<i>Cheilosia grossa</i>

Agent: Cheilosia grossa Agent other names: Cheilosia corydon Hosts: Thistle, bull (Cirsium vulgare); Thistle Italian (Carduus pycnocephalus); Thistle, musk Carduus nutans); Thistle plumeless (Carduus acanthoides); Thistle, slenderflower (Carduus tenuiflorus)

<i>Psylliodes chalcomera</i>

Agent: Psylliodes chalcomera Host: Thistle, musk (Carduus nutans)

<i>Urophora cardui</i>

Agent: Urophora cardui Host: Thistle, Canada (Cirsium arvense)

<i>Terellia ruficauda</i>

Agent: Terellia ruficauda host: Thistle, Canada (Cirsium arvense)

<i>Lema cyanella</i>

Agent: Lema cyanella Host: Thistle, Canada (Cirsium arvense)

<i>Hadroplontus litura</i>

Agent: Hadroplontus litura Agent other names: Ceutorhynchus litura Host: Thistle, Canada (Cirsium arvense)

<i>Cassida rubiginosa</i>

Agent: Cassida rubiginosa Host: Thistle, Canada (Cirsium arvense)

<i>Altica carduorum</i>

Agent: Altica carduorum Host: Thistle, Canada (Cirsium arvense)

<i>Aceria anthocoptes</i>

Agent: Aceria anthocoptes Host: Thistle, Canada (Cirsium arvense)

<i>Urophora stylata</i>

Agent: Urophora stylata Host: Thistle, bull (Cirsium vulgare)