Cacopsylla ulmi (Förster, 1848)
on Ulmus
Ulmus laevis, Hungary, Mosonmagyaróvár, 3.v.2016 © László Érsek
larvae on a fruitlet
larvae
larvae
larva
adults
gall
hypophyllous larvae produce much honeydew. Leaves wither and become disfigured.
host plants
Ulmaceae, monophagous
Ulmus glabra, laevis, minor.
In the summer the adults pass through a summer diapause (“parapause”); at that time they do not feed and may occur on different plants.
phenology
Univoltine; hibernation as egg.
references
den Bieman, Malenovský, Burckhardt & Heijerman (2019a), Burckhardt (1983a, 2002a), Conci, Rapisarda & Tamanini (1992a), Hansen (1996a), Hodkinson & White (1979a), Jerinić-Prodanović (2006a, 2010a), Lauterer (2011a), Malenovský, Baňař & Kment (2011a), Malenkovský & Lauterer (2012a), Ossiannilsson (1992a), Seljak (2006a, 2020a), White & Hodkinson (1982a).