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.

Cryptococcus fagisuga

Fagus grandifolia, United States © Chris Malumphy, The Food and Environment Research Agency, Bugwood.org: the bark fissures are filled with coccids

Cryptococcus fagisuga

females with their ovisac, covered by wax threads

Cryptococcus fagisuga

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).

mod 6.iii.2020