Acaricalus trinotus (Nalepa, 1892)
on Alnus

Alnus glutinosa, Cadzand © Arnold Grosscurt

Alnus glutinosa, Dronten: underside of the leaf; © Arnold Grosscurt
hostplants
Betulaceae, monophagous
Alnus glutinosa, incana.
synonym
Acaphylla, Epitrimerus, trinotus.
notes
These symptoms can be caused by several species of gall midges that, possibly only facultatively, and maybe only in combination with others induce gall formation. See also Epitrimerus longitarsus, Tegonotus heptacanthus and T. trouessarti.
references
Buhr (1964b), Houard (1908a), Jočić & Petanović (2012a), Máca (2012a), Ripka (2007a), Roivainen (1951a, 1953a), Roskam (2009a), Skoracka, Lewandowski & Boczek (2005a), Tomasi (2014a), Vaněčková-Skuhravá (1996a).
Last modified 27.ii.2020