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).