Lixus cardui explained

Lixus cardui is a species of true weevil found in Europe^[1]

It was introduced in Australia to control scotch thistle Onopordum acanthium, an invasive weed.

Notes and References

1. Web site: Lixus cardui, a biological control agent for scotch thistle (Onopordum acanthium): Safe for Australia, but not the USA? . Joe Balciunas . 2007 . Biological Control 41 (2007) 134–141 . 2009-12-23 . https://web.archive.org/web/20110721071328/http://ddr.nal.usda.gov/bitstream/10113/8120/1/IND43899169.pdf . 2011-07-21 . dead .