ? eglanteriae

eglanteriae type with low ridges

Diplolepis ? eglanteriae

here the ridges are more clearly expressed

Diplolepis ? eglanteriae

old (?) gall with low warts

Diplolepis nervosa: gall on Rosa spec.

the same unusual type of gall, in the same forest, but photo taken by another observer (© Arnold Grosscurt) and four years earlier (2013)

references

Bellmann (2012a), Buhr (1965a), Ceresa (2015a), Chinery (2011a), Dauphin & Aniotsbehere (1997a), Hellrigl (2009a), Hellrigl & Bodur (2015a), Koops (2013a), Kwast (2012a, 2014a), Lambinon, Carbonelle & Claerebout (2015a), Lambinon Schneider & Feitz (2012a), Lehmann & Hannover (2016a), Melika (2006a), Nieves-Aldrey (2001a), Nieves-Aldrey, Gómez, Hernández Nieves & Lobo (2006a), Redfern & Shirley (2011a), Roskam (2009a), Tomasi (2012a, 2014a).

pub 4.ii.2017 · mod 17.ix.2017