Contarinia coryli (Kaltenbach, 1859)

on Corylus

Contarinia coryli: galled catkins of Corylus avellana

Corylus avellana, Flevoland, Reve-Abbertbos © Hans Jonkman: the galled catkins are strongly swollen and the scales are enlarged.

Contarinia coryli: galling catkin of Corylus avellana: parasitised larva

the base of the scales is browned by the external digestion of the larvae

Contarinia coryli: larvae galling catkin of Corylus avellana

the larvae are gregarious

Corylus avellana: galled catkin of Corylus avellana

Corylus avellana, België, prov Namen, Nismes, RN les Abannets © Stéphane Claerebout

Corylus avellana: larva

larva, with the large anal papillae that are characteristic for Contarinia

Corylus avellana: larva about to jump

larva, about to jump

Contarinia coryli: galled catkin of Corylus avellana

Corylus avellana, België, prov. Namen, Yvoir, Tricointe © Jean-Yves Baugnée

Contarinia coryli: larva in its gall

larva

Contarinia coryli: larva in situ

Corylus avellana, Loenen (Ge) © Arnold Grosscurt: location of the larva in tha gall (arrow)

Contarinia coryli: larva

same larva, dissected out

Contarinia coryli: damage

the catkin scales are killed from the basis outwards

Contarinia coryli: damage

also the axis of the catkin is killed

gall

The larva is white, jumping; usually three or four in a catkin. Locally, the green catkin scales are turned brown of black at their base. Univoltine; full grown larvae hibernate in the soil.

hostplants

Betulaceae, monophagous

Corylus avellana.

synonyms

Contarinia corylina (Löw, 1878).

notes

Only by inspecting the catkins for the presence of larvae or mites this gall can be distinguished from the one of Phyllocoptruta coryli.

inquilines

Dasineura, Stictodiplosis, corylina.

references

Barnes (1951a), Béguinot (2002a,d,g, 2006a,c, 2007b), Bellido, Ros-Farré & Pujade-Villar (2003a), Bruun (2015a), Buhr (1964b), Chinery (2011a), Cilbircioğlu & Ünal (2009a), Cogolludo (1921a), Dauphin & Aniotsbehere (1997a), Flügel (2016a), Gagné (2010a), Hellrigl (2010a), Ilie & Marinescu (2011a), Lambinon, Carbonelle & Claerebout (2015a), Lehmann & Hannover (2016a), Nijveldt (1987a), Pellizzari (2010a), Redfern & Shirley (2011a), Roskam (2009a), Roskam & Carbonelle (2015a), Schneider (2016a), Simova-Tošić & Skuhravá (2001a), Simova-Tošić, Skuhravá & Skuhravý (1996a, 2000a, 2004a, 2007a), Simova-Tošić, Skuhravá, Skuhravý & Postolovski (2007a), Skuhravá (2006a), Skuhravá, Bayram, Çam ao (2005a), Skuhravá & Skuhravý (1988a, 1994a, 1997a, 1999a,b), Skuhravá, Skuhravý, Blasco-Zumeta & Pujade-Villar (2006a), Skuhravá, Skuhravý & Buhr (2013a), Skuhravá, Skuhravý, Dauphin & Coutin (2005a), Skuhravá, Skuhravý, Dončev & Dimitrova (1991a, 1992a), Skuhravá, Skuhravý & Jørgensen (2006a), Skuhravá, Skuhravý & Massa (2007a), Skuhravá, Skuhravý & Meyer (2014a), Skuhravá, Skuhravý & Neacsu (1972a), Skuhravá, Skuhravý, Skrzypczyńska & Szadziewski (2008a), Sylvén (1983a), Tomasi (2003a, 2014a), Unal & Akkuzu (2009a).

mod 29.ix.2017