Labiatae, Scrophulariaceae, Acanthaceae, and Proteaceae.
"More Letters of Charles Darwin" by Charles Darwin
The former usually feed on Asclepiadeae, the latter on Solanaceae or Scrophulariaceae.
"Darwinism (1889)" by Alfred Russel Wallace
Leaves toothed 6a, in =SCROPHULARIACEAE=, p. 102.
"The Plants of Michigan" by Henry Allan Gleason
Euphorbiaceae and Scrophulariaceae and Orchidaceae are universally present, the last in specially large proportions.
"Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 7" by Various