Cryptococcus fagisuga Lindinger, 1936
beech scale
on Fagus
gall
the suction activities of the coccids cause swellings of the bark that eventually may rupture, providing entrance to pathogenic fungi.
Fagus grandifolia, United States © Chris Malumphy, The Food and Environment Research Agency, Bugwood.org: the bark fissures are filled with coccids
females with their ovisac, covered by wax threads
nymphs
hostplants
Fagaceae, monophagous
Fagus sylvatica.
synonyms
Cryptococcus fagi (Bärensprung, 1849); Adelges, Chermes, fagi Kaltenbach, 1874.
references
Buhr (1964b), Ćwierzyk & Dziedzicka (1987a), Dziedzicka (1988a), Gertsson (2011a, 2016a), Hellrigl (2004a), Houard (1908a), Jansen (1999b, 2013a), Koteja & Żak-Ogaza (1966a), Kozár, Guignard, Bachmann ao (1994a), Malumphy (2010a), Roskam (2009a), Schmutterer & Hoffmann (2003a), Seljak (2010a), Żak-Ogaza & Koteja (1964a).