Colopha compressa (Koch, 1856)
elm cockscomb gall aphid
on Ulmus, primary host plant
Ulmus spec., France, dép. Maine-et-Loire, Maine, Angers, 23.v.2019 © Édouard Beslot: mass occurrence
galls
Ulmus glabra, Hungary, Halászi, 23.vi.2018 © László Érsek
detail
opened gall
apterae
aptera
aptera, ventral
Ulmus laevis, Belgium, prov. Limbourg, Kerkhoven, den Tip, arboretum, 6.vi.2019 © Carina Van Steenwinkel
detail
sometimes the gall gets a reddish colour
opened gall
Ulmus laevis, Belgium, prov. Namur, Houyet, bank of the Lesse © Jean-Yves Baugnée
the gall maker
host plants
Ulmaceae, narrowly monophagous
Ulmus laevis.
Less often on U. glabra, minor; in Spain exclusively on U. minor.
inquilines
Schütze (1935a) several times found in the galls the caterpillars of Phtheochroa schreibersiana.
on Carex, ? Eriophorum, secondary host plant
gall
aphids at the roots
host plants
Cyperaceae, monophagous
Probably also Eriophorum vaginatum.
references
Bellmann (2012a), Blackman & Eastop (2014), Blanes-Dalmau, Caballero-López & Pujade-Villar (2017a), Börner & Franz (1956a), Buga, Zhorov, Leshchinskaya & Stekolshchikov (2016a), Buhr (1965a), Burton, Carbonnelle, Ellis & Schneider (2019a), Burton, Ellis & Schneider (2022a), Cogolludo (1921a), Dauphin & Aniotsbehere (1997a), Deckert & Deckert (2016a), Heie (1972a, 1980a), Houard (1908a), Lambinon Schneider & Feitz (2012a), Máca (2012a), Nieto Nafría, Mier Durante, Binazzi & Pérez Hidalgo (2002a), Pérez Hidalgo & Umaran del Campo (2013a), Rakauskas & Trukšinaitė (2011a), Redfern & Shirley (2011a), Ripka, Reider & Szalay-Marzsó (1998a), Roskam (2009a). Schütze (1935a), Tomasi (2003a, 2014a), Wojciechowski, Depa, Halgoš ao (2016a).