Coleophora parthenica Meyrick, 1981

russian thistle stem borer

on Salsola

Coleophora parthenica: larva

larva, USA © Eric Coombs, Oregon Department of Agriculture, Bugwood.org

parasite

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.

hostplants

Amaranthaceae, monopgagous

Salsola tragus.

phenology

Several generations, depending on the season; the last generation hibernates as larva in the gallery, and pupates in the spring.

distribution within Europe

(PESI, 2018).

notes

Introduced into the United States for the biological control of russian thistle.

references

Baldizzone (1983c, 1985c, 1990b, 1995b, 1996a), Baldizzone & van der Wolf (2000a), Hawkes & Mayfield (0000a).

mod 4.ix.2018