Eriocampa umbratica (Klug, 1816)
on Alnus
parasite
Oviposition scars like in Eriocampa ovata; also rhe larvae are similar to that species, the woolly wax covering here is even more extreme.
host plants
Betulaceae, monophagous
Alnus glutinoosa, incana.
references
Beneš & Holuša (2015a), Buhr (1964a), Chevin (1984a), Haris (2012a), Hoop (1983a), Roskam (2019a), Taeger, Altenhofer, Blank, ao (1998a).