Coleophora parthenica Meyrick, 1981
russian thistle stem borer
larva, USA © Eric Coombs, Oregon Department of Agriculture, Bugwood.org
For a few days the larva lives as leafminer in a young leaf; next it becomes a stem borer, making a tunnel of about 15 cm. Pupation in the gallery.
Several generations, depending on the season; the last generation hibernates as larva in the gallery, and pupates in the spring.
distribution within Europe
Introduced into the United States for the biological control of russian thistle.
Baldizzone (1983c, 1985c, 1990b, 1995b, 1996a), Baldizzone & van der Wolf (2000a), Hawkes & Mayfield (0000a).